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 1 Javanese Script Block Text Identification Using Characteritics ProcessingAgustinus Rudatyo Himamunanto and Emerita Setyowati Universitas Kristen Immanuel Jl. Solo Km. 11 Kalasan, Sleman 55571 Daerah Istimewa Yogyakarta Indonesia Phone: 62 (0274)496256 e-mail: rudatyo[at]ukrimuniversity.ac.id and emeritas[at]ukrimuniversity.ac.id Abstract In a document sheet there are generally two important information objects, namely text and images. Object text that is in a sheet of document is vital information because only in this area of text is the operation phase of transliteration is usually done. Considering that, the process stages of identification of text block are important things to do before the transliteration process. This paper presents a method for identifying Javanese script based on characteristics of Javanese script and the way of writing. Process of recognize the characteristics of Javanese script is done through the following process stages: preprocessing, segmentation and characteristic values. Result of this process will be the key of identification to distinguish between Javanese script and image object. Based on the input of book titled "Hamong Tani" known that the system have a success rate of 93.5%. The unidentified text area known to be manually is a stamp of the library and in a sloping position. Topic: Computer Science 2 Information Systems of Logistic Management: A Case StudyJohanes Fernandes Andry and Julia loisa Bunda Mulia University Jl. Lodan Raya No. 2 Ancol, Jakarta Utara 14430 Telp.: (021) 692-9090 - Fax: (021) 690-9712 - Call Center: (021) 690 9090 E-mail: jandry[at]bundamulia.ac.id, jloisa[at]bundamulia.ac.id Abstract Established in 2005, XYZ Cargo, a Freight Forwarder and a Service Company specialized in the logistic, located in Jakarta. Experience in both ocean freight and air freight service which more than sixty agents of partnership around the world. XYZ Cargo has implemented Information Systems (IS), IS make it possible for organizations to get the right information to the right people at the right time by enhancing the interaction between the organization’s people, the data collected in its various IT systems. This paper primarily deals with the role of Logistics in Jakarta. Framework of thinking used software development life cycle is a method by which the software can be developed in a systematic manner and which will increase the probability of completing the software project within the time deadline and maintaining the quality of the software product as per the standard. Topic: Computer Science 3 Study of Small Signal Stability Analysis When Large-Scale Wind Turbines Enter on Sulselrabar Interconnection SystemMustadir Darusman B (a*), Ansar Suyuti (b), Indar Chaerah Gunadin (b) a) Graduate Student of Electrical Engineering Department, Hasanuddin University Jl. Perintis Kemerdekaan KM. 10 Makassar, Sulawesi Selatan, 90245, Indonesia. *mustadir_darusman[at]gmail.com b) Lecturer at the Department of Electrical Engineering, Hasanuddin University Jl. Perintis Kemerdekaan KM. 10 Makassar, Sulawesi Selatan, 90245, Indonesia. Abstract This paper presents and explain the analysis of power flow and small-signal stability of the electrical system in South Sulawesi, East and West (Sulselrabar) islands located in Indonesia. The research focuses on the analysis of eigenvalues that will be used to investigate small-signal stability performance of the main electricity grid when the fault conditions with and without control equipment As well as the inclusion of wind turbines large scale on the system. Power Systems Analysis Toolbox (PSAT), which is integrated in MATLAB is used to develop a network topology in Sulselrabar. The study allowed us to determine the optimal location of the placement of Power System Stabilizer (PSS) to dampen the oscillation. The simulation results show the placement of pss on the generators two can add system stability and help the system to resume operation at the balance point. Time domain simulation methods are used to see the frequency response of the rotor speed. Topic: Computer Science 4 IMPLEMENTATION OF GUIDED DISCOVERY LEARNING STRATEGY ASSISTED BY GAME BASED MULTIMEDIA ON COMPUTER SYSTEM LEARNING TO INCREASE COGNITIVE ASPECT OF VOCATIONAL STUDENTSAnjar Rambari Apandi, Enjang Ali Nurdin, Eddy Prasetyo Nugroho Indonesian University Of Education Abstract This research is motivated from the problems that researchers encounter in the field that is still the low of students lesson on cognitive aspect in logic gate glitch in Computer System subject, hence from that needed a multimedia to help improve cognitive student in understanding material of Logic Gate in important eye of Computer System. This research is to know cognitive improvement with application. Techniques for learning improve cognitive abilities. Research methods that researchers use the Mix Mtehod Research where researchers between quantitative research with qualitative. This research used pre-experimental method. From the result of the research, the result of the students cognitive show improvement after giving interactive multimedia based on game with guided learning strategy, this can be seen from the average increase of each group of students, before using the multimedia students group of average 52.86%. The level of understanding of the material is very low but after using the multimedia it increased to 80.71% this can be seen from the student response to learn is very high because it can learn while play so the learning is not monotonous, but it can be added to the value gain 58, 5 which has the category being Medium. Topic: Computer Science 5 Design and Development of Learning Gamification on Discovery Learning Model to Increase Concept Comprehension on Basic Programming SubjectsRita Septianingsih (a*), Heri Sutarno (b), Dedi Rohendi (b) Indonesian University of Education Jalan Setiabudhi No. 229, Bandung, Indonesia *ritaseptianingsih.rs[at]gmail.com Abstract This study aims to produce learning gamification on discovery learning model and to measure how much influence its use to increase concept comprehension on basic programming subjects and also to know students response about learning gamification that built. The subject of the research are the students of X TKJ SMK Negeri Bandung. The reason why this learning gamification was build because the difficulty for applying the concept of comprehension on basic programming subjects and lack of utilization of media in learning process. Based on that problem, it is necessary for the media to assist students for learning basic programming by implementing the learning model in the media. One of the learning models that can be used is discovery learning. Discovery learning is a model where the learning is presented not only in the final form, but students also are encouraged to identify what they want to know and then they organize organize it in a final form. Multimedia development method used is comprehensive life cycle model (SHM). The results of this study are: 1) learning gamification on the discovery learning model on basic programming subjects that built eligible to be used based on the results of expert validation with the average acquisition of 91,9% from material experts and 81,7% from media experts and can be classified in the category of "very good", 2) learning gamification on the discovery learning model on basic programming subjects can improve concept comprehension, has been proven by the normalized gain value 0,37 which is categorized as gibing a medium influence on learning, and 3) students response to learning gamification is categorized good with the average gain of 69.5% Topic: Computer Science 6 Applying TOGAF For e-Government Implementation Based on Service Oriented Architecture Methodology Towards Good Government GovernanceAde Hodijah Politeknik Negeri Bandung Abstract As a Local Government Agencies (Satuan Kerja Perangkat Daerah / SKPD) who perform public services, Government Office (Dinas Pemerintahan) already has utilized Reporting Information System of Local Government Implementation (Sistem Informasi Laporan Penyelenggaraan Pemerintahan Daerah / E-LPPD). However, E-LPPD has upgrade limitation for the integration processes that cannot accommodate Government Offices’ needs in order to achieve Good Government Governance (GGG), while success stories of e-government implementation requires good governance practices in providing trusted public services. Currently, citizen demand public services as private sector do, which needs service innovation by utilizing the legacy system as a service based e-government implementation, while Service Oriented Architecture (SOA) as technical approach to redefine a business processes as a set of IT enabled services and Enterprise Architecture from the Open Group Architecture Framework (TOGAF) used to design of business architecture. This paper proposes a SOA embedded TOGAF as a comprehensive approach in redefining business processes as service innovation towards GGG. The results show that TOGAF will guide the development of integrated business processes of SOA with presented case study in e-government at Government Offices to prove the simplicity of the proposed model. Topic: Computer Science 7 MULTI CRITERIA EVALUATION FOR UNIVERSAL SOIL LOSS EQUATION BASED ON GEOGRAPHIC INFORMATION SYSTEMIskandar Muda Purwaamijaya Civil Engineering Department, Universitas Pendidikan Indonesia Abstract The purpose of research were (1) a conceptual, functional model designed and implementation for universal soil loss equation (usle), (2) standard operational procedure made for multi criteria evaluation of universal soil loss equation (usle) using geographic information system, (3) overlay land cover, slope, soil and rain fall layers to gain universal soil loss equation (usle) using multi criteria evaluation, (4) produced thematic map of universal soil loss equation (usle) in watershed, (5) produced attribute table of universal soil loss equation (usle) in watershed. Descriptive and formal correlation method are used for the research. Cikapundung Watershed, Bandung, West Java, Indonesia was study location. The research was conducted on January 2016 to May 2016. A spatial analysis is used to superimposed land cover, slope, soil and rain layers become universal soil loss equation (usle). Multi criteria evaluation for universal soil loss equation (usle) using geographic information system could be used for conservation program. Topic: Computer Science 8 3D Animation Model with Augmented Reality for Natural Science Learning in Elementary SchoolFivtatianti Hendajani(a*) , Abdul Hakim(a), Melani Dewi Lusita(b), Guntur Eka Saputra(c),Aditya Putera Ramadhana(c) STMIK JAKARTA STI&K (a)Computer Engineering, STMIK Jakarta STI&K *fivtatiantihendajani[at]gmail.com (b)Information Systems, STMIK Jakarta STI&K (c) Information Technology, Gunadarma University Abstract Many of the primary school students opinions on Natural Science are a difficult lesson. Many subjects are not easily understood by students, especially on materials that teach some theories about natural processes. Such as rain process, condensation and many other processes. The difficulty that students experience in understanding it is that students can not imagine the things that have been taught in the material. Although there is material to practice some theories but is actually quite limited. There is also a video or simulation material in the form of 2D animated images. Understanding concepts in natural science lessons are also poorly understood by students. Natural Science learning media uses 3-dimensional animation models (3D) with augmented reality technology, which offers some visualization of science lessons. This application was created to visualize a process in the subject matter of Natural Science. The hope of making this application is to improve students concept. This app is made to run on a personal computer that comes with a webcam with augmented reality. The app will display a 3D animation if the camera can recognize the marker. Topic: Computer Science 9 Sleep Stages Identification in Patients with Sleep Disorder Using K-Means ClusteringMuhammad Umar Fadhlullah, Algifari Resayahya, Dimas Fadli Nugraha, Intan Nurma Yulita Universitas Padjadjaran Abstract Data mining is a computational intelligence discipline where a large dataset processed using a certain method to look for patterns within the large dataset. This pattern then used for real time application or to develop some certain knowledge. This is a valuable tool to solve a complex problem, discover new knowledge, data analysis and decision making. To be able to get the pattern that lies inside the large dataset, Clustering method is used to get the pattern. Clustering is basically grouping data that looks similar so a certain pattern can be seen in the large data set. Clustering itself has several algorithms to group the data into the corresponding cluster. This research used data from patients who suffer sleep disorders and aims to help people in the medical world to reduce the time required to classify the sleep stages from a patient who suffers from sleep disorders. This study used K-Means algorithm and silhouette evaluation to find out that 3 clusters are the optimal cluster for this dataset which means can be divided to 3 sleep stages. Topic: Computer Science 10 Design Prototype Detection Tools of Porous Tree Using Microcontroller Arduino Uno R3 And Piezoelectric SensorHarun Sujadi, Ade Bastian, Tira Majalengka Univeristy Abstract Technology can be applied to the maintenance of trees that grow in Indonesia, one of the technologies that can be used to help facilitate the maintenance of trees is a technology created to detect the porous tree, where the tree is one of the largest sources of oxygen to mankind on earth. The reality in the urban area found many fallen trees and caused accidents and bear a lot of losses. Suara Merdeka media reported in 2016 there are 36 cases of accidents scattered throughout Indonesia due to fallen trees. No exception in the area of Majalengka Regency West Java Province which can also anytime accident or disaster caused by fallen trees, which in this Majalengka Regency for logging trees on the street and public places are not done regularly. Based on the problems above, it is necessary a tool that can detect a trees porous, to assist in sorting which tree should be felled and not felled by the party who has authority that is BMCK general maintenance. Previously made tools to detect porous trees imported from Hungary and Germany namely, Arbosonic3D and Sonic Tomography. This design uses piezoelectric sensors to detect how much pressure the fragile and fragile trees receive, of course the fragile and fragile strength of the tree will be different when exposed to the same pressure given that the fragile and fragile density of the tree is different, then the data Sent to Arduino Uno R3 to be processed into an information, which is expected to help minimize problems that occur. Topic: Computer Science 11 Performance Analysis of Extending Dijkstras Algorithm for Routing and Gateway Load Balancing on Mesh Topology using SDN ProtocolRahmad Syaifudin, Selo, Rudy Hartanto Department of Electrical Engineering and Information Technology, Faculty of Engineering, Gadjah Mada University Grafika Street no. 2 Yogyakarta 55281 Indonesia Abstract Software Defined Networking (SDN) technology is one of innovative technology on computer networking. With the implementation of the SDN protocol, network setup becomes easier because of the data plane centered on the control plane layer. The use of load balancer systems is expected to be used as an alternative to alleviate network performance, as network loads are handled by more than one server. Giving more than one gateway is required to anticipate in a case of process failure on another gateway. The use of inappropriate methods can degrade network performance, so an analysis of its performance is required. Extending Dijkstras (eDijkstras) is the development of the classical Dijkstra for the shortest path algorithm. The difference between eDijktra’s and classical Dijkstra’s is the calculation parameter based on the weights on the nodes and edges, so the path weights are calculated based on both. The use of eDijsktra in routing and load balancing systems on SDN-based mesh topologies are expected to be an alternative to improving network performance. In this research, performance analysis of eDijkstra’s algorithm is compared with classical Dijkstra and ECMP. Analysis and comparison are done to load server and QoS which include throughput, delay, response times and packet loss. From the load server comparison, eDijkstra’s algorithm performs more evenly distributed loads than with classical Dijkstra and ECMP, especially when network traffic is experiencing density. For comparison results, QoS eDijkstra has higher throughput value and smaller packet loss. The weakness of eDijkstra is response times and delay which is larger than ECMP. Topic: Computer Science 12 Enhancing Programming Logic Thinking Using Analogy MappingRosa Ariani Sukamto, Rani Megasari Universitas Pendidikan Indonesia Abstract Programming logic thinking is the most important capability in computer science major students. As known, programming is one of the hardest subjects in computer science program. This paper reports our work about enhancing students programming logic thinking using Analogy Mapping for basic programming subject. Analogy Mapping is a computer application which converts source code into analogies images. This research use time series evaluation and the result showed that Analogy Mapping can enhance students programming logic thinking. Topic: Computer Science 13 SIM Detection Tools Based on Raspberry Pi to Minimize Motorcycle TheftF A Triansyah, C Lestari, N D Ruswana, S Amilia, Z Mudhafar and E Junaeti Universitas Pendidikan Indonesia Abstract The number of motorcycles in Indonesia spurs the increased criminal acts of motorcycle theft. In addition, the number of motorcycles increases the number of traffic accidents caused by improper motorists. The purpose of this research is to create METEOR-based SIM Detector (METEOR) which is a design tool to detect the feasibility of SIM used to operate motorcycle and motorcycle security against theft. METEOR is made through the assembly, encoding, testing, and sequencing stages of the motorcycle. Based on the research that has been done, METEOR generated that can detect the SIM by using additional RFID chip and can be set on the motorcycle. Without the proper SIM, motorized chests coupled with METEOR cannot be turned on. So it can be concluded that motorcycles with additional METEOR able to be a safety device against theft and a tool to test the feasibility of motorcycle riders. Topic: Computer Science 14 Simulation of Consumer Queue at SupermarketA C Gumilar, F A F Muslim, H A M M, M D Septi, M A Aliza, R Rahmadian, R Winardi, and E Junaeti Universitas Indonesia Abstract The level of customer satisfaction of a supermarket not only can be seen from the completeness of the product provided or from the convenience when they shopping but the operational quality of a supermarket related to the queue at the checkout and speed of the cashier in doing the service became a matter of concern by consumers. In this paper presented a study of cashier queue a supermarket which is an aspect in the supermarket operational activities so that supermarket human resources can be utilized as possible by doing modeling and simulation. Topic: Computer Science 15 Learning Design Network Operating System Using Technology Content Knowledge Analysis to Improve Student Cognitive.Mailuz Zulfa Qonia, Wawan Setiawan, Harsa Wara mailuz.zulfa.qonia[at]student.upi.edu, wawans[at]upi.edu, harsawara[at]upi.edu Universitas Pendidikan Indonesia Abstract The content of Network Operating System lesson on the material scheduling process is generally presented by teachers using powerpoint in the form of theory in accordance with textbooks. In this research, the content material is presented by adding rationalization to each material that aims to improve the cognitive aspect of the learner. Content and technology which is developed multimedia learning based on Technology Content Knowledge analysis on the subjects of Network Operating System with the material content taken is the process scheduling. This study used quantitative approach with Quasi Experimental method and Non-Equivalent Control Group Design as the research design. The results obtained from the research that has been done show that there is an improvement in students understanding who use multimedia learning based Technology Content Knowledge analysis by looking at the comparison of the average value of control class gain of 0.26 and the experimental class of 0.54. In addition, Multimedia that has been developed got a positive response, both from students and from observers who in this study is a subject teacher of Network Operating System. Thus the learning process using multimedia-based Technology Content Knowledge analysis can be one of the alternatives in presenting a content material in order to improve students understanding. Topic: Computer Science 16 Implementation of Game Based Discovery Learning Methods to Improve Understanding In Computer System LearningGanjar Nurdiansyah, Wawan Setiawan Indonesia University of Education Abstract The research was motived by the low understanding of student on computer system subjects. Based on data from the field study, low understanding of student in learning computer system comes from various factors, such as the use of methods and instructional media and the difficulty of students in following the learning. To achieve students understanding of a material is not enough just to listen and see. Therefore, the solution in the form of Discovery Learning method is chosen because Discovery Learning helps students to understand the correct learning materials, because experiencing the process of finding it yourself. As a support so that students can be more active and motivated in Computer System learning activities, then implemented game-based Discovery Learning method. The study used quasi experiment research method with non-equivalent control group design. The students comprehension improvement data was obtained by using pretest and posttest questions. The result of this research is 1) doing the learning by applying 6 stages of game based Discovery Learning method; 2) obtained an increase in understanding based on the average value of students before and after given treatment using multimedia of 30.17 to 58.83 with a gain value of 0.41; 3) obtained the questionnaire data student responses that multimedia is rated very well with the percentage of assessment of 81%. Topic: Computer Science 17 Implementation of Multimedia Based Learning Adventure Game with Brain Based Learning Models to Increase The Cognitive Of Student Learning In Computer Network SubjectFitri Laeliya, Heri Sutarno, Eki Nugraha Universitas Pendidikan Indonesia Abstract The difficulty of understanding the concept of network is a major problem in teaching basic networking. Based on the results of preliminary studies conducted, 51% of students stated in part due to the limited media used in teaching and learning tend to be monotonous. The solutions such Brain Based Learning (BBL) methods was chosen because BBL is a learning model that is aligned with how the brain works naturally designed for learning and an emphasis on pleasure students will learn. This study develops a method BBL for later stages packed with elements of games. This study uses a pre-experimental design with one group pretest-post test. The research shows that this multimedia get the result "very good" with a percentage of 84.70%. Correlation between the results of the student questionnaire obtained by the students gain value is 0.46 which indicates that the relationship between these two values is high. Thus, multimedia-based learning adventure game with models of brain-based learning can be an alternative in presenting the material and have an impact on cognitive enhancement vocational students. Topic: Computer Science 18 development of cyberblog-based intelligent tutorial system to improve students learning ability algorithmWahyudin, Lala Septem Riza, Budi Laksono Putro UPI Abstract The use of computer media in learning provides benefits that are not owned by other learning media is the ability of computers to interact individually with students. But the weakness of many learning media is to assume that all students have a uniform ability, when in reality this is not the case. The concept of Intelligent Tutorial System (ITS) combined with cyberblog application can overcome the weaknesses that have not paid attention to the diversity. A Cyberblog application-based Intelligent Tutorial System (ITS) is a web-based interactive application program that applies artificial intelligence that can be used as a learning and evaluation medium in the learning process. The use of Cyberblog based ITS- in learning is one of the alternative learning media that is interesting and able to assist students in measuring ability in understanding the material. In this research will be associated with the improvement of logical thinking ability (logical thinking) of students especially in algorithm subjects. Topic: Computer Science 19 THE APPLICATION OF MULTIMEDIA USING PROBLEM POSING METHOD TO INCREASE the STUDENTS’ ACHIEVEMENT IN BASIC NETWORKING SUBJECT IN VOCATIONAL high SCHOOLQori Halimatul Hidayah, S.Pd ,Dr. Dedi Rohendi, MT, Yaya Wihardi, M.Kom University Indonesia of Education Universitan Pendidikan Indonesia (UPI) Abstract Abstract. THE APPLICATION OF MULTIMEDIA USING PROBLEM POSING METHOD TO INCREASE the STUDENTS’ ACHIEVEMENT IN BASIC NETWORKING SUBJECT IN VOCATIONAL high SCHOOL. The purpose of this study is to apply multimedia using problem posing method in learning basic networking subject to increase the students’ achievement in vocational high school. The research method in this study used analysis, design, development, implementation and assessment. The data analyze was using curriculum, material, user and interview to the teacher of basic networking subject. The instrument of this research was using questionnaire. The result showed that using problem posing method in learning basic networking subject is effective. In material aspect the mean is 81%, in media aspect the mean is 70%, and in the students’ respond the mean is 91%. Besides, in experimental class the significant of score is 0, 24, and in control class is 0.09. In other words, using multimedia of problem posing in learning basic networking subject in vocational high school is good. Topic: Computer Science 20 Vizualization Auditory Kinestethic (VAK) Learning Model with Adventure Game Approach to Improve the Cognitive Ability of SMK Students on Subjects Basic networkSifa Sajaatun Nisa, Munir, Rizky Rachman J.P Universitas Pendidikan Indonesia Abstract this research examines the student about the difficulty in understanding the lessons of the basic network. The difficulty is evident from the low cognitive aspects of students. The goal of the research is to find out how to apply the model of learning Visualization Auditory Kinesthetic (VAK) with adventure gaming approaches on subjects the Basic Network, research to find out the influence of multimedia learning towards the understanding of the students. The research method used is a quantitative method using quasi experiment design research. Results from research that has been conducted that multimedia developed by media expert assessment get categories very good material and experts with a good category. In addition an assessment of the students reside on the requirements very well. Subsequently an increase in students cognitive aspects of it can be seen from the difference in the value of the gains obtained in the control and experimental classes, control classes are in the category of being. While the experimental classes are on a high category. Topic: Computer Science 21 THE APPLICATION OF EDUCATIONAL MULTIMEDIA WITH ADVENTURE GAME BASED USING ARCS MODEL FOR VOCATIONAL STUDENT’S UNDERSTANDING IN BASIC NETWORKING LESSONMunir, Jajang Kusnendar, Dhita Putri Maretha UPI Abstract Abstract. This study examines students difficulties in understanding basic networking lessons, it is reflected in the low student learning outcomes. Factors causing the problem are the lack of enthusiasm of students in learning, teacher-centered learning and students easily bored in learning. The purpose of this research is to know the process of designing and building the learning-based multimedia adventure game using ARCS model (Attention, Relevance, Confidence, Satisfaction), to know the influence of educational multimedia to students understanding and responses after using multimedia. The research method used is quasi experimental with nonequivalent control group design, for method of multimedia development of researcher using SHM model. The results showed that the developed multimedia get the assessment with very good category. Multimedia also get response assessment of students with very good category. And obtained an increased understanding of the classroom that uses this multimedia. Topic: Computer Science 22 3D Virtual Environment of Beautiful Indonesia Miniature Park in a WebBheta Agus Wardijono (a*), Ire Puspa Wardhani (b), Yudi Irawan Chandra (b) and Bhakti Utama Ganda Pamungkas (c) a) Departement of Computer Engineering, STMIK Jakarta STI&K, Jln Radio Dalam 17 Jakarta Selatan, 12140, Indonesia *bhetaagus[at]gmail.com b) Departement of Information System, STMIK Jakarta STI&K, Jln Radio Dalam 17 Jakarta Selatan, 12140, Indonesia c) Student of Information Technology, Gunadarma University, Jl Margonda Raya 100, Depok, 16424, Indonesia Abstract Beautiful Indonesia Miniature Park (Taman Mini Indonesia Indah known as TMII) is a largest recreational park based on culture in Indonesia. This park has 250 acres that consist of traditional/culture houses from Indonesian provinces. TMII attempted not only to reconstruct the culture houses of the various provinces of Indonesia, but also to create a realistic model of Indonesian people environment. To provide information about TMII to the general public, in this research it has been created and developed models of 3D graphics from TMII and the surrounding environment, especially the culture houses that represented Indonesia provinces. Virtual Reality technology was used to display the visualization of the TMII and the surrounding environment in 3D graphics technology. By implementing the current technology, it has been successful to display 3D objects via the internet browser. This research used Blender, Unity3D and WebGL technology to make virtual reality models that can be showed on a Website. The result of this research is 3D Website of TMII and its virtual objects surrounding the environment that can be displayed through the Web browser. The website consists of virtual environment scenes from TMII and user can walk-through and navigates inside the scenes. Topic: Computer Science 23 IMPLEMENTATION OF FLIPPED CLASSROOM OF NETWORK DESIGN ASSISTED INTERACTIVE MULTIMEDIA TO IMPROVE COGNITIVE OF VOCATIONAL HIGH SCHOOL STUDENTSTiara Dwi Asmara, Eka Fitrajaya, Novi Sofia Fitrasari Universitas Pendidikan Indonesia Abstract Some research using model flipped classroom provide enough influence on students in terms of understanding and the results of the study, however, in the learning process is still undergoing a shortage i.e. students less enthusiastic toward what is presented at the time of teaching and learning activities taking place. This research aims to develop interactive multedia in which there are several phases of the model flipped classroom as learning tools on subjects of Network Architecture. The methods used to use the quantitative approach to the design of studies one group pretest-posttest. This research was carried out in SMK N 2 Bandung. To see the influence of cognitive enhancement then used the test instrument in the form of pretest and posttest to see the feasibility of adapting the questionnaire the unambiguous multimedia based Learning Object Review Instrument (LORI) against the media expert, expert content, as well as students as participants. From the results of this research note that: this multimedia valuation get in the category of very good and worthy to be used based on the validation of test validation and media expert expert material also in the category as well as students as multimedia user response response very well to multimedia. Topic: Computer Science 24 DESIGN AND IMPLEMENTATION OF INSTRUCTIONAL MEDIA WITH INQUIRY FOR DEAF STUDENTSDheana Susana Firdaus, Lala Septem Riza, Enjun Junaeti Universitas Pendidikan Indonesia Abstract Everyone in principle has the right to education, including children with special needs deaf. They have the difficulties in the development of cognitive abilities, language, learning, and reading as well as understanding the contents of the reading. Therefore, this study is intended to design the concept of learning media for children with special needs deaf and implement it into interactive multimedia with inquiry. In designing the media consider 24 characteristics of children for multimedia obtained based on literature studies. To achieve the goal, the waterfall method is used as a reference in the development of learning media. The experiment was conducted in SLB Negeri Beringin Purwakarta with the subject of research as many as 5 students of grade IV. Then, the results of the experiment are processed and analyzed based on qualitative methods. The results show that gains value, students perceptions of the media, the feelings of students at the time and after using the media, as well as the average duration of focus students in using the media is very good. Learning media that have built proven to give a positive impact for children with special needs deaf but, there are important things to do during implementing the media that is the guidance and direction at all stages of learning. Topic: Computer Science 25 Basic Programming Learning Design with Analytical Of Technological Pedagogical Content Knowledge To Improve CognitiveMutiara Maulina Kemal (1), Harsa Wara Prabawa (2), Herbert Siregar (3) Computer Science Education Department Faculty of Maths and Science Education, Indonesia University of Education Jl. Dr. Setiabudhi 229, Bandung 40154, Indonesia 1 Mutiara.maulina.kemal[at]student.upi.edu 2 Harsawara[at]upi.edu 3 Herbert[at]upi.edu Abstract A document which was released by Asian Development Banks revealed that some weaknesses in vocational school is caused by teacher, it consists of quality of teaching and teachers’skill of teaching. Quality of teaching by teacher can be represented by students’ achievement. There is framework for teacher and prospective teacher called TPACK, it can be used to improve quality and skills for teaching. This research aimed to improve students’ cognitive with Basic Programming learning design based on TPACK analytical for students in grade 10th of SMKN 2 Bandung academic year of 2017/2018. The subject in this research is students of TKI in SMKN 2 Bandung. This research used 27 TKI students in grade 10th as subject. Quantitative approach was applied in this research. The procedures of this research are problem identification, literature study, TPACK analytical, development, validation, experimentation, data analyze and interpretation, documentation and report. The datas were obtained from documentation, questionnaire, and observation. Based on data analysis’ result, the average value of Gain for students from upper group is 0,58, middle group is 0,22, and undergroup is 0,38, so, it can be concluded that the result from this research is with Basic Programming learning design applied to TKI students in grade 10th of SMKN 2 Bandung could improve cognitive’s ability and students’ response for learning multimedia which obtainded TPACK aspect got positive response. Topic: Computer Science 26 Location Campus Orientation Based on Android Games (Case Study Faculty of Technology and Vocational Education, Indonesia University of Education)Aji Sutrisna (a*), Yudi Wibisono (b), Rosa Ariani S. (b) Universitas Pendidikan Indonesia Abstract Location orientation is an activity that aims to introduce a location. This study aims to assist location orientation activities with the application of gamification using elements of location based game. Gamification done by making the material orientation as game material so as to make the orientation process becomes more fun and provide new experiences in conducting orientation of location. Software development process using waterfall method, while testing is performed by the user directly and generate response in the form of responses categorized by rating scale method. The result of data analysis of user response category 1 to the application resulted in an assessment of 84%, while the response of user category 2 on the application resulted in an assessment of 83%. So the game application that is made is included in the category of very good and able to assist in the conduct of the location orientation.. Topic: Computer Science 27 UPNAV: LOCATION BASED AUGMENTED REALITY TOUR AND NAVIGATION APPIndraga Martiyana Duha, Yaya Wihardi, Asep Wahyudin Department of Computer Science Education Universitas Pendidikan Indonesia Bandung, Indonesia Abstract This research is motivated by problems that often occur when looking for a place in an unknown location. Such problems can also be found in wide university campuses such as the Universitas Pendidikan Indonesia (UPI). Augmented Reality (AR) is a technology that can attach virtual objects into the real world. One of the advantages of AR is its intuitive and attractive interface, so its good to be used for navigation purposes. Therefore, the author get an idea to try to develop a tour and navigation apps with location based Augmented Reality (AR). With features such as (1) the navigation feature, where the user can select the destination to which the application will display the direction that must be passed by the user in order to reach the place. (2) tour, which gives users information about the places around the user in accordance with the user location, and the last is (3) a gallery feature that displays the photos from the place around the user. The application is then tested with 4 levels of testing i.e. unit testing, integration testing, system testing and user acceptance testing. The results of this study are (1) the researcher successfully built the tour and navigation application with the location-based AR UPNAV using GPS tracking system, accelerometer and magnetometer, (2) UPNAV application has 80.5 or "Good" usability score after measured with System Usability Scale (SUS). Topic: Computer Science 28 ENCRYPTION AND DESCRIPTION FILE TEXT.TXT USING PSEUDO INVERS ALGORITHM AND C ++ PROGRAMMINGakik hidayat(a), Rudi rosadi (b), Asep Sholahuddin (c) a) Department of Computer Engineering, Faculty of Mathematic and science, Padjadaran University, Bandung, Indonesia Email: akik[at]unpad.ac.id b)Department of Computer Engineering, Faculty of Mathematic and science, Padjadaran University, Bandung, Indonesia Email: rudirosadi[at]gmail.com c)1) Department of Computer Engineering, Faculty of Mathematic and science, Padjadaran University, Bandung, Indonesia Email: asol[at]unpad.ac.id Abstract Abstract. Pseudo inverse is one of the cryptographic algorithms that utilize the matrix as the key to encrypt and description and arithmetic modulo. Each character on plaintext or chipertext is converted into numeric form. Encryption is done by multiplying the key matrix with the plaintext matrix, while the description is done by multiplying the inverse of the key matrix with the chipertext matrix. Pseudo inverse can only use square matrix as its key matrix, in this paper it will be shown that Pseudo inverse can use rectangular matrix with row order size larger than column, so the key matrix used is not limited to square matrix only. The use of a rectangular matrix makes the chipertext longer than plaintext. This makes the message more obscure. In this research, modulo 95 is used. To simplify calculation at the time of initialization of key matrix, encryption process and description process, the author makes application program using C ++. Topic: Computer Science 29 APPLICATION OF STAD LEARNING METHOD (STUDENT TEAMS-ACHIEVEMENT DIVISIONS) WITH INTERACTIVE MULTIMEDIA BASED ANIMATION TO IMPROVE CIVNITIVE ABILITY STUDENTS SMK CLASS XEliyen Putri (a*), Wawan Setiawan (b), Eki Nugraha (b) Indonesian education university Abstract Abstract— Problems often experienced when learning the operating system especially on the material scheduling process is the lack of supporting media such as interactive multimedia so that learning becomes unattractive and less spur the enthusiasm of students, while the subjects of the operating system is a subject that requires a high level of understanding, because the eye This lesson can not be learned and understood if learning is limited to theory alone and students need to explore the subject independently and more actively. To study the material requires a proper learning model. Appropriate learning model is STAD learning model (Student Teams-Achievement Divisions). Therefore, this study aims to: 1) develop multimedia-based animation with STAD learning model (Student Teams-Acheivement Divisions) to improve students cognitive abilities; 2) measure the improvement of students ability after the application of multimedia; 3) analyze student response to multimedia learning. Comprehensive life cycle method used in this research consist of analysis phase, design phase, development stage, implementation phase, and assessment phase. Multimedia is tested in one of Vocational High School in Bandung. The results of the research are: 1) multimedia learning successfully developed and declared feasible by media experts and material experts respectively by 78% and 88.33%; 2) the application of multimedia learning can improve students cognitive ability with a gain index of 0.48 Which are included in the "moderate" category; 3) Student responses to learning multimedia get "excellent" results with an average of 81%. Keywords— Interactive multimedia, animation, STAD (Student Teams-Acheivement Divisions) model, cognitive ability Topic: Computer Science 30 Modified Minimax Algorithm with Alpha Beta pruning on Turn Based Game PrototypeArief Perdiansyah, Yudi Wibisono, Rosa Ariani S. Universitas Pendidikan Indonesia Abstract Minimax algorithm is one algorithm that is often applied in turn-type game or commonly called turn based game. But the problem arises when the Minimax algorithm is used in complex games. The use of Minimax algorithms in complex games will make the solution search time longer. Therefore, Alpha Beta pruning becomes one of the solutions to reduce search time on solution search. To see the difference of the time searching solution between Minimax algorithm with Minimax algorithm Aplha Beta pruning a turn based game prototype is made. The test results using the game prototype made a finding that Alpha Beta pruning able to cut search time as much as 90 percent faster than the Minimax algorithm without pruning. This happens because nodes that are not a solution are already pruned by Alpha Beta pruning method. As for one way to cut more nodes on the algorithm Minimax Alpha Beta pruning process required good tree creation, so the Minimax Alpha Beta pruning algorithm can be faster by pruning the parts of the tree that has been prepared or sorted. Topic: Computer Science 31 Part of Speech Features for Sentiment Classification based on Latent Dirichlet AllocationEka Surya Usop; R. Rizal Isnanto; Retno Kusumaningrum Universitas Diponegoro Abstract The input data used in the sentiment analysis process by using machine learning generally is Bag of Word (BoW). However, the input data using BoW is not enough to improve the machine learning in defining the polarity on a document. Therefore, need input in the form of more specific feature so that it is capable to give the more maximal result. Part of Speech (POS) is one of the techniques to create the more specific feature on a document. By using the POS-based feature on a document, then the occurrence of the word class like adjective or negation can be detected. The adjective and negation are the main sign of the sentiment or opinion on a document. This study is aimed to use POS technique to conduct feature selection. The result of the POS-based feature process will be the input for sentiment analysis process by using Latent Dirichlet Allocation (LDA) method. The result of this research showed that the document which has passed the POS-based feature process can give accuracy score higher with the difference about 7.8% than the document without feature selection process of POS. Topic: Computer Science 32 Identification Of Personality Based On Myers-Briggs Type Indicator Model (MBTI) Using Decision Tree Based Video GamesRasim, Rosa Ariani Sukamto, Mohamad Firmansyah Setiawan Indonesian University of Education Abstract Every human who lives in this world has a different personality from the others. To know the personality must have a test to get results about the personality of yourself. The MBTI Method (Myers-Briggs Type Indicator) is one of the methods to know personally by giving test questions and the results of the test will give 1 personality of 16 personalities in MBTI. Video games are a game played on the screen using a computer. Video games are popular with many people, almost all people love video games. RPG (Role-Playing Games) is one of the genres of video games that solve video games by means of players given the characters that the player wants. The research will create a video games genre RPG that can know the personality of someone using MBTI method. To know the personality of the MBTI method is given a problem with this video game, test method of MBTI is somewhat much question therefore it is necessary implementation of decision tree with C4.5 method to get MBTI problem more effective and efficient which will be seen accuracy from result of research which was made with the results of the MBTI tests that had previously been done. Topic: Computer Science 33 COMPUTER SYSTEM LEARNING DESIGN BASED ON TECHNOLOGI PEDAGOGICAL AND CONTENT KNOWLEDGE ANALYSIS IN SMKIntan Permatasari, Harsa Wara P., Herbert Siregar UNIVERSITAS PENDIDIKAN INDONESIA Abstract The problems of the world of education are still found in various aspects such as problems of media usage, methods, models and processes of implementation in the implementation of education. The solution in the TPaCK framework with the improved model is chosen because it can facilitate the learning process. Using the TPaCK framework and improving teacher learning model can make the learning process effective so that the material presented can be accepted by the students easily and clearly. By using interactive multimedia tools the teacher can present the material more interestingly. Development of interactive multimedia using adobe flash application is chosen because it can present the material with interactive so that students not only watch, but can operate their own multimedia. The research method used is PreExperimental with one group pretest-posttest design. The average value of gain index obtained by students in the upper classes of 0.75%, in the middle class of 0.72% and in the lower class of 0.61%. From the average value of the gain index there is a significant difference indicates that there is an increase in understanding of students after using the interactive multimedia learning with model improve. Topic: Computer Science 34 The Implementation of Mamdani Fuzzy Logic Inference Method to Diagnosis Experts System Base on the Symptoms of 8 Dental and Oral DiseasesGivantri Zukma, Eddy Prasetyo Nugroho, Novi Sofia Fitriasari Ilmu Komputer Abstract Dental an oral health is often to be not priority for some people. In fact, as the first organ in the human digenstive system, teeth and mouth is the gate to entrance of germs and bacterial, it can interfere the health of the other organs inside the body. The percentage of population who has the dental and oral health problems incresed from 23,2% to 25,9% and the amount of the dentist in indonesia is 23,262 people, when compared to the total of population in Indonesia, the dentist rasio is about 45 dentist for 100.000 population. The best way to solve that problems in helping people to identify dental and oral disease is creating an expert system. So, this expert system can help people to diagnose dental and oral disease early before visiting the dentist. This experts system using Mamdani Fuzzy Logic inference method, it use general symptoms of 8 dental and oral disease as an input. This expert system features “a normal” or “positif” suspicion of dental and oral disease as the result of the diagnosis. From 40 expert’s analysis data, it shows that 92,5% of the data is accurate. It proves that the application of the dental and oral diagnostic expert by using Mamdani Fuzzy logic inference method works properly. Topic: Computer Science 35 Forecasting Car Sales Using Weighted Moving AverageTia Yulistiani Muis, Drs. Heri Sutarno, M.T., Eddy Prasetyo Nugroho, M.T. Indonesian University Of Education Abstract GAIKINDO car sales in the next period can be known by using sales forecasting. The method used is the Weighted Moving Average method to determine the amount of good forecasting on car sales, because the method can make forecasting without being affected by the data pattern. From the results of the discussion and the research that has been done by using the value of period length n is 4, the result of forecasting error using Weighted Moving Average method with MAPE error value is at least 13% for Affordable Energy Saving Cars 4 x 2 category, while for 4 x 4 and 4 x 2 have MAPE errors of 15% and 26% respectively. With the value of the error, the use of Weighted Moving Average method is good enough to be used for forecasting car sales at GAIKINDO organization. Topic: Computer Science 36 ANALYSIS OF STUDENT SATISFACTION ON REQUIREMENT SPECIFICATION INFORMATION SYSTEM USING KANO METHOD (A Case Study in Departemen Pendidikan Ilmu Komputer Fakultas Pendidikan Matematika Dan Ilmu Pengetahuan Alam Universitas Pendidikan Indonesia)Herbert (a), Budi Laksono Putro (b), Heni Mulyani (c) (a,b,c) Program Studi Ilmu Komputer, Departemen Pendidikan Ilmu Komputer, Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam, Universitas Pendidikan Indonesia Jl. Dr. Setiabudhi No. 229 Bandung 40154 Jawa Barat - Indonesia Abstract The University of Education Indonesia is one of the universities that currently have used information systems to support administrative activities and educational processes that take place. This study aims to analyze the success of information systems by measuring how much the level of user satisfaction of Information Systems applied at the University of Education Indonesia. In this study the researchers made observations on some information systems to see what specification requirements exist in the information system of the University of Education Indonesia. Then the requirement is incorporated into the questionnaire to be assessed by users of information systems. The result of the users assessment of the information system specification requirement is 93.75% of the requirements contained in SINO including into the One-dimensional and 6.25% categorized indifferent. In “Sistem Perwalian” 92.3% categorized One-dimensional and 7.7% indifferent categorized. In SPOT as much as 88.9% One-dimensional categorized and 11.1% Must-be categorized. While in “Sistem Evaluasi PBM” as much as 50% One-dimensional categorized and 50% indifferent categorized. Topic: Computer Science 37 Application of Ahp-Topsis Method on Monitoring and Evaluation Data of Local Government Department Work Plan for Determining Performance RateErwin Ginanjar Wijanarko, Novi Sofia Fitriasari, Wahyudin Program Studi Ilmu Komputer Departemen Pendidikan Ilmu Komputer Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam Universitas Pendidikan Indonesia Abstract In the case of planning, monitoring and evaluation is important to be used as a reference in order to improve quality and prevent the occurrence of repeated mistakes. Development Planning Agency conducts monitoring and evaluation on the results of local government department work plan. Monitoring and evaluation need to be developed in order to conduct in-depth analysis of the implementation of activities especially on the level of importance of activities. Therefore, So that required monitoring and evaluation system which also pay attention to importance of activity which one of its output is rank performance of local government work unit. Therefore, the researchers present a combination of AHP and TOPSIS as a method of assessment as well as determination of local government work unit performance ratings. AHP is used in determining the priority vectors of each assessment criteria, and TOPSIS is used to rank local government work unit performance according to the value obtained based on monitoring and evaluation data. Topic: Computer Science 38 THE BUILDING BLOCKS OF LEARNING MULTIMEDIA BASED GAMIFIKATION DIRECT INSTRUCTION ON MATERIALS ADDRESSING PROTOCOL TO ENHANCE THE UNDERSTANDING OF VOCATIONAL HIGH SCHOOL STUDENTSShofa Maryana*, Dedi Rohendi, Heri Sutarno Indonesian University of Education Jalan Setiabudhi No. 229, Bandung, Indonesia *shofamaryana[at]live.com Abstract In the process of learning that occurs at this time are still found many teachers who use conventional, not optimal media used as a learning tool, so students are less encouraged to use and develop the capacity to think. And to support good learning process, teachers need to establish some principles in the learning process, one of which is the use of Information and Communication Technology (ICT) to improve the efficiency and effectiveness of learning. But the reality in Indonesia although we enter the global world, problems still ranks lowest ICT in the learning process needs. The purpose of this research is to design learning multimedia wake gamification Direct Instruction based on the material and knowing Protocol Addressing students responses to multimedia built. This study uses the development of the Multimedia Development Life Cycle (MDLC). Multimedia has been built and then tested on 32 students SMKN 13 Bandung Department of Computer Engineering Network is divided into groups: upper, middle group and a lower group. The results of this study show that: 1) There is a growing understanding of students ability in the top group, middle group, or a lower group after using gamification learning multimedia based direct instruction. On the pretest, the average value obtained on the group is 35.83, 39.29 middle group, and a lower group is 30. Meanwhile, the average value of the top group posttest obtained are 81.67, 82.62 middle groups, and a lower group 79. 2) Multimedia gamification of learning is also getting a positive response from the acquisition respondendengan percentage of 79 826% are included in good categories. Topic: Computer Science 39 Education-Based Augmented Reality Applications For Heat Learning Media Content Lesson In PhysicsGina Rahayu a), Andri Suryadi b), and Ali Ismail c) STKIP Garut Abstract This study aims to create applications that can be used as a medium of physics learning with sub-material heat. Application-shaped learning media created using Augmented Reality-based technology Android. The application created is named Mecalor. Mecalor application process using the Waterfall method. This Waterfall method provides a sequential approach to software lifecycle.Testing the feasibility of the application is done through four characteristics of the ISO 25010 standard which Suitability Functional, Performance Efficiency, Portability, and Usability. The test was conducted in Garut - Indonesia Vocational High School with a total of 30 students and two software experts. Data analysis techniques use a Likert scale and Guttman scale. The test results on the characteristics of Functional Suitability applications, Performance Efficiency, and Portability is valid with a percentage of 100% so it can be said that the application is good to use. Likewise, characteristics Usability test results also suggested a value of 3.9 so that applications can Mecalor declared fit for use. Topic: Computer Science 40 Recommendation System for Watch with Collaborative Filtering MethodRidho Saputra (a*), Rasim (b), Asep Wahyudin (b) Computer Science Departement Faculty of Mathematics and Science Indonesia University of Education Bandung, Indonesia Abstract Lapau Jam Bandung is a store that is engaged in sales of watches, One of the problems that usually arise when customers visit will be faced with several products of choice of existing products. Before visiting the place first the customer has a choice of a product he is looking for. But there are also customers who visit without any purpose of the product they are looking for. For customers who have no choice may find it difficult with the existence of some existing product products. In this research, research on watch product recommendation system with collaborative filtering method using Euclidean distance algorithm as similarity calculation, with research title "Recommendation System for Watch with Collaborative Filtering Method". This study uses the product data of watches that are available in the shop Lapau Jam Bandung. To determine the error rate of forecasting, calculated using Means Absolute Error (MAE). The result of forecast error by using collaborative filtering method with Euclidean distance algorithm on sparsity 30% resulted in MAE value of 0.8911, the result is quite bad compared to other research results using cosine similarity (Sarwar, 2001). Topic: Computer Science 41 Hybrid Cryptosystem Implementation Using Fast Data Encipherment Algorithm (FEAL) and Goldwasser-Micali Algorithm for File SecurityDian Rachmawati, Mohammad Andri Budiman, and Winda S E Siburian Universitas Sumatera Utara Abstract On the process of exchanging files, security is indispensable to avoid the theft of data. Cryptography is one of the sciences used to secure the data by way of encoding. Fast Data Encipherment Algorithm (FEAL) is a block cipher symmetric cryptographic algorithms. Therefore, the file which wants to protect is encrypted and decrypted using the algorithm FEAL. To optimize the security of the data, session key that is utilized in the algorithm FEAL encoded with the Goldwasser-Micali algorithm, which is an asymmetric cryptographic algorithm and using probabilistic concept. In the encryption process, the key was converted into binary form. The selection of values of x that randomly causes the results of the cipher key is different for each binary value. The concept of symmetry and asymmetry algorithm merger called Hybrid Cryptosystem. The use of the algorithm FEAL and Goldwasser-Micali can restore the message to its original form and the algorithm FEAL time required for encryption and decryption is directly proportional to the length of the message. However, on Goldwasser-Micali algorithm, the length of the message is not directly proportional to the time of encryption and decryption. Topic: Computer Science 42 Calculation of Photonic Bandgap For 2D Hexagonal and Square Structure Base on Hybrid Polymer MaterialSahrul Hidayat, Nowo Riveli Department of Physics, Faculty of Mathematics and Natural Science, University of Padjadjaran Abstract We have calculated 2D photonic crystal band gap using plane-wave expansion method. The studied model of structures is hexagonal lattice and square lattice of rod cylinder in air. We have simulated the dispersion relation of it structure using hybrid polymer as rod material. The parameters structure are nrod =1.5, nhole =1, and rrod =0.25a, where a is lattice constant. We found the distributed feedback occurs at the edge of upper band or frequency at 0.66 (a/lamda). In our experimental work, we have successfully fabricated the 2D photonic crystal from hybrid polymer incorporated with organic laser-dye. The lasing characteristics ware investigated using strip-line excitation light of SHG Nd-YAG laser (lamda;=532 nm). The lasing wavelengths for hexagonal structure are observed at 606 nm and 621 nm for photonic crystal period of 400 nm and 410 nm, respectively. Whereas the square structure, the lasing wavelengths are observed at (588 nm ± 2) and (606 nm ± 2 nm) for photonic crystal period of 391 nm and 405 nm. Topic: Computer Science 43 Implementation of Weighted Product-TOPSIS Method to Determining the Priority Scale of Aactivity Groups at the Development Planning MeetingFaisal Denis Febriansyah Ilmu Komputer Universitas Pendidikan Indonesia Abstract Development planning is an effort to overcome various problems that occur in the general public. Community participation is needed as input to create development planning (participatory approach). Participatory approaches are implemented by gathering peoples aspirations through the Musrenbang Forum at the city level. This Musrenbang result is the main input in preparing the Local Government Work Plan (RKPD). Not all community aspirations are used as proposed activities in development planning. Only priority activities can be entered. This study uses Weighted Product (WP) and TOPSIS. Based on the research, it is concluded that the combination of WP and TOPSIS method has a higher level of complexity that is 4 compared to each WP and TOPSIS methods that have a level of complexity 3. The accuracy of each method is as follows: 1. TOPSIS 100%; 2. WP 100%; And 3. The combination of both methods is 83%. Topic: Computer Science 44 An Architecture of Multimedia Analytical Service for Smart Classroom SystemWawan Setiawan, Yaya Wihardi Department of Computer Science Education, Universitas Pendidikan Indonesia Abstract This research aimed to design an architecture of multimedia analytical service for a smart classroom through audio-visual system. The proposed system is capable of sensing classroom environmental so that can improve the awareness of teacher to the student during a class. We held study literature in smart classroom system what and how its work. Based on data and information collection the current condition, we design a new smart classroom system that aware to the students condition. The result is a classroom setup and a technology architecture. The proposed architecture is adaptive, maintainable, and support multimedia big data analysis in the future. Topic: Computer Science 45 Live Chat Alternative Security ProtocolRizky Rahman J.P., Eki Nugraha, Anggita Febriany Computer Science Study Program Department of Computer Science Education Faculty of Mathematics and Natural Sciences Education Indonesia University of Education Abstract Indonesia is one of the largest e-commerce markets in Southeast Asia, as many as 5 million people do transactions in e-commerce, therefore more and more people use live chat service to communicate with customer service. In live chat, the customer service often asks customers’ data such as, full name, address, e-mail, transaction id, which aims to verify the purchase of the product. One of the risks that will happen is sniffing which will lead to the theft of confidential information that will cause huge losses to the customer. The anticipation that will be done is build an alternative security protocol for user interaction in live chat by using a cryptographic algorithm that is useful for protecting confidential messages. Live chat requires confidentiality and data integration with encryption and hash functions. The algorithm used is Rijndael 256 bits, RSA, and SHA256. To increase the complexity, the Rijndael algorithm will be modified in the S-box and ShiftRow sections based on the shannon principle rule, the results show that all passes in the Randomness test, but the modification in Shiftrow indicates a better avalanche effect. Therefore the message will be difficult to steal or change. Topic: Computer Science 46 Improving Students’ Conceptions on Fluid Dynamics through Peer Teaching Model with PDEODE (PTM-PDEODE)A Samsudin1, N J Fratiwi1, N Amin1, Wiendartun1, Supriyatman2, F C Wibowo3, M N Faizin4, and B Costu5 1 Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 2 Prodi Pendidikan Fisika, Universitas Tadulako, Palu, Indonesia 3 Jurusan Pendidikan Fisika, Universitas Sultan Ageng Tirtayasa, Serang, Indonesia 4 Guru IPA, SMPN 2 Kudus, Indonesia 5 Department of Science Education, Yildiz Technical University, Istanbul, Turkey Abstract This study based on an importance of improving students’ conceptions and reduces students’ misconceptions on fluid dynamics concepts. Consequently, should be done the study through combining Peer Teaching Model (PTM) and PDEODE (Prediction, Discuss, Explain, Observe, Discuss and Explain) learning strategy (PTM-PDEODE). For the research methods, we used the 4D model (Defining, Designing, Developing, and Disseminating). The samples are 38 students (their ages were an average of 17 years-old) at one of the senior high schools in Bandung. The improvement of students’ conceptions was diagnosed through a four-tier test of fluid dynamics. At the disseminating phase, students’ conceptions of fluid dynamics concepts are increase after the use of PTM-PDEODE. In conclusion, the development of PTM-PDEODE is respectable enough to improve students’ conceptions on dinamics fluid. Topic: Mathematics, Science, and Computer Science Education 47 The Use of Virtual Analogy Simulation (VAS) In Physics LearningM. Noor Faizin1, A. Samsudin2 1. Junior High School 2 Kudus (SMP 2 Kudus) Jl. Jend. Sudirman No. 82 Kudus Central Java 59311, Indonesia 2. Universitas Pendidikan Indonesia, Departemen Pendidikan Fisika. Jl. Setiabudhi No. 229, Isola, Sukasari, Kota Bandung, Jawa Barat, 40154, Indonesia. Abstract The purpose of this research is to explore the use of VAS software in electrical dynamic learning in junior high student, so as to obtain an overview of this software consistency in help students build a scientific conception. This research was administered via research and Development (R & D) with the design of embedded experimental models. The respondents which were involved in this research were 60 students of ninth grade in one of junior high schools in Kudus central java. The improving process of students’ concept is examined based on normalized gain analysis from pretest and posttest scores. The result of this research shows that there was difference between learning using conventional learning (power point software) with VAS software. VAS is more effective to assist students in understanding the electrical dynamic concept shown with N-gain of 0.36, or 36 % were included in the medium category, whereas the conventional learning with N-gain of 0.28, or 28%. Topic: Mathematics, Science, and Computer Science Education 48 Spectrum Symbol and Structure Sense mathematicsDrs. Dedi Kuntadi, M.Pd and Hamdan Sugilar, M.Pd. UIN Sunan Gunung Djati Bandung Abstract This study attempts to analyse the sense of mathematical symbols and structure in terms of the students’ ability in completing algebra or mathematical problems which require structure and symbol expression. The students could be difficult to solve the problems due to two critical issues: 1) the students have a low sense of mathematical symbol and structure; 2) the didactic design explained the teacher is less related to the students’ intake categories of symbol and structure sense. Intuitive abilities of symbolic expressions, including skills to interpret, manipulate and understand the symbols of different roles, are the key in learning algebra (Aljupri & R. Sispiyati, 2016: 1). The study used the qualitative method to collect its data. This method explains a natural phenomenon or symptoms that are natural and upfront candid. The study was conducted to a class of 7th-grade students, which was randomly selected from the whole population of the 7th-grade students in Islamic Junior High Schools. These 7th-grade students were chosen because the transition from the number sense to the symbol and structure sense occurs in this grade. Topic: Mathematics, Science, and Computer Science Education 49 Problem Based Learning to Foster Self-Directed Learning Student on Math Learning in Elementary SchoolRistiana Master of Teaching Elementary School Teachers University of Lampung, Sumantri Brojonegoro Street No. 01 Gedong Meneng Bandar Lampung Email: ristiana1710[at]unila.ac.id Abstract Problem-based learning is an instructional approach that has been used for over 30 years and continues to gain acceptance in a variety of disciplines. One is the use of problem based learning on learning Math in elementary school. Problem-based learning is a teaching method that aims to prepare students for real-world settings. By requiring students to solve problems, problem based learning can improve student learning outcomes by promoting their abilities and skills in applying knowledge, solve problems, practice high-level thinking, and self-directed learning.This literature study done by finding and organizing library resources related to the problems examined. The purpose of this literature study is to understand the role of problem based learning in foster self-directed students on Math in Elementary School. Topic: Mathematics, Science, and Computer Science Education 50 Analysis Creative Mathematical Thinking Ability by Using Model Eliciting Activities (MEAs)Winda Ayuningtyas Universitas Pendidikan Indonesia Abstract One purpose of learning mathematics to obtain creative mathematical thinking ability so that students are not focus to answer just only one solution of mathematical problem. Lack of creative mathematical thinking ability can lead to not accustomed with open ended problem. Students’ creative mathematical thinking ability in the first grade at one of junior high school in Tangerang City not fully develop. The reason students’ creative mathematical thinking ability is not optimally developed is so related with learning process which has done by the mathematics teacher, maybe the learning design that teacher use is unsuitable for increasing students activity in the learning process. This research objective is to see the differences in students’ ways of answering the problems in terms of students’ creative mathematical thinking ability during the implementation of Model Eliciting Activities (MEAs). This research use posttest experimental class design. The indicators for creative mathematical thinking ability in this research arranged in three parts, as follow: (1) Fluency to answer the problems; (2) Flexibility to solve the problems; (3) Originality of answers. The result of this research found that by using the same learning model and same instrument from Model Eliciting Activities (MEAs) there are some differences in the way students answer the problems and Model Eliciting Activities (MEAs) can be one of approach used to increase students’ creative mathematical thinking ability. Topic: Mathematics, Science, and Computer Science Education 51 Effect of Model Group Investigation and Model Group Investigation with Assessment for Learning (AfL) to Math Learning OutcomesN Sobarningsih (a), T K Rachmawati (a*) a) Prodi Pendidikan Matematika, Fakultas Tarbiyah dan Keguruan, UIN Sunan Gunung Djati Bandung Jl. A.H Nasution No 105, Bandung 40614, Indonesia *tikakarlinarachmawati[at]uinsgd.ac.id Abstract The purpose of this study was to find out which results in learning outcomes better in math between the model of Group Investigation, Group Investigation model with Assessment for Learning (AfL), or direct learning model in the subject of Kapita Selekta Matematika SD. Research methodology in this research was quasi experimental research.Population in this research was all students of Mathematics Education of Faculty of Tarbiyah and Teacher of UIN Sunan Gunung Djati Bandung Academic Year 2016/2017.While the samples of this study were students of Mathematics Education in first semester consisting of 3 classes with total respondents 117 students. The data collection used the test method in the form of multiple choices of 20 items.Prerequisite test included normality test population using method of Lilliefors and homogeneity of the population variance using Bartlett method. With α = 0.05, it can be concluded that the sample was from a normally distributed population and has the same variance.Analysis of data using one way analysis of variance with different cells, followed by a multiple comparison test using Scheffe method. Based on the results, it can be concluded that the model group investigation with the AfL resultsmathematics learningbetter than the model group investigation, a model group investigation with the AfL yield better mathematics learning than direct instructional model, and the model group investigation yield mathematics learningbetter than the direct learning model. Topic: Mathematics, Science, and Computer Science Education 52 Simple induced magnetic field and Lorentz Force Law demonstration experimentsDwi Nanto(a*), Novita Sri Wullan(a), and Diah Mulhayatiah(b) a) Dept. of Physics Education, Syarif Hidayatullah State Islamic University, Jakarta 15412, Indonesia *dwi.nanto[at]uinjkt.ac.id b) Dept. of Physics Education, Sunan Gunung Djati State Islamic University, Bandung 40612, Indonesia Abstract Induced magnetic field and Lorentz Force Law, one among problems, that is hard to be understood by senior high school students. Unlike mechanical topics, either kinematics or rotational motion, which are simple to be observed, the induced magnetic field and Lorentz Force Law are abstract concepts. In many advanced countries, senior high students learn the magnetic field induction and Lorentz Force Law concepts supported by good laboratory practical experiments. However, in Indonesia, physics practical laboratories are difficult to be learned by students. Thus, in this report, we introduce simple practical laboratory experiments for learning the topics mentioned above. The equipment is simple, cheap to build, easy to operate, portable design and common commercial batteries used for the home appliance. We found that the equipment has improved students’ achievement. In detail, based on Bloom’s taxonomy our equipment enhanced students’ achievement cognitive aspect from C2 (understanding) up to C5 (evaluating). Detail explanation is presented in this report. Topic: Mathematics, Science, and Computer Science Education 53 The influence of project base learning on the student conception about kinematics and critical thinking skillsJ. handhika, C. Cari, A. Suparmi, W. Sunarno Univeristas PGRI Madiun Universitas Sebelas Maret Surakarta Abstract This research revealed the influence of Project Base Learning (PjBL) to increasing the level of the conception. The research method used the pre-experimental design with one group pre-test post-test. PjBL applied to students of physics education program of IKIP PGRI Madiun (23 Students). The test used to determine the level of conception is multiple choice tests and index of certainty. Activities on PjBL described. Obtained that the PjBL model can increase the level of conception and Critical thinking skills with the average normalized gain 0.49 and 0.57 (medium category). Topic: Mathematics, Science, and Computer Science Education 54 EFFECT OPEN-ENDED APPROACH CAPABILITIES CREATIVE THINKING OF MATHEMATIC PRIMARY SCHOOL TEACHER EDUCATION STUDENTSTaufiqulloh Dahlan, Moh.Nurhadi and Siti Maryam Rohimah Primary School Teacher Education, Pasundan University Jl.Tamansari No 6-8, Bandung Abstract This study aims to examine whether the ability of mathematical creative thinking between students using the Open-ended approach is better than students who use conventional learning and how students respond using open-ended approach. This research is Quasi Experimental research because in this research the subject is not randomly grouped, but the researcher accept the subject condition as it is, with the design of Nonequivalent Postest Only Control Group Design. The population of this study is all students of primary school teacher education study program from one of the universities located in West Java with a sample consisting of 2 classes. The first class is an experimental class that obtains learning mathematics using the Open-ended approach and the second class is a control class that obtains conventional learning. Data collection uses posttest creative mathematical thinking ability as well as questionnaire. Data analysis was performed on the posttest score between the two sample groups using t-test to determine the difference of mathematical creative ability. The questionnaire is used to find out how the student responds when using the Open-ended approach. Topic: Mathematics, Science, and Computer Science Education 55 Analysis of Pedagogical Content Knowledge (PCK) Ability of Science Teachers in Planning and Reflecting on Environmental Pollution ContentWidi Purwianingsih*, Ainul Mardiyah Universitas Pendidikan Indonesia (UPI) Abstract Abstract. Pedagogical Content Knowledge (PCK) is a blend of content knowledge and pedagogy knowledge, which can illustrate the ability of teachers to design and to teach a content by accessing what they knows about the material, students, curriculum and how best to teach the content. Description of PCK ability of science teachers can be accessed through an analysis of their ability to plan and reflect on learning. This study aims to provide an overview of teachers PCK skills on environmental pollution materials through use of Content Representation (CoRe) and Pedagogical and Professional-experience Repertoires (PaP-eRs). Descriptive method used in this study with six of science teachers on VIIth class from three different schools as subject. The results show that teachers PCK skills in planning through CoRe and reflecting through PaP-eRs are in fairly good category. The teachers ability in implementing environmental pollution learning materials is in good category. However, there is still a discrepancy between planning through CoRe and the implementation of classroom learning. The teachers PCK is influenced by teaching experience and educational background. Topic: Mathematics, Science, and Computer Science Education 56 The Influence of the Integrated Mathematic Learning with the Assistance of Music Toward Mathematic Reasoning for Fifth Grader of Satya Wacana Elementary School SalatigaRiska Zulia Anggraeni, Kriswandani Mathematic Education Program, Faculty of Education Universitas Kristen Satya Wacana, Jl. Diponegoro 52-60, Salatiga Abstract The aim of this research is to figure out whether is there any influence of the integrated mathematic with the assistance of music toward mathematic reasoning for fifth grade students of Satya Wacana Elementary School. This research is quasi experiment with nonequivalent control group design, with also fifth grade of Satya Wacana Elementary School as the population. The sample collection method used is saturation sampling and 26 students of from VA as an experiment class and 26 students of VB as a control class are obtained. The data collection method is using documentation and essay test. The statistic test used is Mann-Whitney Non-Parametic Test. Based on the test result, significant score about mathematic reasoning is obtained which is 0,048 < 0,05. The average score for calss VA is 61,20 and class VB is 47,86. This could be concluded that integrated mathematic with the assistance of music influence mathematic reasoning ability of fifth grade students of Satya Wacana Elementary School Salatiga. Topic: Mathematics, Science, and Computer Science Education 57 Identification Some Epistemological Obstacles Experienced By Indonesian Students in Answering Mathematics PISA’s Test Content Uncertainty and DataH Rahman, D Suryadi, and R Rosjanuardi Universitas Pendidikan Indonesia Abstract The purpose of this research is trying to identify epistemological obstacles which were experienced by Indonesian students in answering PISA test for mathematics literacy content uncertainty and data. Epistemological obstacles was identified by giving a test to the respondent, students grade 7th and 8th who have studied data representation in the class. Respondents’ work analysed by qualitative method. The result showed that respondents have epistemological obstacles in reading the data, reading between the data, and reading beyond the data. To gain further understanding, some respondents were chose to be interviewed. Topic: Mathematics, Science, and Computer Science Education 58 Science Teacher’s Idea about Environmental Concepts in Science Learning as the First Step of Science Teacher TrainingMarisa Christina Tapilouw1,a)2, Harry Firman1, Sri Redjeki1 and Didi Teguh Chandra1 1 Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia 2 Yayasan Salib Suci, Jl Van Deventer No. 18, Bandung 40112, Indonesia a)E-mail: marisatapilouw[at]student.upi.edu Abstract Science teacher have an important role in science learning, especially in Junior High School. Ideal science teacher should master subject matter in every concept (including environmental concepts) in order to give the best lesson in science class. To refresh natural environmental concepts in science, science teacher have to attend a teacher training. In teacher training, all participant can have a good sharing and discussion with other science teacher. This study is the first step of science teacher training program held by education foundation in Bandung and attended by 20 science teacher from 18 Junior High School. The major aim of this study is gathering science teacher’s idea of environmental concepts. The core of questions used in this study are basic competencies linked with environmental concepts, environmental concepts that difficult to explain, the action to overcome difficulties and references in teaching environmental concepts. There are four major findings in this study. First finding, most environmental concepts are taught in 7th grade. Second finding, most difficult environmental concepts are found in 7th grade. Third finding, there are five actions to overcome difficulties. Fourth finding, science teacher use at least four references in mastering environmental concepts. After all, teacher training can be a solution to reduce difficulties in teaching environmental concepts. Topic: Mathematics, Science, and Computer Science Education 59 Profile of High School Students’ Creative Thinking Skill on Physics SubjectIsmi Umi Hanni*, Muslim, Lilik Hasanah Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia *ismiumihanni[at]student.upi.edu Abstract The purpose of this study is to know whether Physics teacher has provided creative thinking skills in learning activities, and also to know how the students creative thinking skills profile in general and each aspect. The research design used was a single holistic case study. Participants in this study were 27 students of class X in one of the SMA Negeri in Bandung. The instruments used are interview sheets and test questions of creative thinking skills. The results showed that teachers had trained creative thinking skills, but very minimal. And, the profile of students creative thinking skill that was still low both in general and for every aspect. Topic: Mathematics, Science, and Computer Science Education 60 Application of Expert-Notice Dialogue (END) Method to Assess Students’ Science Communication Ability on BiologySiti Sriyati*, Dessy Nur Amelia, Gina Tri Soniyana Departemen Pendidikan Biologi FPMIPA Universitas Pendidikan Indonesia (UPI), Jl. Dr. Setiabudi no 229, Bandung 40154, Indonesia Abstract *Corresponding author: siti_sriyati@yahoo.com or sriyati@upi.edu Abstract: The students science communication ability are one of the fundamental issues in the curriculum of many countries including the 2013 curriculum in Indonesia. Students science communication ability can be assessed by the Expert-Notice Dialogue (END) method. END focuses on verbal explanations using graphs or images as a tool. This study aims to apply the END method to assess students science communication ability. The research method used is descriptive. The study was conducted in two high schools in Bandung with each sample of one class at each school (A and B). From a number of students in the class selected students who act as an expert (information giver) and as a notice (recipient of information). The number of experts in class A is 8 students and in class B 7 students, while the number of notice in class A 32 students and in class B 31 students. The material chosen for explanation by ekspert is Ecosystem in class A and plant classification in class B. Research instrument are rubric of science communication ability, observation rubric, concept test for notice and questionnaire for notice. Implementation of the study recorded with a video camera and then transcribed based on rubric science communication ability. The results showed that the average of science communication ability in class A and B was 60% and 61.8%, respectively and including the medium category. Mastery of the notice concept is in good category with 79.2 averages in class A and 94.6 in class B. Through the questionnaire notice it is known that the END method generally helps notice in understanding the concept. Topic: Mathematics, Science, and Computer Science Education 61 Analysis Of Students’ Incorrect Answers At Triangle Materials In The Fifth-Grade Of Primary SchoolE Shintawati and Al Jupri Universitas Pendidikan Indonesia Prodi Pendidikan Dasar Abstract This research aims to analyse the comparison of the predictionsmade by the author between learning methods with the reality that occur in the classand to analyse students responses toward questionsgiven by teachersattriangle materials. The method used in this researchis the descriptive-qualitative method. The subjectsof this research are all fifth-grade students from a primary school in the city of Bandung. The results of this research indicated that there are some influences between learning methodsand students responses shown by the way students answer the question. In reality, there are many students’ responses produced beyond the predictions of the author. It shows thatas the good teachers, besides setting up learning methods,they should also make predictions toward the responses of the students in answering the questions given. Theresults of the predictions could be used as a lesson for teachers torunthe learning processes as good as possible so the students responses could bein accordance with the concept of materials presented and couldalso achieve the expected learning goals. Based on this research’s results, as a teacher must have techniques and strategies to overcome things that are not expected during the learning so that learning can be conducive so that students can focus on learning and enjoy learning so that learning outcomes is the ability of students to increase in understanding the material and can construct the concept of material provided. Topic: Mathematics, Science, and Computer Science Education 62 THE ROLE OF ENVIRONMENTAL LIVING EDUCATION BASED ON LOCAL WISDOM TO STUDENTS ENVIRONMENTAL CARING ATTITUDE IN JUNIOR HIGH SCHOLLIka Nurani Dewi, Muslimin Ibrahim, Sri Poedjiastoeti IKIP Mataram Abstract The purpose of this research is determining the role of local wisdom-based education on students environmental caring attitude. The populations in this study were all students of SMPN 2 Gunung Sari and SMPN 2 Lingsar. The method of data collection is done by technique 1) the interview to the students of SMP class VII to know the participation of the students to the environment, 2) the observation sheet to get a direct description of the students, environmental caring attitude character during the learning activity, and 3) the questionnaire to measure students attitude to the environment. How to measure attitude used likert scale. The method of analysis used in this research is quantitative descriptive method. The findings in the field show that overall the character of students caring attitude in the good category (≥70%). This is because environmental education based on local wisdom can provide comprehension and knowledge comprehensively for students to study various environmental problems. The students attitude toward environmental preservation is in the category of less (≤ 50%). This is due to the students knowledge about what and how the surrounding environmental problems are still limited. In addition, the cause of students rarely even never does energy saving because students have not understood the importance of energy savings to maintain environmental sustainability. The right solution for the problem is that students are given knowledge about environmental preservation. The study recommends a broader implementation of environmental education, where learning activities begin with local issues of environmental issues in daily life. Schools as part of the learning environment need to cultivate students environmental caring attitude with habituation, exemplary, and joint movements that shape school behaviors and cultures that align with ecological intelligence. Topic: Mathematics, Science, and Computer Science Education 63 Case Study : Analysis of Scientific Reasoning Skills of High School Students in the Context of PhysicsM Mustika, J Maknun, L Hasanah Physics Education Study Program, Graduate School of the University of Indonesia Education, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract The research that has been conducted was aimed to investigate the scientific reasoning skills of high school students in the context of Physics. The method used in this research was the case study method and descriptive analysis with the provision of a valid scientific reasoning skills test instruments. The research subjects consisted of 33 Senior High School students of class XII Science in Bandung. The research instrument used are 14 questions of the scientific reasoning skill test and student questionnaires. The results show that students scientific reasoning abilities in the physical context are generally still in the low category. The highest aspect obtained in the category of rudimentary, basic and culminating, while the lowest aspect is in the intermediate category and control of variables. Thus, the appropriate solutions are needed to improve the learning outcomes by teaching the students about scientific reasoning skills. Topic: Mathematics, Science, and Computer Science Education 64 The effectiveness of research-based physics learning module with predict-observe-explain strategies to improve the students competenceUsmeldi Universitas Negeri Padang Abstract The preliminary study shows that many students are difficult to master the concept of physics. There are still many students who have not mastery learning physics. Teachers and students still use textbooks. Students rarely do experiments in the laboratory. One model of learning that can improve students competence is a research-based learning with Predict-Observe-Explain (POE) strategies. To implement this learning, research-based physics learning modules with POE strategy are used. The research aims to find out the effectiveness of implementation of research-based physics learning modules with POE strategy to improving the students’ competence. The research used a quasi-experimental with pretest-posttest group control design. Data were collected using observation sheets, achievement test, skill assessment sheets, questionnaires of attitude and student responses to learning implementation. The results of research indicate that research-based physics learning modules with POE strategy is effective to improving the students’ competence, in the case of (1) mastery learning of physics has been achieved by majority of students, (2) average the improving of students competence include high category, (3) the students competency of the experiment class is higher than the control class, (4) the majority of students stated that research-based physics learning module with POE strategy can be implemented. Suggestions to physics teachers to apply research-based learning modules with POE strategies. Topic: Mathematics, Science, and Computer Science Education 65 Analysis of Physics Problem Solving Ability of High School Students on Temperature and Heat MaterialDewi Yulianawati, Muslim dan Lilik Hasanah Universitas Pendidikan Indonesia Abstract Problem solving ability must be owned by high school students after studying the concepts of physics so that the concepts of physics that have been studied can be meaningful. Based on this, the need for research to describe the problem solving ability of high school physics students. This research was conducted for four hours of physics subject to 37 students of 11th grade in one of State Senior High School of Bandung. The method used is case study with research design using single case design is embedded. The instrument used to measure problem solving abilities consists of three essays. The average value of the test is 8.27 out of the maximum total value of 36. The results show it is still very far from what is expected. This also happens to any problem solving indicator. One of the contributing factors is physics learning process which is still teacher centered. Based on the results of these case studies, the teachers or researchers can create learning situations that can build students to have better problem solving ability. Topic: Mathematics, Science, and Computer Science Education 66 Physics education students’ cognitive and affective domains toward ecological phenomenaN D Napitupulu1,a), A Munandar2, S Redjeki3, and B Tjasyono4 1Program Studi Pendidikan Fisika, Universitas Tadulako, Jl. Soekarno Hatta Km. 9, Palu 94118, Indonesia 1,2,3,4 Sekolah Pascasarjana, Program Studi Pendidikan Ilmu Pengetahuan Alam, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia a)E-mail: nurdewi66[at]yahoo.com Abstract Abstract. Environmental education is become prominent in dealing with natural phenomena that occur nowadays. Studying environmental physics will lead students to have conceptual understanding which are importent in enhancing attitudes toward ecological phenomena that link directry to cognitive and affective domains. This research focused on the the relationship of cognitive and affective domains toward ecological phenomena. Thirty-seven Physics Education students participated in this study and validated sources of data were collected to eksplore students’ conceptual understanding as cognitive domain and to investigate students’ attitudes as affective domain. The percentage of cognitive outcome and affective outcome are explore. The features of such approaches to environmental learning are discussion through analysis of contribution of cognitive to develop the attitude ecological as affective outcome. The result shows that cognitive domains do not contribute significantly to affective domain toward ecological phenomena as an issue trend in Central Sulawesi although students had passed Environmental Physics instruction for two semester. In fact, inferior knowledge in a way actually contributes to the attitude domain caused by the prior knowledge that students have as ombo as a Kaili local wisdom. Topic: Mathematics, Science, and Computer Science Education 67 The Influence of Application of Twister in Team Games Tournament Learning Model on Student’s Conceptual Understanding at Senior High SchoolPapien Aprisda Universitas Pendidikan Indonesia papienaprisda[at]student.upi.edu Abstract This research aims to elucidate whether there is a significant difference between student’s conceptual understanding who learn to use the application of Twister in Team Games Tournament learning model with students who use conventional learning. The research method used was Quasi Experiment and design used is a Non Equivalen Pretest-Posttest Control Group Design. The population in this research is the whole grade X IPA in SMA Muhammadiyah 1 Pekanbaru at year 2014/2015. The sample of this research is X IPA 2 class as experimental class and X IPA 3 class as a control class. The collection of data in this study done with documentation, observation and tests. The results showed that the application of Twister in Team Games Tournament learning model gives influence on the student’s conceptual understanding in SMA Muhammadiyah 1 Pekanbaru. Topic: Mathematics, Science, and Computer Science Education 68 DEVELOPMENT AND VALIDATION OF CLIMATE CHANGE SYSTEM THINKING INSTRUMENT (CCSTI) FOR MEASURING SYSTEM THINKING ON CLIMATE CHANGE CONTENTMeilinda (1,2; Nuryani Rustaman(1; Harry Firman (1; Bayong Tjasyono (3 1) Universitas Pendidikan Indonesia 2) Universitas Sriwijaya 3) Institut Teknologi Bandung Abstract ABSTRACT The Climate Change System Thinking Instrument (CCSTI) is developed to measure a system thinking ability in the concept of climate change. CCSTI is developed in four phases development including need assessment, instrument draft development, validation and evaluation including readable material test, expert validation, and field test. The result of the field test is analyzed by looking at the readability score in Cronbach’s alpha test. The draft instrument is tested on college students majoring in Biology Education, Physics Education, and Chemistry Education randomly with a total number of 80 college students. A score of Content Validation Index at 0.86, which means that the questions developed are categorized as very appropriate with question indicators and Cronbach’s alpha about 0.605 which mean categorized undesirable to minimal acceptable. From 45 questions of system thinking, there are 37 valid questions spread in four indicators of system thinking, which are system thinking phase I (pre requirement), system thinking phase II (basic), system thinking phase III (intermediate), and system thinking phase IV (coherent expert). Topic: Mathematics, Science, and Computer Science Education 69 Using Argument Mapping in Argument-based Science Inquiry to Improve Students’ Argumentation and Critical Thinking SkillsMoh Nurudin (1,2), Ida Kaniwati (1), Didi Teguh Chandra (1) 1) Physics Education Department, School of Postgraduate Studies, Indonesia University of Education, Bandung, Indonesia 2) The State Islamic Senior High School 5 Cirebon, West Java, Indonesia Abstract The aim of this research is to study how students’ argumentation and critical thinking skill improvement in static fluids concept. The research was conducted in one of the state Islamic senior high schools in Cirebon District, West Java, Indonesia. The research used quasi experiment design with pre-test - post-test control group design in science program. The main result is that experiment class that applied ABSI-AM is better than the control ones that applied ABSI in argumentation skill improvement but not in critical thinking skill improvement. But, the further analysis shows that both argument and critical thinking skills is improved. So, can be said that integrating AM in ABSI can promote both argument and critical thinking skills all at once. Topic: Mathematics, Science, and Computer Science Education 70 The development of text book using integrated learning model for fifth grades student at elementary schoolRisda Amini Universitas Negeri Padang Abstract Problems experienced by elementary school teachers (SDN) No. 51 Bungo Pasang, Padang is a difficulty in implementing thematic learning effectively, so many students who have difficulty studying and answering questions in textbooks. Integrated learning is one of the learning models that can improve the competence of students. To carry out integrated learning textbooks are required. The research aims to develop textbooks using integrated learning model that is valid, practical, and effective for fifth grades students. Therefore it is necessary to develop textbooks that can facilitate students and teachers in implementing thematic learning. This research and development uses four D models consisting of define, design, develop, and disseminate stages. Research respondents are teachers and fifth grades students at SDN No. 51 Bungo Pasang, Padang. The research instruments are interview guide, observation sheet, validation sheet, teacher response questionnaire and students s, learning result test, skill and attitude appraisal sheets. The results show that the developed textbooks have included valid categories based on expert judgment, very practical response of teachers and students. The application of learning with student books developed effectively improves the competence of students. Topic: Mathematics, Science, and Computer Science Education 71 Using Tracker to determine Glycerin Viscosity coefficientA Eko Kustanto), L Hasanah Universitas Pendidikan Indonesia Abstract Computer-based learning media is widely used to improve the quality of physics learning. Complex learning materials become simpler with the advent of computer technology. Tracker application is one of the media that can be used to improve high school physics learning. In this study, glycerin viscosity coefficient was analyzed using tracker application. The ball motion dropped in the glycerin fluid is recorded using the camera, the video recording of the terminal speed is analyzed with the tracker application. The terminal velocity is then used to determine the glycerin viscosity coefficient. Less complex data processing techniques are used in analyzing data to determine glycerin viscosity coefficients, so this can be an alternative to more meaningful physics learning. From the experiment obtained a coefficient value of glycine viscosity 0.1487 N.s / m2. Topic: Mathematics, Science, and Computer Science Education 72 The Effects Of Brain-Based Learning (BBL) On Mastery Of Science Concepts In Primary SchoolT C Bayuni1, A Muharam2,3 and I Muqodas4 1Program Studi Pendidikan Dasar, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 2Program Studi Pendidikan Dasar, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 3 Pendidikan Guru Sekolah Dasar, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia 4 Pendidikan Guru Sekolah Dasar, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia Abstract The aim of the present study is to investigate the effect of Brain Based Learning on mastery of science concepts in primary school. This study took a sample of students in grade five at SDN 10 Ciseureuh Purwakarta (N=60). The study design used was a Nonequivalent Pretest-Posttest Control Group Design. Instrument research is multiple choise test with four answers, questionnaires and observation sheets. During the research process, the experimental group was given lessons with Brain Based Learning approach, and the control group was given the traditional approach. The results of pre-test data analysis showed that the two classes have the same initial capacity, while data from the posttest mean difference test showed differences in the students mastery of concepts between its. Value of gain index analysis results also showed that the experimental group increased mastery of the concept is higher than the control group. Moreover, from the analysis of questionnaires and observation sheets shows that students in BBL class give a positive response. The findings of the study reve¬aled that the BBL approach used in the experimental group was more effective in incre¬asing student achievement than the traditional approach used in the control group. Topic: Mathematics, Science, and Computer Science Education 73 Profil of Student’s Argumentation Skills based On Toulmin’s Argument Pattern (TAP)Tiarasari, Muslim, Lilik Hasanah Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia Abstract Argumentation has an important role in physics learning activities because it provides an opportunity for students to engage in group discussions and give each other opinions that indicate the extent of understanding of concepts, skills, and scientific reasoning abilities. This study aims to the ability to argue students one Vocational High School in Bandung, Indonesia. The method used is a case study method with a sample of 38 student. The results showed that the average ability to argue students is still less with an average value of 51.18. Based on student questionnaire it is found that 48% of students expressed dissatisfaction with Physics lesson, 80% of students stated that physics lesson was difficult, although 76% of students stated that teachers do variation in learning, 72% of students stated by way of teacher to give lesson, Train the ability to argue. The results of interviews conducted on physics subject teachers who stated that they have not sharpened the student’s argument ability, and stated that the method used so far has not been able to hone and improve students argumentation ability, and students argument ability can be honed by appropriate method. Topic: Mathematics, Science, and Computer Science Education 74 Mathematics Learning Based On Ethno-mathematics: Study in SMPN 1 Leuwidamar and SMP N 3 CibadakJarnawi Afgani Dahlan Departeement of Mathematics Educations Universitas Pendidikan Indonesia Abstract The curriculum of school mathematics recommends teachers to use contextual problems in mathematics learning. This recommendation is very realistic, as some findings show that most students have difficulty in applying of mathematics in their daily lives. This occur as a result of the process of mathematics learning, the real world is only used as a place to apply the concept not as a tool and source in learning mathematics. Students do not get the meanings in mathematics knowledge. Facts, concepts, principles, and procedures of mathematics are seen as a row of information to be memorized. This research tried to use socio-cultural context of society in Lebak Banten as a tool in mathematics learning. Some findings showed that students in SMPN 1 Leuwidamar more active in learning process and communication than SMPN 3 Cibadak, but there are no difference in the process of construction in mathematical knowledge; students are able to construct knowledge by inductive processes. Topic: Mathematics, Science, and Computer Science Education 75 The Effect of Peer Assisted Learning (PAL) Strategy on Anatomic Competencies of Prospective Student’s Biology TeachersSariwulan Diana Departemen Pendidikan Biologi FPMIPA UPI, Jl. Dr. Setiabudhi No. 229 Bandung, Indonesia Abstract RResearch about the effect of Peer Assisted Learning (PAL) strategy on Plant Anatomy Course, which aims to improve anatomic competencies of prospective student’s biology teacher, has been done. This study used a quasi-experimental pre-test post-test control group design. The draft includes a group of students who were given a pre-test which is then followed by observing the PAL treatment process and post-test. The other students group (control) was given the pre-test and post-test only. The PAL program began with a discussion between the lecturer and the tutor about the pretest results and then discussion between the tutors and their tutees in the class about the responses items. After that, all students were assigned to answer a set of response items, and then did the posttest. The results showed that the PAL strategy can increase student’s anatomic literacy significantly and can increase student’s anatomic lab skills no significantly. Thus the PAL strategy implementation has a potential to improve student’s anatomic competencies. The generally students weaknesses were they lack practice in interpreting of research results in the graphs form and rarely shared about anatomic lab skills. All students respond positively to the PAL strategy. Topic: Mathematics, Science, and Computer Science Education 76 Level Conceptual Change pre-service elementary Teachers on Electric Current Conceptions Through VMMSCCTextNeni Hermita1,2, Andi Suhandi2,4, Ernawulan Syaodih2,3, Achmad Samsudin4,Isjoni5, Hendri Marhadi1, Fitria Rosa5, Sapriadil4, Adam Malik6, Zaenudin4, Chaerul Rochman6, Mansur2, Firmanul C. Wibowo7 and Rarasaning Satyaningsih2,8 1Program Studi PGSD FKIP, Universitas Riau, Jl. Bina Widya Km 12,5, Pekanbaru 28293, Indonesia 2Program Studi Pendidikan Dasar, Universitas Pendidikan Indonesia, Jl. Setiabudi, Bandung 40154, Indonesia 3Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Setiabudi, Bandung 40154, Indonesia 4Program Studi PGPAUD, Universitas Pendidikan Indonesia, Jl. Setiabudhi, Bandung 40154, Indonesia 5Program Studi Sejarah FKIP, Universitas Riau, Jl. Bina Widya Km 12,5, Pekanbaru 28293, Indonesia 6Program Studi Pendidikan Fisika, UIN Sunan Gunung Djati Bandung, Jl. A.H. Nasution No. 105 Bandung 40614 Indonesia 7Program Studi Pendidikan Fisika, Universitas Sultan AgengTirtayasa, Jl. Raya Jakarta Km 4 Pakupatan Serang 41118, Kota Serang, Indonesia 8Program Studi PGSD, Universitas PGRI Adi Buana Surabaya, Jl. Dukuh Menanggal XII Surabaya, Indonesia Abstract Now a day, conceptual change is the most valuable issues in the science education perspective, especially in the elementary education. Researchers have already dialed with the aim of the research to increase level conceptual change process on the electric conceptions through Visual Multimedia Supported Conceptual Change Text (VMMSCCText). We have ever utilized research and development method namely 3-D + 1I stands for Define, Design, Develop, and Implementation. The 27 preservice elementary teachers were involved in the research. The electric current conception is the futuristic concept which should have been learned by the students. Moreover, the data which was collected reports that static about 25%, disorientation about 10%, reconstruction about 45%, and construction about 20%. It can be concluded that the implementation of VMMSCCText to preservice elementary teachers are increased to level conceptual change categories. Topic: Mathematics, Science, and Computer Science Education 77 Critical Thinking Skills Enhancement of Students Through Implementation of IDEAL Problem Solving Model On Genetic Information CourseAisyah Zirconia, Florentina Maria Titin Supriyanti, Asep Supriatna, Chemistry Education Study Program Graduate School of Indonesia University of Education. Bandung, Indonesia Abstract This study aims to enhance critical thinking skills of students through implementation of IDEAL problem solving model on genetic information course. Method of this research was mixed method, with pretest-posttest nonequivalent control group design. Subjects of this study were chemistry students enrolled in biochemistry course, consisted of 22 students in the experimental class and 19 students in control class. Instrument in this study was essay involves 6 indicators critical thinking skills (i.e. interpretation, analysis, evaluation, inference, examination and self-regulation), observation sheets, student worksheets and questionnaire of student responses. The results showed that genetic information course using IDEAL problem solving model have been enhance critical thinking skills in middle category with of 35%. Based on result for each indicator, showed that there is no indicators of critical thinking skills classified in the high category. For observation results showed only analysis indicator classified in the high category. Next, for student worksheets and questionnaire of student responses result showed 4 indicators of critical thinking skills classified in the high category for each instrument results. The results respectively were Interpretation, analysis, inference, and explanation; Analysis, inference, explanation and self -regulation. Topic: Mathematics, Science, and Computer Science Education 78 The Effectiveness of Learning Materials based on Multiple Intelligence on the Understanding of Global WarmingWinny Liliawati, Purwanto and Roihan Najah Kamal Universitas Pendidikan Indonesia Abstract This study aims to examine the effectiveness of the use of teaching materials based on multiple intelligences on the understanding of high school students material on the theme of global warming. The research method used is static-group pretest-posttest design. Participants of the study were 60 high school students of XI class in one of the public schools in Bandung. Participants were divided into two classes of 30 students each for the experimental class and control class. The experimental class uses compound-based teaching materials while the experimental class does not use a compound intelligence-based teaching material. The instrument used is a test of understanding of the concept of global warming with multiple choice form amounted to 15 questions and 5 essay. The test is given before and after it is applied to both classes. Data analysis using N-gain and effect size. The results obtained that the N-gain for both classes are in the medium category and the effectiveness of the use of teaching materials based on the results of effect size test results obtained in high category. Topic: Mathematics, Science, and Computer Science Education 79 The Development of Interactive Multimedia Based on Auditory, Intelectually, Repetition in Repetition Algorithm Learning to Increase Learning OutcomeMunir (a*), Heri Sutarno (b), Nova Siti Aisyah (c) Universitas Pendidikan Indonesia Jalan dr. Setiabudhi 229 Bandung Abstract This research aims to find out how the development of interactive multimedia based model of Auditory, Intellectually, Repetition; implementation of interactive multimedia on the learning algorithm of repetition; and improved student learning outcomes after doing the learning. This interactive multimedia development through 5 stages. Stage analysis done with the study of literature, questionnaire now spread to students, interviews and observations to the teacher at school. The design phase done by the design of the database, flowchart, storyboards and repetition algorithm material. The development phase is done by the creation of the framework of web-base, presentation material adapted to the model of learning Auditory, Intellectually, Repetition. Auditory points obtained by recording the narrative material, presented a variety of intellectually points with examples of programming, while the case of repetition with the points of Division sub material into some break that gave the opportunity to repeat parts of the material before it. Multimedia and then validated by material and media experts. Implementation phase conducted on grade XI — TKJ2 SMKN 1 Garut. An increase in student learning outcomes in this study, but belongs to the fair classification are based on the indexs Gain of 0.46. This is due to the use of interactive multimedia in learning a new iteration of the algorithm was first done by the students, so that interest students more in interactive multimedia. While the calculation based on the now multimedia assessment by students as a whole earned a percentage of 84.36%, categorized very well. Topic: Mathematics, Science, and Computer Science Education 80 THE APPLICATION OF PROBLEM POSING LEARNING WITH INTERACTIVE MULTIMEDIA ON NETWORK BASICS SUBJECT TO INCREASE SMK STUDENTS UNDERSTANDINGHeri Sutarno (a*), Munir (b), Riksa Griya Ramadhan (c) Universitas Pendidikan Indonesia Abstract This research aims to improve understanding a) students at the Vocational secondary school at meteri TKJ (Computer Network), b) how to increase the ability of understanding the lesson that students use problem posing, c) How learning activities against student responses with the method of problem posing berbantu interactive multimedia using design research group onetime series, while the population of students of class X majors SMK TKJ MedikaCom Bandung as many as 26 people. Knowing the response or the response of the students against the feasibility of use of multimedia learning by applying the method of Problem Posing on the subjects of basic Networks, network topology and hardware can increase understanding. Based on the results of the research results obtained data from interactive multimedia research pemebelajaran obtained from the question form and validation experts comprised of expert media validation, material provided to professors, and the now penilian students against a multimedia interactive learning with the method of problem posing from this research obtained results: 1) top media expert assessment of interactive multimedia with the method of problem posing with of 75.56% and well categorized and expert and material over interactive multimedia probem with the method of posing is 77.50% sign in into the category of good heading in the category very good , decent media used to learning in the classroom. 2) The students gave positive response regarding the multimedia interactive learning with the method of problem posing can be summed up in this multimedia can give impact on students understanding of the views of the existence value of gains acquired for learning effectiveness means 0.42 included in criteria are in improving the understanding of the students. It can also be seen from gaining 71.09% student response now included in the category quite nicely Topic: Mathematics, Science, and Computer Science Education 81 Architecture of Interactive Multimedia-Based Educational Games with LC 7E Model to Improve Understanding of Extrapolation on Server Administration SubjectJajang Kusnendar (a*), Dian Citra Buana (a), Eka Fitrajaya Rahman (a), Munir (a) Universitas Pendidkan Indonesia Abstract This research aims to design and build interactive multimedia-based educational games with learning cycle 7E model to improve the understanding of extrapolation on server administration subject. The development of multimedia is driven by the difficulties experienced by students in understanding the subject matter especially in the server administration DHCP server and DNS server. The methods used in achieving the objectives of this research are methods of Research and Development (R&D), which consists of five phases, namely the stage of the analysis, design, development, implementation, and assessment. At the analysis stage, the data obtained from interviews with server administration subject teacher and students who have studied the subjects. In the design phase carried out the design of the interface, flowchart and storyboard. At this stage of development, waterfall model used to build multimedia. Multimedia validated by media and material experts, and then tried out the material to students who have studied server administration subjects. Validation and tryout result can be seen through assessment questionnaire. The research result shows: 1) multimedia architecture includes five stages of R&D by engaging multimedia elements such as text, graphics, audio, video, animation, and interactivity that is packaged in a program Construct 2, 2) this multimedia can enhance understanding of extrapolating results seen from the average initial value 46 71 becomes after using multimedia, 3) student response towards multimedia categorized either by percentage of 86%. Topic: Mathematics, Science, and Computer Science Education 82 Virtual Environment Based Learning with Integrating LMS and OpenSim in order to Improve Student Learningrasim, Armein Z.R Langi, Yusep Rosmansyah, Munir UPI, ITB Abstract Understanding is the process of thinking and learning. It is necessary for learning increase student motivation to improve understanding. Media and immersive learning environments have a positive impact in improving student understanding. This study intends to create a learning environment in a virtual environment to give immersive and motivation to students. The virtual environment used opensim was integrated with Moodle used sloodle. The results showed a significant difference of learning between classical learning game and learning in virtual environment with a degree of 95% Topic: Mathematics, Science, and Computer Science Education 83 Fixed Point Theorems for Weak Contraction Mapping in Quasi αb-Metric SpaceBUDI NURWAHYU, NAIMAH ARIS Hasanuddin University Abstract In this paper, we introduce quasi αb-metric space as an extension of quasi b-metric space and prove the existence and uniqueness of some fixed point theorems for several different weak contraction mappings in the quasi αb-metric space Topic: Mathematics, Science, and Computer Science Education 84 Statistical Communication: Experimental Study in College Students using SRLE Modellaila hayati, wahyudin, dadang juandi universitas pendidikan indonesia, Abstract one of the goals of statistical education research conducted by researchers is to improve statistical communication of learners. one of the alternative learning model that can be used is statistical reasoning learning environment (SRLE). The study was conducted in Introductory Statistics, at one of the University in Mataram, West Nusa Tenggara. This research is quasi experimental with pretest-posttest control group design. The sample consists of 51 students divided into experimental class and control class. Experimental class got Statistical Reasoning Learning Environment (SRLE) and control class got direct learning (DL). The result obtained that there is enhancement difference of statistical communication ability between students who are taught SRLEL and DL. Need to increase activity and steps of SRLE learning implementation to optimalized statistical communication ability. Topic: Mathematics, Science, and Computer Science Education 85 Using Hypothetical leraning Trajectory in the development of teaching materials of numerical methodsRikayanti University of Singaperbangsa Karawang Abstract Teaching materials are one of the important aspects of a lecture process, in which there are clues to how a student can achieve the target of the lecture. Algorithm is a major part of the numerical course that is widely used in various disciplines, such as data processing experimental results, as well as in product sales model. Through the application of Matlab software, mastery of algorithms in solving problems with various methods can be tested. The research method used is Research and Development, while the development model using Didaktis Design Research (Didactical Design Research / DDR). Topic: Mathematics, Science, and Computer Science Education 86 UTILIZATION OF WASTE AS BIOGAS SUBSTRATE BY DOMINAN MICROBES IDENTIFIEDElin Nurlina 1*, Susanto Sambasri2, Etih Hartati3, Ratu Safitri4, Asep Hodijat5. 1,2Program Study of Electrical, Faculty of Engineering, UNJANI Cimahi 3Program Study of Environmental Engineering, Institut Teknologi Nasional (ITENAS) Bandung 4 Program Study of Biology, UNPAD Bandung 5 High School of Agricultural (STP) Bandung Abstract Indonesia as the tropics have a source of biomass feedstock which is very large, so the waste biomass can be used optimally as an energy source in the form of biogas. This study was conducted to obtain alternative energy from domestic waste materials, given the limited availability of petroleum and natural gas sourced from fossil fuels. This methodology is an experimental method, the process conditions at room temperature 25-27 °C, pH adjusted to the growth of microbes to produce biogas, retention time 20-60 days, the bioreactor is operated with a batch system, the volume of waste in the bioreactor is made permanent, so that the production of biogas in large scale will increase the pressure inside the bioreactor. Biogas is formed accommodated then distributed to the stove. Factors that determine the formation of biogas is a microbial species capable methanogens convert acetate into biogas. From the results of microbial identification of the isolates in the bioreactor, has identified three types of bacteria methanogens namely Methanospirillum hungatei, Methanobacterium polustre and Methanolacina poynteri. The results of this study, domestic waste can be utilized as a substrate in biogas production, with the highest methane composition reaches 50.79%. This result is expected to increase public knowledge to utilize the waste into biogas as a renewable energy to sufficient the energy needs of household, so it does not depend on the energy derived from fossil fuels. Topic: Mathematics, Science, and Computer Science Education 87 Implementation of Higher Order Thinking Virtual Laboratory (HOTVL) on Scientific Communication SkillsSapriadil1*, Agus Setiawan1, Andi Suhandi1, Adam Malik2, Neni Hermita3 1Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Setiabudi, Bandung 40154, Indonesia 2UIN Sunan Gunung Djati Bandung, Jl. A.H. Nasution No. 105 Bandung 40154, Indonesia 3Program Studi PGSD FKIP, Universitas Riau, Jl. BinaWidya Km 12,5, Pekanbaru 28293, Indonesia Abstract Communication skill is one skill that is very needed in this 21st century. Preparing and teaching this skill in teaching physics is relatively important. There had been a research regarding higher order thinking virtual laboratory (HOTVL) on electric connection teaching material which is considered linear to the students’ communication skill achievement. The problem to solve in this research is “how is the higher order thinking virtual laboratory (HOTVL) applied in developing students’ scientific commmunication skill?” This research then employed experimental study particularly one group posttest only design. The subject in this research involved thirty senior high school students which were taken using purporsive sampling. The result of this research shown that higher order thinking virtual laboratory (HOTVL) was fairly effective to be applied for developing students’ scientific communication skills. Topic: Mathematics, Science, and Computer Science Education 88 The Use of Drawing as An Alternative Assessment Tool in Biology TeachingIkmanda Nugraha Ipse FPMIPA UPI Abstract Abstract. Science required the recording of data to build knowledge. The act of drawing an illustration is one of the oldest methods to record the data in science. Illustration in science provides information that the written word cannot, hence the old adage “A picture is worth a thousand words” is very important for studying science. Drawings an illustration is not only valuable for artists but also for scientists because some aspects of science process skills can also be developed through drawing. In term of science teaching, applicating the act of drawing can also be used as an assessment tool. In this study, we assessed drawing of human internal organs of 38 student teachers who enrolled human physiology course and its correlation to their final exam achievement. Guidance for biological drawing was employed to assess the quality, labelling, and annotations of the drawing. The finding of this study showed that there was a positive correlation between the quality of drawing and final exam achievement. It is suggested that using the method of drawing in combination with written responses assessment would provide a more complete information about student’s understanding of human internal organs. Topic: Mathematics, Science, and Computer Science Education 89 IMPLEMENTATION OF PERSONALIZED SYSTEM OF INSTUCTION METHOD-BASED INTERACTIVE MULTIMEDIA TO IMPROVE CONCEPT MASTERY IN BASIC ALGORITHM AND PROGRAMMINGDiyana Susanti, Enjang Ali Nurdin, Dedi Rohendi Universitas Pendidikan Indonesia Abstract This research aims to develop Personalized System of Instruction (PSI) method-based interactive multimedia, to examine improvement of concept comprehension on basic programming algorithm subject after the implementation of the media, and to discover students’ responses after the implementation of the media. Participants in this research were tenth grade TKJ students at SMK Putra Pajajaran 2 Bandung. Development of PSI method-based interactive multimedia used multimedia development by Munir, consisting of five stages, namely analysis, design, development, implementation and testing. After the stage of interactive multimedia development and validation by media and material experts, PSI method-based interactive multimedia was subsequently implemented on learning process. Overall calculation result of gain test is 0.454, which means there is improvement of concept comprehension. The students gave positive responses on the learning that implemented PSI method-based interactive multimedia, proved by questionnaire results, which is 71.57% and is on good category, even 82.23% students responded the statement that this media give new atmosphere in learning. Topic: Mathematics, Science, and Computer Science Education 90 Enhancing student scientific attitudes towards physics lesson through inquiry-based learningRifati Dina Handayani (a*), Triyanto (b) a) Physics Education Department, University of Jember, East Java, Indonesia 68121 b) Civic Education Department, Sebelas Maret University, Indonesia 57126 Abstract The purpose of this study was to investigate student scientific attitudes toward physics lesson through inquiry-based learning. The sample in this study selected using stratified random sampling technique. Interactive data analysis consists of two stages: data collection and data display. The data collected by observation and interviews. Statistical results indicated that the student scientific attitudes towards science were a positive attitude. Inquiry-based learning enhances student scientific attitude, where the most visible indicator of scientific attitudes is students curiosity. Building scientific attitude can provide a logical solution to the problem student may face in their daily life and have scientific thinking skills. Creating and using science concepts related to students’ lives and interests will provide opportunities for a student to build their scientific attitude through meaningful learning activities. Scientific attitudes are grown through a series of experiences that students discover on their own during the learning process Topic: Mathematics, Science, and Computer Science Education 91 ISOLATION OF PHYCOCYANIN FROM Spirulina fusiformis AND ITS THERMAL STABILITYHeli Siti Halimatul1*, Gun Gun Gumilar1, Katon Dorojatun1, Siti Aisyah1, Asri Peni Wulandari2 1) Program Studi Kimia, FPMIPA Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Jawa Barat-Indonesia 2) Program Studi Biologi, FMIPA Universitas Padjajaran, Jalan Raya Bandung-Sumedang Jatinangor Sumedang 45363, Jawa Barat-Indonesia. *heli[at]upi.edu Abstract Spirulina fusiformis is one of the major sources of a blue pigment phycocyanin which has commercial and biotechnological value for biomedical research, as well as a natural colorant for food and cosmetic industries. This study aims at investigating the characteristic of isolated phycocyanin from Spirulina fusiformis and its stability under different temperature. A food grade phycocyanin with purity of 2.0 (A620/A280) was successful to be obtained from Spirulina fusiformis cultured in seawater-based medium and purified by ammonium sulfate precipitation. Thermal degradation was found to follow zero order. No significant changes were observed in the relative concentration of phycocyanin (CR) at temperature up to 50oC over 30 minutes of incubation. In contrast, incubation at 60oC and relatively high temperature resulted in a decrease in the CR and half-life in a temperature-dependent manner. Taken together, our results suggest that the optimal condition for preserving the stability of food grade phycocyanin isolated from Spirulina fusiformis is taking it at low temperature. Topic: Mathematics, Science, and Computer Science Education 92 The Educational Game Design on Relation and Function MaterialsSurya Amami Pramuditya (a,b*), Muchamad Subali Noto (b) and Dede Syaefullah (b) a) Departement of Mathematics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia *amamisurya[at]gmail.com b) Departement of Mathematics Education, Universitas Swadaya Gunung Djati, Jl. Perjuangan No.1 Cirebon 45134, Indonesia Abstract Information technology development is certainly very helpful and important for life, especially for education. Media is always associated with technology. Media is considered important because as a tool in the learning process both inside and outside the classroom and can also be used in the framework of communication and interaction with teachers and students in the learning process. Smartphone technology is currently growing very rapidly, especially for Android platform. Game is one of the entertainment media that becomes an option to eliminate boring or just to spend a time. Educational games specifically designed to teach users a particular learning, developing concepts and understanding and guiding them in training their abilities and motivating them to play it. Game of mathematics education is a game inserted by mathematics learning content. This article discusses development research of designing educational game. The purpose of this research was to produce educational games on relation and function, which should be valid and practical. This research adapts the development model of ADDIE, restricted by analysis, design, and development. Data were collected from validation and practical sheets and analyzed descriptively. The result of this research were as follows (1) educational game were valid, (2) educational game were practical. Topic: Mathematics, Science, and Computer Science Education 93 Pre-Service Primary School Teachers’ Abilities in Explaning Water and Air Pollution ScientificallyLukmannudin(a*), Wahyu Sopandi(a), Atep Sujana(a,b) and Rendi R. Sukardi(a) a} Primary Education Study Program, Graduates School, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia * lukmannudin[at]student.upi.edu b) Primary School Teachers Education Study Program, Sumedang Regional Campus, Universitas Pendidikan Indonesia, Jl. Mayor Abdurrahman No. 211, Sumedang 45322, Indonesia Abstract The purpose of this study is to determine the ability of pre-service primary school teachers (PSPST) in explaining the phenomenon of water and air pollution scientifically. The research method used descriptive method of analysis with qualitative approach. The respondents were PSPTP at 4th semester. This study used a four-tier instrument diagnostic test. The number of subjects was 84 PSPTP at Universitas Pendidikan Indonesia, Sumedang Regional Campus. The results demonstrate the ability of PSPST in explaining water and air pollution scientifically. The results show that only 6% of PSPST who are able to explain the phenomenon of water pollution and only 4% of PSPST who are able to explain the phenomenon of air pollution. The fact should be attention for PSPST because these understanding are crucial in the process of learning activities in the classroom. Topic: Mathematics, Science, and Computer Science Education 94 Public Preception on Education Partnership Programs Between Indonesia and Australia in East Nusa Tenggara ProvinceMaria Lobo, Robertus Dole Guntur, Hilda M. Nalley Universitas Nusa Cendana Abstract A research about partnership program in education between the government of Indonesia and Australia in East Nusa Tenggara Province (ENTP) has been conducted. The aim is to list the programs between the countries on the region in the last twenty years, together with their implementations to the community based on all the stakeholders’ perspectives. The samples taken by purposive sampling which targeted those who had direct involvement to the programs in the Districts of Sikka, Ende and Ngada. A literature review, questioners and a depth interview were employed in the data collection. The results show that the main partnership projects were NTT-PEP (Nusa Tenggara Timur-Primary Education Partnership), AIBEP (Australia Indonesia Building Education Project) and ProDEP (Professional Development for Education Personal). While the first and the third programs were targeting on human resources development, the second project was more focusing on the infrastructures. The analysis shows that in general, the majority of people think that the program implementation was good. Similar results were also reflected in the group of superintendent and the community. However, totally different feature was found in the group of government officials where all of them preceived that the program was good and need to be continued and sustained. Topic: Mathematics, Science, and Computer Science Education 95 Comparison effectiveness of cooperation learning type STAD with cooperation learning type TPS in terms of mathematical method of Junior High School studentsAstri Wahyuni Islamic University of Riau Abstract This research is aimed to find out whether the model of cooperative learning type Student Team Achievement Division (STAD) is more effective than cooperative learning type Think-Pair-Share in SMP Negeri 7 Yogyakarta. This research was a quasi-experimental research, using two experimental groups. The population of research was all students of 7th class in SMP Negeri 7 Yogyakarta that consists of 5 Classes. From the population were taken 2 classes randomly which used as sample. The instrument to collect data was a description test. Measurement of instrument validity use content validity and construct validity, while measuring instrument reliability use Cronbach Alpha formula. To investigate the effectiveness of cooperative learning type STAD and cooperative learning type TPS on the aspect of students mathematical method, the datas were analyzed by one sample test. Comparing the effectiveness of cooperative learning type STAD and TPS in terms of mathematical communication skills by using t-test. Normality test was not conducted because the sample of research more than 30 students, while homogeneity tested by using Kolmogorov Smirnov test. The analysis was performed at 5% confidence level. The results show as follows : 1) The model of cooperative learning type STAD and TPS are effective in terms of mathematical method of junior high school students. 2). STAD type cooperative learning model is more effective than TPS type cooperative learning model in terms of mathematical methods of junior high school students. Topic: Mathematics, Science, and Computer Science Education 96 Palynological Study of Pollen Impacted by the Haze of Hisbiscus rosa-sinensis from Riau Province and Its Development as a Teaching Material for Plant Anatomy SubjectDesti Biology Education Program Faculty of Teacher Training and Education, Islamic University of Riau Abstract The research about palynological study of pollen impacted by the haze of Hisbiscus rosa-sinensis from Riau Province and its development as a teaching material for plant anatomy subject has been conducted in Biology Laboratory of Islamic University of Riau. The objective of this research and development is to find out of the pollen morphology of H. rosa-sinensis which is impacted by the haze and to find out how the result of this study developed for teaching materials (based on handout) for plant anatomy subject. The method of current study is descriptive. The analysis data used descriptive qualitative. The result showed that pollen has several characteristics which can be observed, such as aperture, pollen shape, pollen viability, and type of exine ornamental of H. rosa-sinensis which is impacted by the haze. Pollen was observed is single pollen type, spheroidal sarcoid, polyphenoporate aperture type and exterior ornament. From result of research can be concluded that there is difference of pollen analysis between plant observed. Implication of research results in learning in the form of teaching materials based on handouts for Plant Anatomy subject. Based on the validation results, it is known that the teaching materials that have been prepared can be used in the learning with percentage level achievement of 90.91% for teaching materials. The subject matter of Plant Anatomy which has been prepared based on the research results can be used in the learning process (on very good category). Topic: Mathematics, Science, and Computer Science Education 97 MATHEMATICAL INTELLIGENCE DEVELOPED IN MATH LEARNING WITH CLASSICAL BACKSOUND MUSIC OF THE CLASSICAL ERAKarlimah Universitas Pendidikan Indonesia Kampus Tasikmalaya Abstract Classical backsound music can enhance human intelligence, such as mathematical intelligence (Gunara, 2008; Muttaqin & Kustap, 2008, pp. 16-21; Djohan, 2003; Merritt, 2003, pp. 6-7). Therefore, this study aims to determine the effects of applying classical backsound music in mathematics learning by using quasi-experimental design method with a nonequivalent pretest-posttest control group. The results prove that classical music of the classic era made a high contribution to elementary school students’ mathematical intelligence. The mathematical intelligence in question is on the cognitive ability ranging from the knowledge level (C1) to evaluation (C6). High-level mathematical intelligence was shown by students in Reading and writing integers in words and numbers. Meanwhile, the low mathematical intelligence existed in projecting word problems into mathematical problems. These results suggest that classical backsound music of the classic era must be applied in mathematical problem-solving learning. Topic: Mathematics, Science, and Computer Science Education 98 The development teaching materials of chemical representation on redox reaction topic by using knowledge building environment to develop science process skillsYuli Andrianto Departemen Pendidikan Kimia, SPs Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This research aims to develop teaching materials on redox reaction topic for high school students through Four Steps Teaching Material Development (4STMD) and test the level of comprehension, expose characteristics, describe knowledge building environment, and test feasibility. This research is based on the unavailability of high school chemistry materials presented an integrated redox reaction topic and based on knowledge building environment. This research uses development research method. The development of teaching materials consists of the design step, development step with 4STMD (selection, structuring, characterization, and didactic reduction step), and evaluation step by testing its comprehension and feasibility. The development of this resource consists the step of selection, structuring, characterization, and didactic reduction. Selection step is an assessment of Kompetensi Inti (KI) and Kompetensi Dasar (KD) then determine the appropriate theme, make an indicator of achievement and developed aspects of the values contained in the concepts of matter. Structuring step is the steps of making a concept map, macro structure, and multiple representations. This multiple representation is an attempt at presenting data which includes macroscopic, submicroscopic and symbolic representations. Next, at the characterization step, characterization of the concepts conducted on 91 students of class X IPA. Data from the results of the characterization step become the basic for didactic reduction of concept which is difficult for students to understand. The characteristics of teaching materials include presentation format of teaching materials, proximity of teaching materials with daily life of students with knowledge building environment, developing science process skills with teaching materials, and suitability of teaching materials with BSNP standards. Based on the test, the teaching materials have met the aspect of high category comprehension. Knowledge building environment on teaching materials is developed by linking the contexts in redox reactions with phenomena in daily life. The results of this research is a draft of teaching materials which will be in the test of its comprehension and content feasibility aspect, feasibility of presentation, language feasibility, and feasibility of graduation. So it can be used as teaching materials to develop science process skills. Topic: Mathematics, Science, and Computer Science Education 99 Students Mathematical Communication Ability using Learning Cycle 7E on Junior High SchoolNUR HIDAYAT DAMAR JATI(a*), BUDIYONO (b), ISNANDAR SLAMET(b) a) Magister Pendidikan Matematika, Universitas Sebelas Maret, Jl. Ir. Sutami No. 36A, Kentingan, Surakarta 57126, Indonesia *nurhidayatdamarjati06[at]gmail.com b) Magister Pendidikan Matematika, Universitas Sebelas Maret, Jl. Ir. Sutami No. 36A, Kentingan, Surakarta 57126, Indonesia Abstract This study aims to determine whether there are differences in the effect of applying learning cycle 7E and direct learning to students’ mathematical communication ability in junior high school. This research was conducted at junior high school 16 Surakarta. This study was conducted in the even semester of 2017. This research uses experimental method. The study sample consisted of two classes taken randomly from the eighth grade. The experimental class is treated 7E learning cycle and the control class is given direct learning. Methods of data collection in this study using the method of documentation and test methods. The data analysis in this research uses t-test. Data obtained from experiment class and control class. The results of this study conclude that there are differences in the effect of applying the learning cycle 7E and direct learning to students mathematical communication ability. This proves that students mathematical communication ability using 7E learning cycle is better than students mathematical communication ability using direct learning. This happens because the Learning cycle 7E there are steps that can be used to improve the ability of mathematical communication such as elicit, engage, explore, explain, elaborate, evaluate and extend. Learning cycle 7E can be used to improve students’ mathematical communication ability of junior high school. Topic: Mathematics, Science, and Computer Science Education 100 Analysis of Students’ Spatial Thinking in Geometry: 3D Object into 2D RepresentationF R Fiantika 1, C L Maknun 2, I K Budayasa3 and A Lukito4 1,3,4 Department of Mathematics Education, Universitas Negeri Surabaya, Jalan Ketintang Surabaya, Indonesia, email: fentfeny[at]gmail.com or fenyrita[at]unpkediri.ac.id 1 Department of Mathematics Education, Universitas Nusantara PGRI Kediri, Jalan K H achmad dahlan 76 Kediri, Indonesia 2 Department of Mathematics Education, Graduate school of education, Universitas Pendidikan Indonesia, Jalan SetiaBudi no 229 Bandung, Indonesia Abstract Abstract: The aim of this study is to find out the spatial thinking process of students in transforming 3-dimensional (3D) object to 2-dimensional (2D) representation. Spatial thinking is helpful in using maps, planning routes, designing floor plans, and creating art. The student can engage geometric ideas by using concrete models and drawing. Spatial thinking in this study is identified through geometrical problems of transforming a 3-dimensional object into a 2-dimensional object image. The problem was resolved by the subject and analyzed by reference to predetermined spatial thinking indicators. Two representative subjects of elementary school chosen based on mathematical ability and visual learning style. Explorative description through qualitative approach was used in this study. The result of this study are: 1) there are different representations of spatial thinking between a boy and a girl object, 2) the subjects has their own way to invent the fastest way to draw cube net. Topic: Mathematics, Science, and Computer Science Education 101 Enhancement of Students Creative Thinking Skills on Mixture Separation Topic Using Project Based Student WorksheetResti Nurisalfah (a*), Noor Fadiawati (b), Tri Jalmo (c) a) Student of Science Education of Postgraduate Program, Lampung University. Prof. Dr. Soemantri Brojonegoro St. Bandar Lampung, Lampung Province, Indonesia. b) Lecturer of Science Education of Postgraduate Program, Lampung University. Prof. Dr. Soemantri Brojonegoro St. Bandar Lampung, Lampung Province, Indonesia. c) Lecturer of Science Education of Postgraduate Program, Lampung University. Prof. Dr. Soemantri Brojonegoro St. Bandar Lampung, Lampung Province, Indonesia. Abstract The aim of this study was to describe the effectiveness of project based student worksheet in improving students creative thinking skills. The research method used was quasi experiment with the matching pretest posttest control group design. The population in this research was all student of class VII SMP N 2 Belitang Madang Raya with class VII1 as control class and class VII4 as experiment class. The sample of this research was obtained by purposive sampling technique. The effectiveness of project based student worksheet was based on significant posttest differences between the control class and the experiment class as well as the effect size. The result show that the using of project based student worksheet was effective in improving students creative thinking skills on mixture separation topic. Topic: Mathematics, Science, and Computer Science Education 102 The Effect of Using Students Teams Achievement Division (STAD) Cooperatif Learning on Conceptual UnderstandingPutri wahyuni Mathematics Education Universitas Islam Riau, UIR Pekanbaru, Indonesia Abstract This research was conducted based on the fact that the students conceptual understanding were still low. To solve this problem STAD cooperative learning model was applied. This was a quasi experimental research. The population of this research was the student of MTsN Pekanbaru. By Using random sampling technique. The data was gotten through a test on conceptual understanding. The data gotten then was analyzed by using t-test, Mann-Whitney U test and two ways Anava. The result of the research showed that: (1) the conceptual understanding of the students taught by using STAD cooperative learning model was higher than those taught by using conventional method, (2) ) the conceptual understanding of the students having high previous knowledge taught by using STAD cooperative learning model was higher than those taught by using conventional method, (3) the conceptual understanding of the students having low previous knowledge taught by using STAD cooperative learning model was higher than those taught by using conventional method. Topic: Mathematics, Science, and Computer Science Education 103 DEVELOPMENT OF STUDENT PERFORMANCE ASSESSMENT BASED ON SCIENTIFIC APPROACH FOR A BASIC PHYSICS PRACTICUM IN SIMPLE HARMONIC MOTION MATERIALSDR. IR. VINA SEREVINA, DEWI MULIYATI, M.SI, M.Sc State University of Jakarta Abstract This research aims to develop students performance assessment instrument based on scientific approach is valid and reliable in assessing the performance of students on basic physics lab of Simple Harmonic Motion (SHM). This study uses the ADDIE consisting of stages: Analyze, Design, Development, Implementation, and Evaluation. The student performance assessment developed can be used to measure students skills in observing, asking,conducting experiments, associating and communicate experimental results that are the 5M stages in a scientific approach. Each grain of assessment in the instrument is validated by the instrument expert and the evaluation with the result of all points of assessment shall be eligible to be used with a 100% eligibility percentage. The instrument is then tested for the quality of construction, material, and language by panel (lecturer) with the result: 85% or very good instrument construction aspect, material aspect 87,5% or very good, and language aspect 83% or very good. For small group trial obtained instrument reliability level of 0.878 or is in the high category, where r-table is 0.707. For large group trial obtained instrument reliability level of 0.889 or is in the high category, where r-table is 0.32. Instruments declared valid and reliable for 5% significance level. Based on the result of this research, it can be concluded that the student performance appraisal instrument based on the developed scientific approach is declared valid and reliable to be used in assessing student skill in SHM experimental activity. Topic: Mathematics, Science, and Computer Science Education 104 PROGRAM FOR REPLACEMENT IN BASIC SCHOOL IN LEARNING WITH PROBLEM BASED LEARNING METHOD (PBL) TO INCREASE STUDENT LEVELS IN ENVIRONMENTEndang Rustandi, Hertien Koosbandiah S. Basic Education Study Program, Universitas Pendidikan Indonesia Abstract This study aims to get a picture of differences in students awareness attitude to the environment through the method of Problem Based Learning (PBL). The method used in this research is using quasi experiment (quasi experiment), with the research design used is "Nonequivalent control group design". The sample of this research is the fourth grade of elementary school students selected using purposive sampling method. Data collection was obtained through a questionnaire of natural science, observation format and questionnaire to collect data related to students attitude to the environment. The results showed that the application of Problem Based Learning method (PBL) can improve students understanding of the concept of natural science and students awareness of the environment. This is evidenced by the average normalized gain scores (N gain) understanding of the concept of Natural Science in the control class of 0.15 and in the experimental class of 0.43. While the attitude of students awareness on the environment in the control class of 0.24 and in the experimental class of 0.54. Based on the results of this study, researchers recommend that other researchers who are interested in continuing this research need to do further research on the application of learning with proble mbased learning (PBL) method in order to look positive results from this model, in addition, students critical thinking skills and student activities Need to be more thorough. Topic: Mathematics, Science, and Computer Science Education 105 Implementation of problem-based learning (PBL) approach to improve student’s academic achievement and creativity on the topic of electrolyte and non-electrolyte solutions at vocational schoolWawan Wahyu (a*), Kurnia (b), Rika Siti Syaadah (b) Departemen Pendidikan Kimia, FPMIPA Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia *wawan_wahyu[at]upi.edu Abstract The purpose of this study was to investigate the implementation of PBL to improve student’s academic achievement and creativity on the topic of electrolyte and non-electrolye solutions. This study was conducted as a descriptive method with case study design. Subject of this study consisted of 30 students in the class X. Instruments used in the study included tests, observation sheets. Student’s achievement changes is calculated using N-gain formula, the data that have been processed then analyzed descriptively. The results showed generally academic achievement and creativity of students has increased indicated by the value of N-gain (0,667; 0,656). The results of the study also show that there is a correlation with the moderate category between the academic achievement and the students thinking creativity is indicated by (r = 0.413), in while the relationship between academic achievement and creativity acts (r = 0.340) belongs to the weak category. Implementation of PBL had a good response from students with percentage 80,3%. Based on these findings, PBL recommended to be applied on the learning process of other chemical topics that have suitability characteristics between learning materials with PBL stages to develop academic achievement and creativity of students. Topic: Mathematics, Science, and Computer Science Education 106 Development of Essay Training Application Using Nazief & Adriani Algorithm And Cosine Similarity MethodAde Bastian, Harun Sujadi, Pendi Angga Sukmana Majalengka University Abstract Examination Essay is one of the evaluation process that is often implemented by every field of education to know the ability of students. With the implementation of essay-based exams, students can not guess the answers in essays and lecturers can assess the development of the ability of students in answering questions. However, there are some problems that often occur when the lecturer evaluates the result of the essay exam, the time needed to check the answers manually will be long and the value given to each student is often inconsistent when the essay answers some students are the same. To solve these problems requires an application that makes the essay exam answer work faster than usual and to calculate the value can be equated with the answer key by using the Cosine Similarity method so that the assessment of the answer is more accurate with the answer key. In order to more accurate key assessment of the answer required stemming first. Which is the word that affixed back to the word base. The process uses the Nazief and Adriani Algorithms. After the Cosine Similarity method and the Nazief & Adriani algorithm are incorporated into the application precisely in the process of calculating the value of the answer, then the time of essay assessment will be fast and the value obtained by the student will be more consistent. Topic: Mathematics, Science, and Computer Science Education 107 Application of Learning Process Oriented Guided Inquiry Learning (POGIL) Model to Improve Cognitive Ability and Skill of Science Process of Elementary Students on Light Material and Its NatureYati Sumiarti, Andi Suhandi Basic Education Study Program of UPI Graduate School Abstract This study aims to get a picture of cognitive improvement and science process skills between students who get POGIL learning compared with students who received conventional learning. The research method used is pre experimental with the equivalent pretest-posttest control group design ". Samples of the research is the 5th grade elementary school students were selected using random assignment. Data collection was done by pretest and posttest to measure the improvement of cognitive ability and students science process skill, observation device, and observation sheet of learning model implementation of POGIL. The result of the research shows that the application of Learning Oriented Guided Inquiry Learning (POGIL) model improves students cognitive and KPS skills. This is evidenced by the average normalized gain score (N gain) cognitive ability of 0.37 in the medium category and the average N gain for science process skills is 0.46 in the moderate category. These results indicate that the potential of POGIL learning model as one of the learning model that can improve cognitive ability and students science process skill. Topic: Mathematics, Science, and Computer Science Education 108 DISCOVERY LEARNING MODEL AIDED GEOGEBRA FOR INCREASING VISUAL THINKING AND MATHEMATICAL RESILIENCEDadang Juandi and Nanang Priatna FPMIPA UPI Abstract In general, this study aims to develop models and textbooks with the implementation of geogebra-assisted discovery learning to improve the ability of visual thinking and mathematical resilience of high school students. This objective can be achieved through: (1) development of models and textbooks that implement geogebra-assisted discovery learning, and testing of textbooks, (2) analyzing, evaluating, and conducting experimental activities using models and textbooks that implement geogebra-assisted discovery learning . This study used quasi-experimental method, with non-random pretest-post control design. The subject of this research is high school students in one school in Bandung. The required data will be collected through documentation, observation, questionnaires, written tests, interviews, daily journals, and student worksheets. Data analysis was done quantitatively, and other parts were analyzed qualitatively. The results of this study are: 1) Increasing the ability of Viusual Thinking students who obtain learning with the implementation of Geosgebra-assisted Discovery Learning strategy is significantly higher than in students who obtain conventional learning; 2) There is a difference in the improvement of students Visual Thinking abilities between groups of early mathematical abilities (high, medium, and low) who gain learning by applying the Geogebra-assisted Discovery Learning strategy. The increase in Viusual Thinking ability of the upper groups is significantly higher than in the moderate and lower groups. Increased ability of Visual Thinking groups was significantly higher than in the lower group; And 3) There is a significant difference in the achievement of mathematical Resilience among students who obtained learning with the implementation of Geogebra-assisted Discovery Learning strategy with students who received conventional learning. The achievement of mathematical Resilience that gained learning with the implementation of Geogebra-assisted Discovery Learning strategy is better than conventional learning. Topic: Mathematics, Science, and Computer Science Education 109 The Learning Of Aquaponic Practice in UniversityT W Agustina1,2,a), N Y Rustaman1, Riandi1, W Purwianingsih1 indonesia university of education Abstract Abstrak. The Aquaponic as one as of the topic on Urban Farming. The preliminary study aims to obtain a description of the perfomance capabilities, product and packaging of harvest kale by student used an aquaponic. The creating of aquaponic used a STREAM (Science-Technology-Religion-Art-Matematics) approach.. The method was explanatory sequential mixed method. The study was conducted on one class of Biology Education students at the one of the universities in Bandung, Indonesia.The sample was chosen purposively with the number of students as many as 49 people. The study instruments are student worksheet, observation sheet of performance assessment and product assessment, interview sheet and field note. The indicator of performance assessment rubrics is the creation of aquaponics technology in accordance with the design.The product assessment rubrics are criteria on the kale ready to harvest and packaging of the kale post-harvested. The interview rubric is in the form of student constraints in aquaponic. The results of the study can be stated most students show that enough category until good category on performance assessment. In the product assessment shows that almost all students have the ability is good category on the kale harvest and category enough on the packaging ability of the kale post-harvested..The implication of the study is to keep students’ habits in learning and practice with STREAM approach. Topic: Mathematics, Science, and Computer Science Education 110 Virtual Laboratory Learning Media Development to Improve Science Literacy Skills of Mechanical Engineering Students on Basic Physics Concept of Measurement MaterialEidelweis Dewi Jannati1, A Setiawan2, P Siahaan3 and CH Rochman4 1Mechanical Engineering Study Program, Majalengka University 2Mechanical Engineering Education, Indonesia University of Education 3Physics Education, Indonesia University of Education 4Physics Education, UIN Sunan Gunung Djati Bandung Abstract This study aims to determine the description of virtual laboratory learning media development to improve science literacy skills of Mechanical Engineering students on the concept of basic Physics. Quasi experimental method was employed in this research. The participants of this research were first semester students of mechanical engineering in Majalengka University. The research instrument was readability test of instructional media. The results of virtual laboratory learning media readability test show that the average score is 78,5%. It indicates that virtual laboratory learning media development are feasible to be used in improving science literacy skill of Mechanical Engineering students in Majalengka University, specifically on basic Physics concepts of measurement material. Topic: Mathematics, Science, and Computer Science Education 111 EFFECT OF CHRONOTYPE AND STUDENT LEARNING TIME ON MATHEMATICAL ABILITY BASED ON SELF-REGULATED LEARNINGNani Ratnaningsih, R. Reza El Akbar, Edi Hidayat Universitas Siliwangi Abstract Various ways taken by teachers to improve students learning ability. One of them by conducting relevant research, with the purpose of obtaining method to improve students ability in learning. Research often studied them on the modification of teaching methods, use of teaching media, motivation, interests and talents of students. Research related to the internal condition of students becomes very interesting to studied, including research on circadian rhythms. Every person in circadian rhythms has its own Chronotype, which divided into two types namely early type and night late type. Chronotype affect the comfort in activity, for example a person with Chronotype category of early type; tend to be activities that are more comfortable in daytime. The purpose of this study examines the conditions of students, related Chronotype suitable or appropriate for student learning time. This suitability then studied in relation to the ability of learning mathematics with self-regulated learning approach. This study consists of three stages, first student Chronotype measurement, second data retrieval and third analysis of research results. The results of this study show the relationship between the students learning ability in mathematics to learning time corresponding to Chronotype. Students learning ability tends to be higher, in students who have a learning time corresponding to the students Chronotype Topic: Mathematics, Science, and Computer Science Education 112 Using NCLab-Karel to Improve Computational Thinking Skill of Junior High School StudentsJajang Kusnendar, Harsa Wara Prabawa Universitas Pendidikan Indonesia Abstract Increasingly human interaction with technology and the increasingly complex development of digital technology world make the theme of computer science education interesting to study. The antecedent studies related to Computer Literacy and Competency reveal that Indonesian teachers in general have fairly high computational skill, but their skill utilization are limited to some applications. This engenders limited and minimum computer-related learning for the students. On the other hand, computer science learning is considered solitaire due to its disconnection from its relation and relevance in solving daily problem. This paper attempts to address the utilization of NCLab-Karel in shaping the computational mindset in students. This computational mindset is believed to be able to making learn students about technology. Implementation of Karel utilization provides information that Karel is able to increase student interest in studying computational material, especially algorithm. Observations made during the learning process also indicate the growth and development of computing mindset in students. Topic: Mathematics, Science, and Computer Science Education 113 Fuzzy Analytical Hierarchy Process for Best Rayon Selection in Multi-Perspective: The Case on PT. PLN (Persero) Area CirebonEdwin Ginanjar Sonjaya, Akik Hidayat, Erick Paulus Universitas Padjadjaran Abstract Every year, the best Rayon selection is conducted by the assessment team of PT.PLN (Persero) Cirebon with the goal to increase the spirit of company members in providing an improved services for customers. However, there is a problem in this case, which is the importance/intensity of each criterion in the selection that are often assessed subjectively. To solve this problem, Fuzzy Analytical Hierarchy Process are used, F-AHP can covers AHP scale deficiency in the form of ‘crisp’ numbers, which are considered unable to handle uncertainty, so it should be considered to use Fuzzy logic approach. Fuzzy approach, especially triangular fuzzy number towards AHP scale, are expected to minimize the handling of subjective input, which then will make a more objective results. Thus, this research was conducted to help the management or assessment team in the selection of the best Rayon with a more objective selection in according to the company criteria. Topic: Mathematics, Science, and Computer Science Education 114 Using HOT Lab to Increase Pre-service Physics Teacher’s Critical Thinking SkillsA Malik1,2 a), A Setiawan1, A Suhandi1, A Permanasari1, A. Samsudin3, N. Hermita4 1 Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 2 Program Studi Pendidikan Fisika, UIN Sunan Gunung Djati Bandung, Jl. A.H. Nasution No. 105 Bandung 40614, Indonesia 3 Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 4 Program Studi PGSD. Universitas Riau Jl. Bina Widya KM 12,5 Pekanbaru 28293, Indonesia Abstract This study aimed at investigating pre-service teacher’s critical thinking skills improvement through Higher Order Thinking (HOT) Lab on RL circuit topic. This research used a quasi-experiment method with Pretest-Posttest Control Group design. The study subjects were 60 students of Physics Education of UIN Sunan Gunung Djati Bandung. Random sampling technique selected the samples. The instrument for measuring critical thinking skills is essay test. Data were then analyzed using average n-gain, effect size, and t-test. The results showed that the critical thinking skills of students using the HOT Lab were higher than the verification lab. Implementation of HOT Lab-based problem solving can develop high-level thinking skills through the laboratory. Therefore, it was concluded that the application of HOT Lab was more effective for enhancing students thinking skills on RL circuit topic. Finally, HOT Lab can be used for other physics topics learning. Topic: Mathematics, Science, and Computer Science Education 115 ENVIRONMENTAL MANAGEMENT AND MONITORING FOR EDUCATION BUILDING DEVELOPMENTRina Marina Masri Civil Engineering Department, Universitas Pendidikan Indonesia Abstract The purpose of research were (1) a conceptual, functional model designed and implementation for environmental management and monitoring for education building development, (2) standard operational procedure made for management and monitoring for education building development, (3) assessed physic-chemical, biological, social-economic environmental components so that fulfilling sustainable development, (4) environmental management and monitoring program made for decreasing negative and increasing positive impact in education building development activities. Descriptive method is used for the research. Cikapundung watershed, Bandung, West Java, Indonesia was study location. The research was conducted on July 2016 to January 2017. Spatial and activities analysis were used to assess physic-chemical, biological, social-economic environmental components. Environmental management and monitoring for education building development could be decreasing water, air, soil pollution and environmental degradation in education building development activities Topic: Mathematics, Science, and Computer Science Education 116 Students Mental Model in ElectricityY S Pramesti, I Setyowidodo University of Nusantara PGRI Kediri Abstract Abstract. Electricity is one of essential topic in learning physics. This topic was studied in elementary until university level. Although electricity was related to our daily activities, but it doesn’t ensure that students have the correct concept. The aim of this research was to investigate and then categorized the students’ mental model. Subject consisted of 59 students of mechanical engineering that studied Physics for Engineering. Data were analyzed qualitatively by using pre-test, post-test, and investigation for discovering further information. Three models were reported, showing a pattern which related to individual way of thinking about electricity. The mental model that was discovered in this research are electricity as a flow, electricity as a source of energy, and electricity as a moving charge. Topic: Mathematics, Science, and Computer Science Education 117 Students Critical Thinking Skills in Authentic Problem Based LearningLia Yuliati, Rofiatul Fauziah, Arif Hidayat Physics Department, Universitas Negeri Malang Abstract This study aims to determine students critical thinking skills in authentic problem based learning, especially on geometric optics. The study was conducted at vocational school. The study used quantitative descriptive method with open question to measure critical thinking skills. The indicators of critical thinking skills measured in this study are: formulating problems, providing simple answers, applying formulas and procedures, analyzing information, making conclusions, and synthesizing ideas. The results showed that there was a positive change in students critical thinking ability with the average value of N-Gain test is 0.59 and effect size test is 3.73. The critical thinking skills of students need to be trained more intensively using authentic problems in daily life. Topic: Mathematics, Science, and Computer Science Education 118 Effectiveness of the Use of Question-Driven Levels of Inquiry Based Instruction (QD-LOIBI) Assisted Visual Multimedia Supported Teaching Materials on Enhancing Scientific Explanation Ability Senior High School StudentsA Suhandi 1,a), Muslim 1), A Samsudin 1) and N Hermita 2) 1) Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Bandung 40154, Indonesia 2) Program Studi PGSD, Universitas Riau, Pekanbaru 28293, Indonesia a)Email: andi_sh[at]upi.edu Abstract Abstract. In this study, the effectiveness of the use of Question-Driven Levels of Inquiry Based Instruction (QD-LOIBI) assisted visual multimedia supported teaching materials on enhancing high school senior students scientific explanation ability has been studied. QD-LOIBI was designed by following five-levels of inquiry proposed by Wenning.Visual multimedia used in teaching materials included image (photo), virtual simulation and video phenomena. QD-LOIBI assisted teaching materials supported by visual multimedia were tried out on senior high school students at one high school in Bandung district. A quasi-experiment method with design one control group (n = 32) and one experimental group (n = 31) were used. Experimental group were given QD-LOIBI assisted teaching material supported by visual multimedia, whereas the control group were given QD-LOIBI assisted teaching materials not supported visual mulitmedia. Data on the ability of scientific explanation in both groups were collected by scientific explanation ability test in essay form concerning kinetic gas theory concept. The results showed that the increase of scientific explanation ability in the experimental class was higher than in the control class. These results indicate that the use of multimedia supported instructional materials developed for QD-LOIBI implementation can improve students ability to provide explanations supported by scientific evidence gained from practicum activities and applicable concepts, laws, principles or theories. Topic: Mathematics, Science, and Computer Science Education 119 Situation-Based Learning (SBL) Assisted by Geometer’s Sketchpad Program (GSP) for Enhancing Mathematical Representation Ability and Self-Efficacy of Junior High School StudentsSowanto and Y S Kusumah Department of Mathematics Education, STKIP Bima, City of Bima, Indonesia School of Postgraduate Studies, Indonesia University of Education, Bandung, Indonesia Abstract This research was based on the problem of a lack of students’ mathematical representation ability as well as self-efficacy in accomplishing mathematical task. To overcome the problem, this research employed Situation-Based Learning (SBL) assisted by Geometers Sketchpad Program (GSP). This research investigated students’ improvement of mathematical representation ability who were taught under situation-based learning (SBL) assisted by Geometers Sketchpad Program (GSP) and regular method that viewed from the whole students’ prior knowledge (high, average, and low). In addition, this research investigated the difference of students’ self-efficacy after learning was given. This research belongs to quasi-experiment research using nonequivalent control group design with purposive sampling. The result of this research shows that viewed from the whole, students’ enhancement in their mathematical representation ability taught under SBL assisted by GSP is better than under regular method. Also, there is no interaction between learning methods and students prior knowledge in student enhancement of mathematical representation ability. There is a significant difference of students’ enhancement of mathematical representation ability taught under SBL assisted by GSP viewed from students’ prior knowledge. Furthermore, there is no significant difference in terms of self-efficacy between those who are taught by SBL assisted by GSP with regular method. Topic: Mathematics, Science, and Computer Science Education 120 THE DEVELOPMENT OF SMK MATHEMATICS BOOKS AT THREE DIMENSIONAL TOPICS BASED ON THE ABILITY OF MATHEMATICAL AND THINKING HABITS THROUGH METHODS OF GUIDED-DISCOVERYLaelasari, Anggita Maharani, Linda Islami Universitas Pendidikan Indonesia, Universitas Pendidikan Indonesia, Universitas Swadya Gunung Jati Cirebon Abstract We conduct this research to produce mathematics textbook as one of the learning resources for vocational students (SMK) class X. With the view of mathematical understanding and thinking habits ability through guided-discovery method, we want to know the quality of textbook. We choose three-dimensional space as the learning material. We use the Richey and Klein level 1 development model, namely (1) potentials and problems, (2) literature study and information gathering, (3) product design, (4) design validation, and (5) design tested. The population of this study are students of SMK Pharmacy Muhammadiyah Cirebon. The samples are students of SMK Pharmacy Muhammadiyah Cirebon Class X-C. We collect data through questionnaires and interviews. The research result is SMK textbooks on mathematics in three-dimensional topics that match the characteristics of students, basic competence, and 2013 curriculum. The textbook is deal with mathematical understanding and thinking habits ability through guided-discovery methods. The textbook becomes a learning resource for students of SMK class X. Topic: Mathematics, Science, and Computer Science Education 121 Didactital Design of Mathematics Teaching in Primary SchoolE Nur’aeni, M R W Muharram Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi 229, Bandung, Indonesia Abstract The fact that the low ability of geometrical understanding of primary school students is what triggers this study to be conducted. Thus, this research aimed to find out how to create a didactical design of students mathematical understanding, particularly on one of geometry materials that is unit of length. A qualitative approach promoting Didactical Design Research (DDR) was administered in this study. Participants of the study were primary school students in Tasikmalaya, an city in West Java Province, Indonesia. The results show that there was a learning design based on learning obstacles found in the mathematics teaching and learning processes. The learning obstacles comprised students’ difficulties in memorizing, relating, and operating the standards of unit of lengths. It has been proven that the most influential factor in the success of mathematics teaching and learning processes is the use of creative media. Topic: Mathematics, Science, and Computer Science Education 122 Development of STEM Based e-module to Improve Junior High School Students’ Thinking SkillDiana Rochintaniawati, Rika Rafikah, Lilit Rusyati International Progrm on Science Education FPMIPA UPI Abstract In current situation, professional human resources in the fields of science, technology, engineering and mathematics (STEM) are needed to face the era of globalization. Many countries have been accommodated by developing STEM-based learning. In Indonesia STEM-based learning is still in the stage of introduction. The study aims to accommodate STEM – based learning by developing of e- module for science in Junior High school to improve students’ thinking. There are two questions posed in the study: 1) how is the STEM based e-module developed to facilitate science learning? 2) Does the developed STEM e-module improve students’ thinking skills? Research and Development employed in the study and the paper reported limited to the stage of development. The development of STEM based e-module consisted of three stages. First stage was the analysis of science curriculum to determine the topics and sub topics with appropriate for integrated science subject with technology, engineering, and mathematics. The development of the content of each sub topic and determine activities for engineering and mathematics which appropriate with the science for the context were also done in the first stage. The second stage was development of manuscript and the third stage was transferring the manuscript into e-module by using flash. The-e module was then validated to analyze the improving of junior high school students’ thinking skills. The topic of environmental sustainability was chosen for integrated science with the sub topics of water pollution, air pollution and soil pollution. The technology of water purifying was inserted into the water pollution where students were asked to design and construct water purifying as a component of engineering. The calculation to the need of water for human in one area was inserted as a part of mathematics aspects of STEM learning for the content of water pollution. The objective test of thinking skill resulted that the e-module can be used to improved students’ thinking skills in a topic of environment sustainability. Topic: Mathematics, Science, and Computer Science Education 123 THE DEVELOPMENT OF SMK MATHEMATICS BOOKS AT THREE DIMENSIONAL TOPICS BASED ON THE ABILITY OF MATHEMATICAL AND THINKING HABITS THROUGH METHODS OF GUIDED-DISCOVERYLelasari, Anggita Maharani, Linda Islami Universitas Pendidikan Indonesia, Universitas Pendidikan Indonesia, Universitas Swadaya Gunung Jati Cirebon Abstract We conduct this research to produce mathematics textbook as one of the learning resources for vocational students (SMK) class X. With the view of mathematical understanding and thinking habits ability through guided-discovery method, we want to know the quality of textbook. We choose three-dimensional space as the learning material. We use the Richey and Klein level 1 development model, namely (1) potentials and problems, (2) literature study and information gathering, (3) product design, (4) design validation, and (5) design tested. The population of this study are students of SMK Pharmacy Muhammadiyah Cirebon. The samples are students of SMK Pharmacy Muhammadiyah Cirebon Class X-C. We collect data through questionnaires and interviews. The research result is SMK textbooks on mathematics in three-dimensional topics that match the characteristics of students, basic competence, and 2013 curriculum. The textbook is deal with mathematical understanding and thinking habits ability through guided-discovery methods. The textbook becomes a learning resource for students of SMK class X. Topic: Mathematics, Science, and Computer Science Education 124 Student Difficulties in Learning Fractions in Primary School: A Preliminary AnalysisM Mansur (a,b*), Fitri Hilmiyati (a), Rahmadhani Febriana (c) Neni Hermita (d) a) Jurusan Pendidikan Guru Madrasah Ibtidaiyah Fakultas Tarbiyah dan Keguruan Universitas Islam Negeri Sultan Maulana Hasanuddin Banten, Indonesia b) Program Studi Pendidikan Dasar Sekolah Pascasarjana (S3) Universitas Pendidikan Indonesia Bandung, Indonesia c) Alumni Pendidikan Guru Madrasah Ibtidaiyah Fakultas Tarbiyah dan Keguruan Universitas Islam Negeri Sultan Maulana Hasanuddin Banten, Indonesia d) Program Studi PGSD FKIP, Universitas Riau, Indonesia *mansur[at]uinbanten.ac.id Abstract Fractions are an important issue in learning mathematics in primary schools. This preliminary study aims to study the difficulties the difficulties that occurred in fractional learning in elementary school. This study also analyzes the causes of these difficulties. 30 grade IV students were involved in the study. The results of the study of students experiencing difficulties indicate that students have not been able to: 1) determine the location of fractions on the number line, 2) sort the fractions from the smallest to the largest, 3) sort the fractions from the largest to the smallest of the different Denominator, 4) determine the equal fraction, 5) make the number line in comparing the fractions using the sign of more than (>) and less than (<), 6) use the sign of more than (>) and less than (<), 7) determining the final result in answering the matter of simplifying the fractional form to the simplest form, 8) determining the end result of the sum of unequal denominator, 9) determining the final result in answering the problem of fractional subtraction with equal denominator, 10) determining the final result in answering the problem Determining the result of operation of fractions, 11) solving the problem in the form of problem solving related to fractions. The results of further studies indicate that the students difficulties are related to a) students attention to the teacher explanations, b) the lack of media and props in the presentation of the fractional material, and c) Teachers explanation of the number line is not detailed. It can be concluded that there are still many student difficulties in studying fractions in primary school. Further research is needed to address these problems. Topic: Mathematics, Science, and Computer Science Education 125 How to build institutionalization on students: a pilot experiment on didactical design of addition and subtraction involving negative integersNyiayu Fahriza Fuadiah, Didi Suryadi, Turmudi Departement of Mathematics Education, Universitas Pendidikan Indonesia Abstract This study is one of design experiment that focused on the designed of didactical situation in addition and subtraction involving negative integer. As we know that negative numbers become an obstacle for students in solving problems related to it. Therefore, this study was conducted with the aim of creating a didactical design that can assist students in understanding the addition and subtraction easily. Another expected effect in this way, explicitly, students are introduced to the characteristics of addition and subtraction of integers. The design was tested on 32 seventh grade students in one of the classes in a junior secondary school as the pilot experiment. Learning activities were observed thoroughly including students’ responses that emerged during the learning activities. The written documentation of the students was also used to support the analysis in the learning activities. The results of the analysis showed that this method could help students perform a large number of integer operations that could not be done with a number line. Teacher support as an adidactical potential contract was still needed to encourage institutionalization processes. The results of the design analysis used as the basis of the revision are expected to be implemented by the teachers in the teaching experiment. Topic: Mathematics, Science, and Computer Science Education 126 Social Class and Mathematic School KnowledgeMeri Fuji Siahaan Pelita Harapan University Abstract The purpose of this study was to identify school mathematic topics and mathematic learning experiences of two elementary schools in contrasting social class settings under an umbrella of one institution. A case study research methodology was used to examine data collected from those two Elementary schools. The data revealed that there were similarities in curriculum framework and curriculum materials but there were also significant differences in what was taught and what was experienced in those two schools. The data suggested that word problem and a pedagogy of critical thinking were implemented in one of the schools. The differences were assessed in terms of theoretical and social implications. It was concluded that social stratification of mathematical knowledge occurred. Topic: Mathematics, Science, and Computer Science Education 127 Table-Sized Matrix Model in Fractional Learning1) Joko Soebagyo; 2) Endang Cahya 1) Indonesia University of Education, Bandung; College of Technology Wastukancana, Purwakarta 2) )Indonesia University of Education, Bandung Abstract This article introduces a new model of learning the concept/topic of fraction i.e. a Table-Sized Matrix Model in which fractional representation and its operations are symbolized by the matrix. The Table-Sized Matrix Model is an extension of Concrete Pictorial Abstract (CPA), bar model and Singapore Model where CPA and bar model are employed to develop problem solving capabilities as well as the area model introduced by Susan J. Lamon. The Table-Sized Matrix Model referred to in this article is used to develop an understanding of the fractional concept to elementary school students which can then be generalized into procedural fluency (algorithm) in solving the fractional problem and its operation. Topic: Mathematics, Science, and Computer Science Education 128 Enhancement of Problem Solving Ability of High School Students through Learning with Real Engagement in Active Problem Solving (REAPS) Model on the Concept of Heat TransferA Yulindar, A Setiawan, W Liliawati Departement of Physic Education, Indonesia University of Education, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to influence the enhancement of problem solving ability before and after learning using Real Engagement in Active Problem Solving (REAPS) model on the concept of heat transfer. The research method used is quantitative method with 35 high school students in Pontianak as sample. The result of problem solving ability of students is obtained through the test in the form of 3 description questions. The instrument has tested the validity by the expert judgment and field testing that obtained the validity value of 0.84. Based on data analysis, the value of N-Gain is 0.43 and the enhancement of students’ problem solving ability is in medium category. This was caused of students who are less accurate in calculating the results of answers and they also have limited time in doing the questions given. Topic: Mathematics, Science, and Computer Science Education 129 The Concept Analysis Of Bomb Calorimeter Experiment As A Basic For The Development Of Virtual Laboratory And Student Science Process SkillsD R Kurniati and I Rohman Department of Chemistry Education, Universitas Pendidikan Indonesia Abstract The aim of this study was to analyze the characteristics of concepts required in bomb calorimeter experiment. Characteristics of the concepts which analyzed include definitions, attributes, and types of concepts as a basic for the development of virtual bomb calorimeter and student science process skills. The analysis began with determining the essential concepts associated with bomb calorimeter experiment. The method use for analyzing the concept was the concept analysis according to Herron. The results of the analysis show that there are seven concept labels which are essential concepts for developing virtual bomb calorimeter which consist of 14.28% concrete concepts, 42.86% concept that states the size of attributes and 42.86% concept based on principle. While the analysis that related with concept attributes show there are 57.14% concept labels that can be displayed through simulation and 42,86% are shown through animation. Meanwhile, the science process skills that can be developed based on the results of the analysis are the ability to observe, calculate, interpret, ask questions and apply the concept. Topic: Mathematics, Science, and Computer Science Education 130 Development of Performance Assessments instrument senior high school student of practicum the law of conservation mass with self and peer assessment techniqueD.R. Firmansyah, Wiwi Siswaningsih, Nahadi Departement of Chemistry Education, Faculty of Sains and Mathematic education, Indonesia University of Education, Bandung, Indonesia Abstract The purpose of this research is to develop the instrument assessment of the high school students performance assessment in the practice of the law of mass conservation technique on self and peer assessment that have a good quality (validity and reability) and an implementation. The instrument components developed consist of task and rubric. The method that used is development and validation method which is refers and modify from Adams and Wieman (2010) method. Four steps of research are planning, developing, validation, and trials. Planning and developing step is done to know the process of instrument development. The validation step is done to determine the quality of the instrument. The quality of developed instrument have a good content of validity for all items task and rubric.Value of the instrument reability obtained from twice observation that are at four and six students every group with three same observers. That value shows that the instrument is reliable. Optimum amount of the students that can be observed are four students. The trials is done to know the instrument implementation with analyze value correlation pearson and interpret the student questionnaire results. Based on the trials there are similarity in the students’ scores (self and peer assessment) with the observer score because all of the correlation pearson value above the minimum limit which is 0.25. All of the students respond is well to the instrument that used with the interpretation of questionnaire scores >90% or very well category. Topic: Mathematics, Science, and Computer Science Education 131 Development of self and peer assessment instrumnet for assessing vocational senior high school students performance on iodometric titration practicumHesti Kusumaningtyas, Wiwi Siswaningsih, Nahadi Departement of Chemistry Education, Faculty of Sains and Mathematic education, Indonesia University of Education, Bandung, Indonesia Abstract The aim of this study are to develop a valid and reliable performance assessment in the form of task and rubric that students can use to assess their own performance or assess the performance of other student on iodometric titration practicum, and to know the implementation of self and peer assessment using the developed performance assessment instrument. This study uses a method that refers to the development and validation method used by Adam and Wiemans (2010) with 24 second-grades vocational high school in chemical analysis field as the participants. The development performance instrument refers to the step of developing performance assessment according to Harsh (2016). Test result of content validity based on judgment expert show that the developed performance assessment instrument is included in the valid criteria on each task. Test result of the developed performance assessment reliability is also include in the reliable criteria against two and four students.The implementation of self aassessment by student using the developed performance assessment instrument is included in enough category, while the implementation of peer assessment by student is included in very well category. That implementation developed performace assessment result is known by the analyze of the pearson correlation value. Topic: Mathematics, Science, and Computer Science Education 132 The Initial Profile of Students’ Hypothetic-Deductive Thinking Competence in School Physics CourseU Purwana1, Liliasari2, and D Rusdiana1 1Department of Physics Education, Faculty of Mathematics and Natural Sciences Education, 2Department of Chemistry Education, Faculty of Mathematics and Natural Sciences Education Graduate School Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi 229 Bandung 40154 Jawa Barat Indonesia Abstract Abstract. Learning outcomes target, among others, include knowledge, and reasoning. Reasoning is a part of thinking which apply in scientific inquiry and known as scientific reasoning. The competencies of scientific reasoning include the conservation of matter and volume, proportional thinking, identification and control of variables, probabilistic thinking, correlative thinking, and hypothetical deductive thinking. Scientific reasoning competence must be owned by prospective teachers in LPTK in order to be a critical thinker and an effective problem solver. This research is a series of research that aims to develop innovative learning model as a vehicle to trace and develop the competence of knowledge and students scientific reasoning simultaneously in the School Physics course. The specific objective of this initial research was to measure base-line competence in the highest category of scientific reasoning, which is the hypothetic-deductive thinking aspect of 25 students in the School Physics course in 2016/2017 academic year. A modified of Lawsons Classroom Test of Scientific Reasoning (LCTSR) and interview guidelines used as the instrument of this research. The results showed that the students initial competence in scientific reasoning on the aspect of the hypothetic-deductive is in the less category. Students are generally able to interpret the facts presented, but have difficulties in understanding general theory related to the facts, determining alternative hypotheses, and determining alternative experiments that should be designed to test the hypothesis. Topic: Mathematics, Science, and Computer Science Education 133 Science Literacy Profile of High School Students on Fluid DynamicsParno*, L Yuliati, N Munfaridah Physics Department, Universitas Negeri Malang, Jl. Semarang No.5 Malang, 65145, Indonesia Abstract This study aims to describe the profile of science literacy of high school students on Fluid Dynamics materials. Science literacy is one of the ability to solve daily problems in accordance with the context of materials related to science and technology. The study was conducted on 90 high school students in Sumbawa using survey design. Data were collected using an instrument of science literacy for high school students on dynamic fluid materials. Data analysis was conducted descriptively to determine the students profile of science literacy. The results showed that high school students science literacy on Fluid Dynamics materials was in the low category. The highest average is obtained on indicators of science literacy i.e. the ability to interpret data and scientific evidence. The ability of science literacy is related to the mastery of concepts and learning experienced by students, therefore it is necessary to use learning that can trace this ability such as Science, Technology, Engineering, Mathematics (STEM). Topic: Mathematics, Science, and Computer Science Education 134 Learning Basic Programming by Using CLIS through GamificationFitry Rahmah, Harsa Wara Prabawa, Heri Sutarno, Jajang Kusnendar Universitas Pendidikan Indonesia Abstract The difficulty of understanding the concept of programming is a major problem in basic programming lessons. Based on the results of preliminary studies conducted, 60% of students said partly caused by the limited media used in learning and learning tend to be monotonous. The solution of the Children Learning In Science (CLIS) method was chosen because CLIS has facilitated the initial knowledge of the students to be optimized into conceptual knowledge. Technological involvement in CLIS (in the form of gamification) is support so that students can more easily understand basic programming concept knowledge. This research developed a media based on CLIS method with the addition of gamification elements in it with the aim of increasing the excitement of the learning process. This research provides information that the multimedia is considered good by students, especially regarding the mechanical aspects of multimedia, multimedia elements and aspects of multimedia information structure. Multimedia gamification learning with the CLIS model provides increased understanding of concepts in students with the greatest increase in the upper classes and the increase is largely due to the presence of instructional media. Topic: Mathematics, Science, and Computer Science Education 135 IMPLEMENTATION OF COOPERATIVE SCRIPT BASE ON MULTIMEDIA INTERACTIVE LEARNING TO IMPROVE UNDERSTANDING OF NETWORK TOPOLOGY FOR VOCATIONAL HIGH SCHOOL CLASS XIhsan Ismail Zainuddin, Drs Eka Fitrajaya R M.T, Dr Dedi Rohendi M.T PROGRAM STUDI PENDIDIKAN ILMU KOMPUTER DEPARTEMEN PENDIDIKAN ILMU KOMPUTER FAKULTAS PENDIDIKAN MATEMATIKA DAN ILMU PENGETAHUAN ALAM UNIVERSITAS PENDIDIKAN INDONESIA Abstract This research have 3 goals: a) to improve understanding of students at the vocational secondary school on the material TKJ (Teknik Komputer Jaringan), b) how to improve the ability of understanding the student that lesson using cooperative script, c) how the respons of students with learning method of cooperative script, while the population students of clas X majors SMK Medikacom Bandung as much as 30 people, knowing the response or reaction students about expediency use of learning multimedia by applying methods cooperative script on the subjects network topology. Based on the result of research obtained by the result data from a multimedia interactive learning research obtained from question form and validation experts comprised of expert media validation, the material to the lecturer, and students assesment question form toward learning multimedia interactive with a method cooperative script from this research obtained results : 1) top media expert assessment interactive multimedia with a method cooperative script with 88,09% and categorized good and expert material over interactive multimedia with the method of cooperative script is 82,89%. Enter into the category of ‘good’ heading into the category of ‘very good’ worth it used to learning in the classroom. 2) students giving response was positive about interactive multimedia learning with a method cooperative script can be concluded can give impact on understanding of college student. Seen from the existence value of fains acquired means 0,45 included in the criteria are in improving understanding of students. It also can be seen from the acquition of students. It also can be seen from the acquistion of inquiries 86,57% student respons is includes in the category either. Topic: Mathematics, Science, and Computer Science Education 136 Profile of Students’ Level of Understanding and Model Mental on Hydrostatistic’s Law ConceptP. Zakiyatul Jannah(1*), T. Ramlan Ramalis(2), A. Setiawan(3) (1) Universitas Pendidikan Indonesia *putryscientist[at]gmail.com (2) Department of Physics Education, Sekolah Pasca Sarjana Universitas Pendidikan Indonesia Abstract This study was conducted to determine the students’ level of understanding on Hydrostatistic’s laws concept and relating these levels to identify students’ model mental. An achievement test composed of two parts comprising 8 open-ended question was constructed and given to 31 students of senior high school. The first part of the test included 2 open-ended questions for each law asking students to explain a case, determine the physics law related to the case and write a case suitable for the related law. The second part was composed of three questions about defining Hydrostatistic’s laws concept. The data analysis was carried out in two stages. In the first stage, the analysis of understanding level showed that students were relatively successful at explaining a case about Hydrostatistic’s laws concept. However, their achievement in defining these laws was low. In the second stage, the analysis of model mental was classified into three levels i.e scientific, synthetic, and initial. The result showed that the students have significanr weaknesses in understanding the terms of fundamental knowledge of Hydrostatistic’s laws concept. This may stem from the lack of students to relate scientific knowledge with real life phenomena and experiences. Another result of this study is that defining the level of understanding students can help educators to prepare and implement teaching activities more effectively to promote students’ thingking, discussing and interpreting skills. Topic: Mathematics, Science, and Computer Science Education 137 Theme networking in the thematic learningNurul Ain Universitas Kanjuruhan Malang, Indonesia Abstract Theme networking is a concept map that describes the linkage between the theme/ subtheme with the subject matter or the activities of some subjects. This linkage at the thematic learning on Curriculum 2013 in Indonesia, is expressed by linking subthemes with the basic competencies of some difference subjects, called the basic competence networking. The purpose of this study is to analyze whether the basic competence networking is related to the theme/subtheme. The research method used is evaluative research. Evaluation is done in the fourth grade thematic guide books for teacher of elementary schools on the theme "Care for Living Thing”, the subtheme "Lets Love our Environment". Analysis of the data is done by analyzing the relevance of each basic competence on the integrated subjects with the theme/subtheme. Based on the results of the study, it can be concluded that the linkage between subtheme with each subject is more visible if the material or learning activities are integrated with subtheme. The results of the study were made references by teachers, researcher, and curriculum developers to design the theme networking in thematic learning. Topic: Mathematics, Science, and Computer Science Education 138 The Relationship among Critical Thinking Skill Measured By Science Virtual Test, Gender, and Motivation in 9th Grade StudentsR Auliya U.I. Fernandi (a*), Harry Firman (b), Lilit Rusyati (a) (a) International Program on Science Education Department, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia *r.auliya.ulul[at]student.upi.edu (b) Chemistry Education Department, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia Abstract The purpose of this study was to identify the relationship among critical thinking skill, gender and motivation in 9th grade Junior High School in Kuningan. This descriptive study used purposive sampling that comprise 110 ninth grade students which taken from three junior high school that has good computer literacy, use 2013 curriculum, and include to the types of school based on the quality of national education standard. The data were obtained through Science Virtual Test on living things and environmental sustainability theme and science motivation questionnaire (SMQ). Female students scored highest on generating purpose skill (M = 73.81), while male students perform better on generating implication and consequences skill (M = 78.01) where both groups differ significantly (p = 0.011). Students scored highest on generating purpose skill for high and moderate motivation group, while for the lowest score, moderate and low motivation group perform it on making assumption skill. Additionally some critical thinking elements differ significantly by motivation to learn science. There was no correlation between critical thinking and motivation (r = 0.155, p > 0.05). The finding indicated that students’ critical thinking is not differ in gender and does not affected by motivation to learn science. Topic: Mathematics, Science, and Computer Science Education 139 The Validation of Science Virtual Test to Assess 7th Grade Students’ Critical Thinking on Matter and Heat Topic (SVT-MH)Yustika Syabandari, Dr. Harry Firman, M. Pd., Lilit Rusyati, M.Pd. IPSE FPMIPA Universitas Pendidikan Indonesia Abstract Teaching critical thinking at schools is the main topics in the discussion regarding 21st Century skills. An efficient way to improve the quality of education in critical thinking is developing the better tests. This better test is resulted from the validation of the test. The author intended to validate the multiple-choice questions that indicate the elements and sub-elements of critical thinking on matter and heat topic that implements computer-based test which is further called as SVT-MH (Science Virtual Test Matter and Heat). The method used in this research was descriptive research for profiling the validation of SVT-MH to measure students’ critical thinking on matter and heat topic in junior high school. The subject is junior high school students of 7th grade (13 years old) while science teacher and expert as the validators. The instrument that used as a tool to obtain the data are rubric expert judgment (content, media, education) and rubric of readability test. There are four steps to validate SVT-MH in 7th grade Junior High School. These steps are analysis of core competence and basic competence based on curriculum 2013, expert judgment (content, media, education), readability test and trial test (limited and larger trial test). The instrument validation resulted 30 items that represent 8 elements and 21 sub-elements to measure students’ critical thinking based on Inch in matter and heat topic. The alpha Cronbach is 0.642 which means that the instrument is sufficient to measure students’ critical thinking matter and heat topic. Topic: Mathematics, Science, and Computer Science Education 140 THE IMPROVEMENT OF MATHEMATICALLY ANALOGICAL REASONING ABILITY OF THE UNIVERSITY STUDENTS THROUGH CONCEPT ATTAINMENT MODEL.Lilis Marina Angraini, Yaya S. Kusumah, Jarnawi A. Dahlan. Universitas Pendidikan Indonesia Abstract This study examined to see the improvement of mathematically analogical reasoning ability of the university students through concept attainment model learning based on overall and early mathematically ability (KAM) and interaction of both. Quasi experiments with the design of this experimental-controlled equivalent group involved 54 second semester students at the State Islamic University. The instrument used is pretest-postest. Kolmogorov-Smirnov test, Levene test, t test, two ways ANOVA test were used to analyse the data. The result of this study are: (1) The improvement and achievement of the mathematically analogical reasoning ability of the students who get the learning of concept attainment model is better than the improvement and the achievement of the mathematically analogical reasoning ability of the students who get the conventional learning as a whole and based on KAM; (2) There is no interaction between the learning used and KAM on improving and achieving mathematically analogical reasoning ability. Topic: Mathematics, Science, and Computer Science Education 141 DESIGN OF CAPABILITY MEASUREMENT INSTRUMENTS PEDAGOGIC CONTEN KNOWLEDGE (PCK) FOR PROSPECTIVE MATHEMATIC TEACHERSNeneng Aminah, Ika Wahyuni Universitas Swadaya Gunung Djati Abstract One of the determinants of success in the learning process is a teacher, where the teacher must have the material ability (content knowledge), and the pedagogical knowledge (pedagogic knowledge). Those deep knowledge are alloyed in the proper way of teaching called by Shulman ( Ball, Thames, & Phelps, 2008) as pedagogical content knowledge. Unswagati as one of the private LPTKs in Cirebon that has a mathematics education program, which will give birth to a mathematics teacher candidate, to produce professional candidates many ways that have been taken either the curriculum improvements, aspects of teaching, as well as on aspects of research. In the curriculum aspect, there was a revision at the time of semester six students are required to participate in the Basic Teaching and Learning of Basic Microstructure which aims to train students to be able to teach in the classroom using simulation in micro laboratory. Usually to measure the ability of the lecturer using measuring instrument in the form of observation sheet. Although the current observation sheet only reflects the basic skills of teachers teaching skills in classroom management, it does not yet detail the existing aspects of Pedagogical Content Knowledge (PCK) in accordance with the teachers demand based on the curriculum of 2013. Due to this, Several studies to find out how the process of designing a tool for measuring the ability of Pedagogical Content Knowledge (PCK), especially for prospective math teachers are valid and practical. This measurement tool design study was the Plomp development step in the modification which was divided into several stages . This initial stage is designed instrument, in this stage the activities are: (1) review the related theories, (2) assess the PCK related indicators, and (3) assess the needs of teachers related to the applicable curriculum. The discussion above shows that the validation process of PCK instrument design has fulfilled the content validation and construct validation. This states that the developed PCK instrument has been valid and practical. Topic: Mathematics, Science, and Computer Science Education 142 A study of primary school teachers’ conceptual understanding on states of matter and their changes based on their job locations (Case study at ambon island in moluccas-indonesia)A Banawi1,2, W Sopandi3, A Kadarohman4, and M Solehuddin5 1 A Student at Elementary Education Study Program of Post Graduate School, UPI (Indonesia University of Education), Dr. Setiabudi Street Number 229, Bandung 40154, Indonesia 2 Institute of Islamic State Ambon, Dr. H. Tarmizi Taher Street, Ambon 97128, Moluccas, Indonesia 3 Elementary Education Study Program of Post Graduate School, UPI, Bandung 40154, Indonesia 4 Science Education Study Program of Post Graduate School, UPI, Bandung 40154, Indonesia 5 Elementary Education Study Program of Post Graduate School, UPI, Bandung 40154, Indonesia Abstract Abstract. The research aims to describe primary school teachers’ conceptual understandings about states of matter and their changes. The method was descriptive which involved 15 primary school teachers from three different school locations. They were from urban school (CS1), sub-urban school (CS2), and rular school (CS3) at Ambon Island on 2016/2017 academic year. The research instrument was a multiple-choice test that was combined with both essay and confidence level of their answers. The test was used to measure teachers’ understanding levels about states of matter and their changes. They were macroscopic, sub-microscopic and symbolic levels. Teachers’ understanding levels were classified into following categorization, they were understand, partly understand, misconception, and do not understand. The results show that primary school teachers’ conceptual understanding is varied based on their job locations and primary school teachers’ level understanding. Generally, primary school teachers’ conceptual understand at sub-urban location (CS2) are better than both of urban (CS1) and rular locations (CS3). The results suggest that teachers need improvement to make better primary school teachers’ conceptual understanding. It can be on the job training and in service training activities. We also need a further research in order to investigate the program effectiveness. Topic: Mathematics, Science, and Computer Science Education 143 The Attitude of Risk Taking Islamic Junior High School (MTs) Students in Learning MathematicsYatha Yuni1), Darhim1), Turmudi1) 1)Departement of Mathematics Education School of Post Graduate Studies Indonesia University of Education Bandung, West Java, Indonesia Abstract Abstract. This study aims to determine the risk-taking attitude of students at Islamic Junior High School (MTs) in Bekasi towards learning mathematics. This is a preliminary research to get information about risk taking attitude in order to conduct next research. Data are obtained by providing questionnaires of 20 indicators point declaration which includes be careful in act, having peace of mind, resolute in making decisions and confident in the act. Respondents are as many as 97 students of 7th grade students of MTs and taken with random techniques from two MTs in the city of Bekasi. The research instrument was adopted from DOSPERT developed by Weber, Blais, & Betz (2002), adapted to the ability of 7th grade students of MTs. The attitude of risk taking is part of the students responsibility attitude to the learning of mathematics, either during preparation, process or after learning mathematics. The attitude of risk taking is important to know in order to be trained continuously. Because the trained attitude of risk taking will make students succeed in learning and working later. Topic: Mathematics, Science, and Computer Science Education 144 Needs Analysis in The Development of Mathematics Instructional Materials Constructivist Approach Through Mobile Learning SystemYusri Wahyuni and Rieke Alyusfitri Bung Hatta University Abstract This study aimed to analyze the problems, needs, and characteristics of students in developing teaching materials with constructivism approach through a Mobile Learning System. The development method used follows the 4-D model consisting of define stage, design stage, develop stage and disseminate stage. This study focused on the first stage which is define stage. Subjects of this study are students of mathematics education program on Bung Hatta University year of 2015 consisting 26 pupils. Data collection technique was done through syllabus analysis, source book analysis used in relation with the material, and interview with some students of mathematics education program of Bung Hatta University year of 2015. The result of the analysis shows that mathematics education students need teaching materials with constructivism approach. The conclusion of the research at this define stage that textbooks used by lecturers and the way of delivery of materials causing students misunderstand the subject. Students also need instructional materials in accordance with the characteristics of students, for that this research will be doneat the design stage of teaching materials with constructivism approach. Topic: Mathematics, Science, and Computer Science Education 145 Ethno-mathematics Exploration at Gonjong Rumah Gadang in South Solok Regency of West SumatraFauziah, Niniwati University of Bung Hatta Abstract This study aims at analyzing the ethno-mathematics’ exploration for basic information in the development of ethno-mathematics. Type of this research is exploratory excavation that is conducted through exploratory research on the cultural phenomenon. The method of this research is through valid interviews via questionnaire and data processed via taxonomic analysis. Taxonomic analysis was done to create categories of cultural symbols that exist in the studied culture. The research was conducted in South Solok with the object of research is the shape of carvings and the number of gonjong from rumah gadang. From the data analysis, the result obtained that South Solok has various types of rumah gadang; 62.96% types of surambi Aceh begonjong ciek, 25.93% types of gajah maharam, 7.41% types of gonjong ampek sibak baju. For two existing sub-districts in South Solok such as Nagari Sitapui and Nagari Abai;almost all of the types are symmetrical while the others are various. Overall, there are 74.07% symmetrical shape and 25.93% are not symmetrical. The amount of gonjong in south Solok based on Mathematics’ theory of even and odd numbers; there are 51.85% for odd gonjong and 48.15% for even gonjong. Topic: Mathematics, Science, and Computer Science Education 146 The Optical Characteristic, Crystal Structure and Crystal Shape of ZnO Nanopartiles Synthesized by use of HydrothermalTogar Saragi, Yonathan R Purba, Satria Auffa D U, Maria Octaviani, Edward Simanjuntak*, Tuti Susilawati, Risdiana, and Ayi Bahtiar Department of Physics, Padjadjaran University, Jl. Raya Bandung-Sumedang Km. 21 Jatinangor, Indonesia *Politeknik Negeri Bandung, Jl. GegerkalongHilir, Ds. CiwarugaKotakPos 1234 Bandung 40012, Indonesia Abstract Zinc oxide (ZnO) nanoparticles were successfully prepared with different synthesis conditions by hydrothermal method in order to investigate the impact of controlling pH to their optical properties, morphology and crystal structure. Zinc acetate dehydrate (C4H6O4Zn.2H2O), sodium hydroxide (NaOH), ethanol (ethyl alcohol) and n-hexane were used for the synthesis. The synthesis of particles was carried out in pH’s solutions of 10 and 12. , while the growth temperatures were set at 100C for 5h, 10h, 15h, 20h and 25h. The sample growing at pH=12, 100C for 5h have oval form in the size of 14 nm, while the band gap estimated from UV-Vis spectra was observed in the value of 3.14 eV. The sample growing at pH=10, 100C for 5h have rod form in the size of 15 nm ×21 nm, with band gap of 3.23 eV. From XRD measurement, it was observed that samples grown in all temperatures have hexagonal wurtzite structure and all peaks are well fitted with JCPDS:36-1451 data. The growth condition of 100C, pH = 10 for 5 h resulted the best sample with high quality crystal structure, rod form and highest band gap Topic: Mathematics, Science, and Computer Science Education 147 Learning Trajectory and Didactical Design of Trigonometric Concepts and Trigonometric Equations Formulated by Learning ObstaclesElah Nurlaelah1,a), Dara Nurul Istiqomah2,b) 1Departemen Pendidikan Matematika FPMIPA Universitas Pendidikan Indonesia Jl. Dr. Setiabudhi No.229 Bandung 40154, Indonesia 2SMA Negeri 4 Bandung Jl. Gardu Jati No... Bandung, Indomesia Abstract Learning Trigonomtery concept sometimes cause difficulties for students, especially on the application of the concept in other concepts of mathematics or in the application in everyday life. What are the learning obstacles faced by students in learning the concept and how to overcome it ?. Based on a study of 36 high school students of class X, it was found that students got learning obstacle related to the existing concept image of trigonometric equations, learning obstacle related to the context of variation of available information, and Learning obstacle related to connection concept of trigonometric equation with other concept of mathematics. To overcome these difficulties before the teaching and learning will be conducted theteachers should arrange learning trajectory and didactical design for Trigonometry concept. Topic: Mathematics, Science, and Computer Science Education 148 IMPROVING STUDENTS’ CREATIVE THINKING SKILL THROUGH LOCAL MATERIAL-BASED EXPERIMENT (LMBE) ON PROTEIN QUALITATIVE TESTFlorentina Maria Titin Supriyanti (a*), Heli Siti Halimatul Munawaroh (a) a)Departmen Pendidikan Kimia, Universitas Pendidikan Indonesia *florentinasupriyanti[at]yahoo.co.id Abstract The need to develop creative thinking skills in educational process brings attention, since it considered as one of the key competencies that allow student to deal with the opportunities and challenges in global era. The main objective of this current research is to enhance chemistry students’ creative thinking skills using material from local resources on protein qualitative test experiment (LMBE). In this research study, a descriptive method using one group pretest-postest design was carried out on the effectiveness of local material-based experiment approach. Undergraduate students (N=18) who were attending Biochemistry Experiment courses, participated in the qualitative protein analysis experiment using local material. The data was collected using instrument test consists of five assay test and student work sheet (LKM).The effectiveness of the local material-based experiment was tested by means of percentage of normalized gain and score percentage of students’ worksheet. Comparison of creative thinking skills pretest and postest scoress showed that the implementation of local material-based experiment enhanced students’s creative thinking skills with the value of normalized gain (=0,77) was categorized as high. In addition, the LKM was shown the enhancements of all aspect of creative thinking skills, including fluency, flexibility, and elaboration skills with the score is 85, 96, and 96, respectively. This current findings suggest that the LMBE in Biochemistry experiment could be implemented to facilitate students’ creative thinking skills. Topic: Mathematics, Science, and Computer Science Education 149 Didactical Design of Critical Thinking Skill for Primary SchoolM R W Muharram, Al Jupri Sekolah Pascasarjana UPI, Jl. Dr. Setiabudhi 229, Bandung, Indonesia Abstract Critical thinking is expected to be mastered by students. But in fact, critical thinking has not been optimized well. Thus, this research aimed to determine the students’ learning obstacles, especially, volume of cuboid on geometry materials. Didactical Design Research (DDR) was used in this research. DDR consists of three phases: 1) analysing of didactical situation; 2) Metapedadidactical Analysis; and 3) Restropective analysis. Participants were primary school students in Tasikmalaya, Indonesia. Learning obstacles was found in the mathematic teaching and learning processes. The learning obstacles consist of students’ difficulties in use mathematical concept to mathematical models, use mathematical concept to life, and use topics in students’ life. Topic: Mathematics, Science, and Computer Science Education 150 THE COMPARISON BETWEEN SCIENCE VIRTUAL AND PAPER-BASED TEST IN MEASURING GRADE 7 STUDENTS’ CRITICAL THINKINGPutra Habib Dhitareka, Lilit Rusyati, M.Pd., Dr. Harry Firman, M.Pd. International Program on Science Education (IPSE) Abstract This research was comparing science virtual and paper-based test in measuring grade 7 students’ critical thinking based on Multiple Intelligences and gender. Quasi experimental method with within-subjects non-experimental design was conducted in this research in order to obtain the data. The population of this research was all seventh grade students in ten classes of one public secondary school in Bandung. There were 71 students within two classes taken randomly became the sample in this research. The data are obtained through 28 questions with a topic of living things and environmental sustainability that constructed based on eight critical thinking elements proposed by Inch and then the questions provided in science virtual and paper-based test. The data was analysed by using paired-samples t test when the data are parametric and Wilcoxon signed ranks test when the data are non-parametric. In general comparison, the p-value of the comparison between science virtual and paper-based tests’ score is 0.506, indicated that there are no significance difference between science virtual and paper-based test based on the tests’ score. Furthermore, the Asymp. Sig. Values resulted from the comparison based on Multiple Intelligences are 0.935 for naturalist, 0.074 for musical, 0.654 for logical, 0.877 for existential, 0.329 for interpersonal, 0.129 for kinesthetic, 0.055 for verbal, 0.781 for intrapersonal, and 0.722 for visual intelligences, thus indicated that there is also no significance difference between science virtual and paper-based test based on students’ Multiple Intelligences. Moreover, the p-values resulted from the comparison based on gender are 0.758 for male and 0.540 for female, this is also indicated that there is no significance difference based on gender. The results are furthermore supported by the students’ attitude result which is 3.15 from the scale from 1 to 4, indicated that they have positive attitudes towards science virtual test. Moreover, teachers involved in this research were interviewed to know how their perspectives towards science virtual test is, and they agree that computer-based test like science virtual test are far beyond the limitation of paper-based test and expected similar test to be implemented as the common assessment tool as it provides many advantages. Topic: Mathematics, Science, and Computer Science Education 151 The Relationship between Students Critical Thinking Measured by Science Virtual Test and Students Logical Thinking on Eighth Grade Secondary SchoolRiana Nurismawati, Yayan Sanjaya, Lilit Rusyati Universitas Pendidikan Indonesia Abstract The aim of this study is to examine the relationship between students’ critical thinking skill and students’ logical thinking skill of Junior High School students in Tasikmalaya city. The respondent consists of 168 students from eighth grade at three public schools in Tasikmalaya CIty. Science Virtual Test and Test of Logical Thinking were used in this research study. Science virtual test instrument consist of 26 questions with 5 different topics. IBM SPSS 23.00 program was used for analysis of the data. By the findings; students’ critical thinking skill has significant differences in elements of generating purpose, embodying point of view, utilizing concept and making implication and consequence. By Post Hoc LSD Test, from those four elements, there are significant differences between concrete - transitional groups and transitional – concrete groups. There is positive and weak correlation between students’ critical thinking and students’ logical thinking attainment. Topic: Mathematics, Science, and Computer Science Education 152 Thinking Process of Students’ Higher Order Thinking Skill Based on the Revised Bloom’s Taxonomy Criteria in Mathematics Collaborative LearningDian Kurniati; Dinawati Trapsilasiwi Mathematics Education Study Program, Faculty of Teacher Training and Education, University of Jember Abstract The research aims to describe the thinking process of student’s higher order thinking skill based on the revised Bloom’s taxonomy during mathematics collaborative learning. Indicators of the higher order thinking skill were analyze (C4), evaluate (C5), and create (C6). Research subjects were 71 Junior High School students in Jember Regency, East Java, Indonesia. Stages of this research referred to the stage of qualitative content analysis methods, namely (1) implementing the collaborative learning, (2) giving test, (3) analyzing of the students’ answer based on higher order thinking skill criteria, (4) doing in-depth interview. Based on data analysis and discussion, it can be concluded that were 14 students at create criteria, 39 students at evaluate criteria, and 18 students at analyze criteria. The students who have an analyze skill tended to describe the conceptual parts of the given problems, while the students who have an evaluate skill tended to describe, distinguish, and interpret from the given problems. Furthermore, the students who have a create criteria tended to find the new idea through the continuous discovery. Topic: Mathematics, Science, and Computer Science Education 153 DEVELOPMENT OF 4 C’S INDICATORS THAT ALIGNED WITH CURRICULUM 2013 ON THE MATHEMATICS SUBJECT OF THE GRADE JUNIOR HIGH SCHOOLSunardi; Dian Kurniati; Siska Rahmawati; Syahdinar Indriawati Amaliyah; Debby Octaerdiyani University of Jember Abstract The purpose of this research is to describe the development process and produce 4Cs indicators that aligned with Curriculum 2013 on Mathematics subjects of the grade Junior High School. The materials used are the material of the first semester on 7^st grade, the first semester on 8^st grade and the first semester on 9^st grade. The developed indicators refer to the skills of the century P21. The key skills to be had in the context of the 〖21〗^stcentury are learning and innovation skills, skills in media control, information, and technology, and life skills and careers. According to P21, 4Cs developed ability is critical thinking, creative, communication and collaboration. Reasearch type which is used in modified Plomp’s development model consisting of 4 phases which are preliminary investigation, design phase, realization / contruction phase, and test, evaluation and revision phase. The instrument used is the validation of 4Cs indicators that aligned with the Curriculum 2013. The process of data collection is done through product validity test to some validator. The result of the development of 4Cs indicators has a coefficient validity in the valid category, because the coefficient obtained more than 3.00. Then the development of 4Cs indicators that aligned with Curriculum 2013 on mathematics subjects of the Junior High Schools has met the criteria of validity and can used in teaching and learning activities. Topic: Mathematics, Science, and Computer Science Education 154 Analysis of Chemical Concepts as the Basic of Virtual Laboratory Development and Process Science Skills in Solubility and Solubility Product SubjectRirin Syafrina, Ijang Rohman, Galuh Yuliani Departemen of Chemistry, Indonesia University of Education, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to analyze the concept characteristics of solubility and solubility products that will serve as the basis for the development of virtual laboratory and students science process skills. Characteristics of the concepts analyzed include concept definitions, concept attributes, and types of concepts. The concept analysis method uses concept analysis according to Herron. The sample used is a high school textbook that is used in school according to the Curriculum 2013. The results of the concept analysis show that there are twelve chemical concepts that become the prerequisite concept before studying the solubility and solubility and five core concepts that students must understand in the solubility and Solubility product. As many as 58.3% of the definitions of the concepts contained in high school textbooks support students science process skills, the rest of the definition of the concept is memorized. Concept attributes that meet three levels of chemical representation and can be poured into a virtual laboratory have a percentage of 66.6%. Type of concept, 83.3% is a concept based on principle; And 16.6% concepts that state the process. Meanwhile, the science process skills that can be developed based on concept analysis are the ability to observe, calculate, measure, predict, interpret, hypothesize, apply, classify, and inference. Topic: Mathematics, Science, and Computer Science Education 155 Students Impression towards Science Virtual Test (SVT) on Digestive System TopicC Mahfira1, Y Sanjaya2, L Rusyati1 1International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia 2Biology Education Department, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia Abstract During the past few years, technology has significantly support the improvements in assessment.Computer Based test comes up as a new type of assessment which offers many benefits. The implementation of computer-based test in term of students’ perspective gives rise to numbers of mixed reactions. Students’ impression is one of the essential things for the implementation of science virtual test. The purpose of this study was to investigate the impression of 8th grade students toward science virtual test. The method used in this research was descriptive method. The participant was 98 students from Junior High School “X” in East Bandung. Students’ impression questionnaire was used as the instrment. There are four aspects tested in this instrument whic are students’ experience, technical activity, preference and media of Science Virtual Test. The result shows that Science virtual Test generally gives positive impression to 8th grade students. Students have a positive experience and did not encounter significant problem when implementing Science Virtual Test. Students prefer to use Science Virtual Test and students think the media of Science Virtual Test is already good. Topic: Mathematics, Science, and Computer Science Education 156 Preliminary Development of POEAW in Enhancing K-11 Students Understanding Level on Impulse and MomentumT A Luthfiani, P Sinaga, A Samsudin Magister Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229 Bandung, Indonesia 40154 Abstract We have been analized that there were limited research about Predict-Observe-Explain which use writing process with conceptual change text strategy. This study aims to develop a learning model namely Predict-Observe-Explain-Apply-Writing (POEAW) which is able to enhance students’ understanding level. The research method utilized the 4D model (Defining, Designing, Developing and Disseminating) that is formally limited to Developing Stage. There are four experts who judge the learning component (syntax, lesson plan, teaching material, student worksheet) and matter component (learning quality and content component). The result of this study are obtained expert validity test score average of 87% for learning content and 89% for matter component that means the POEAW is valid and can be tested in classroom learning. This research producing POEAW learning model that has five main steps, Predict, Observe, Explain, Apply and Write. To sum up, we have early developed POEAW in enhancing K-11 students’ understanding levels on impulse and momentum. Topic: Mathematics, Science, and Computer Science Education 157 Problem Based Learning: The Effect of Real Time Data on the Website on Student IndependenceI Setyowidodo1,2,a), Y S Pramesti1, A D Handayani1, and A Shofwan3 1) Universitas Nusantara PGRI Kediri, Jl. K.H Ahmad Dahlan No.76, Kediri 64112, Indonesia 2) Universitas Negeri Surabaya, Jl. Ketintang, Surabaya 60231, Indonesia 3) Madrasah Tsanawiyah Negeri Puncu, JL. Pare – Wates, Kediri 64292, Indonesia a)E-mail: irwansetyo[at]unpkediri.ac.id Abstract Learning science developed as an integrative science rather than disciplinary education, the reality of the nations character development has not been able to form a more creative and independent Indonesian man. Problem Based Learning based on real time data in the website is a learning method focuses on developing high-level thinking skills in problem-oriented situations by integrating technology in learning. The essence of this study is the presentation of authentic problems in the real time data situation in the website. The purpose of this research is to develop student independence through Problem Based Learning based on real time data in website. The type of this research is development research with implementation using purposive sampling technique. Based on the study there is an increase in student self-reliance, where the students in very high category is 47% and in the high category is 53%. This learning method can be said to be effective in improving students learning independence in problem-oriented situations Topic: Mathematics, Science, and Computer Science Education 158 Nutrition Literacy Program for Improving Public WellnessChaerul Rochman 1,a), Imelda Helsy 2), Dindin Nasrudin1), Wahyudin Darmalaksana3) and Neni Hermita4) 1,3Program Studi Pendidikan Fisika, UIN Sunan Gunung Djati Bandung, Jl. A. H. Nasution 105 Bandung, Indonesia, 40614 2)Program Studi Pendidikan Kimia, UIN Sunan Gunung Djati Bandung, Jl. A. H. Nasution 105 Bandung, Indonesia, 40614 3)Lembaga Penelitian dan Pengabdian pada Masyarakat, UIN Sunan Gunung Djati Bandung, Jl. A. H. Nasution 105 Bandung, Indonesia, 40614, 4)Program Studi Pendidikan Guru Sekolah Dasar, Universitas Negeri Riau, Jl. Binawidya Km. 12.5, Simpang Panam,Pekanbaru 28293 Riau,Indonesia, Abstract This study aims to describe the scientific concept and the relationship between scientific literacy level and wellness quality of public through Nutrition Literacy Program (NLP). The characterization of scientific concept on the Nutrition Literacy Concept is obtained from the identification of scientific concepts on the material and the educational process of Nutrition Literacy. The wellness quality of the communities is identified through several body composition indicators comprised of several human body components, such as water, muscles, and fats. Quantitative wellness data is gathered through nutrition measuring scale (bio-impedance device), while qualitative wellness data is obtained through interview for 30 members of a nutrition literacy movement group (NLP) by counseling and sustained mentoring. From this research, it can be concluded that: (1) The scientific concepts in the material and process of Nutrition Literacy Concept demonstrates various characteristics, (2) The characteristics variation of scientific concepts on NLP is able to help respondents improve their wellness quality, (3) there is an improvement on wellness quality of the communities after joining NLP, as well as (4) there is a relationship between scientific literacy level and the wellness quality of communities through Nutrition Literacy Program (NLP). Topic: Mathematics, Science, and Computer Science Education 159 A TEXTBOOK EVALUATION OF PHYSICS BOOK FOR JUNIOR HIGH SCHOOL BASED ON THE REPRESENTATION OF MULTIPLE INTELLIGENCES TYPESFida Hanifah (1*), Winny Liliawati (2), Taufik Ramlan Ramalis (2), Judhistira Aria Utama (2) (1) Students of Physic Education Department, Indonesia University of Education Jalan Dr. Setiabudhi No. 229 Bandung 40154 Jawa Barat, Indonesia *fidahanifah94[at]gmail.com (2) Department of Physics Education, Indonesia University of Education Jalan Dr. Setiabudhi No. 229 Bandung 40154 Jawa Barat, Indonesia Abstract The purpose of this research is to have knowledge about the representation of multiple intelligences types in physics text book for Junior High School. The data sources of this research are BSE text books (electronic text book) of Science through Physics subject matters which is adopted from 3 books; book of VII, VIII, and IX grade. This research is using qualitative descriptive method through evaluating text book by instruments (checklist system which had developed by Seyyed Ayatollah Razmoo and Zahra Jozaghi). This checklist system refers to 9 multiple intelligences types from Howard Gardner (1999). These 9 multiple intelligences types would be specified in several activities which has relatedness with each type. The data analysis result shows that physics subject of Science in BSE text books for Junior High School is being more centred around logical intelligence which is intended on experiment, analysis, measure, and calculate. Therefore, it can be concluded that the book has not accommodated the entire intelligences. Topic: Mathematics, Science, and Computer Science Education 160 Application of Adobe Flash Media to Optimize Jigsaw Learning Model on Geometry MaterialImam Pakhrurrozi, Imam Sujadi, Ikrar Pramudya Sebelas Maret University Abstract The low of mathematics achievement is still a problem in Indonesia. Many efforts to improve student achievement have been done, one of them by applying cooperative learning model such as the jigsaw. But the learning process has not been effective that has not able to increase students’ interest, activeness, motivation, and achievement yet. This study aims to determine and describe the effectiveness of the application of adobe flash media for jigsaw learning model on geometry material. In this study, the modified jigsaw learning with adobe flash media is called jigsaw-flash model. The research method used is mix method research with exploratory sequential strategy. This research was conducted in state junior high schools in Surakarta. Subjects in this study were the students of class VIII namely class VIII-2 as an experimental class and class VIII-3 as a control class selected by random sampling technique. The experimental class was taught with a jigsaw-flash learning model and the control class was taught with a jigsaw model. The procedures performed in this study include qualitative data collection and data analysis followed by quantitative data collection and data analysis. The researcher used interview method for collecting qualitative data. While quantitative data collection was conducted by test and the analysis technique used was t-test. The results of this study indicate that students feel more comfortable and interested in studying geometry material taught by jigsaw-flash model. In addition, students taught using the jigsaw-flash model are more active and motivated than the students who were taught using ordinary jigsaw models in studying geometric material. This shows that the use of the jigsaw-flash model can increase student participation and motivation. The results of this study also indicate that the increase in student achievement taught by the jigsaw-flash model which is indicated by t-test result t = 2,259 with df = 38. Based on the results, it can be concluded that the adobe flash media can be used as a solution to the lower level of student abstraction and jigsaw-flash model provides better learning achievements than the jigsaw model. Therefore, teachers need to consider the use of jigsaw-flash learning model in learning geometry material. Topic: Mathematics, Science, and Computer Science Education 161 Profile of Students’ Learning Styles in Sorogan-Bandongan Organic Chemistry LectureRinaningsih (a*) , Asep Kadarohman (b), Harry Firman (b), Suyatno (a) (a)Department of Chemistry FMIPA Universitas Negeri Surabaya Jl. Ketintang Surabaya, Indonesia (60231) (b)Department of Chemistry FMIPA Universitas Pendidikan Indonesia Jl. Dr. Setiabudi 229 Bandung, Indonesia (40154) Abstract Individual-based independent curriculum as one of target of national education of Indonesia in XXI century can be achieved with the implementation of Sorogan-Bandongan model. This kind of learning model highly facilitates students in understanding various concepts with their own, respective learning styles. This research aims to perceive the effectiveness of Sorogan-Bandongan in increasing the mastery of concept in various learning styles. The samples of this research are students majoring in chemistry amounted to 31 students. Using pre-test and post-test instrument, data are analyzed in descriptive-qualitative method. Based on the result of the data analysis, it is found that 16% of students have mathematical/logical learning style, 22.6% naturalist, 9.7% visual/spatial, 13% kinesthetic, 6% linguistic, 13% intrapersonal, 9.7% interpersonal, and 10% musical. After the implementation of Sorogan-Bandongan model in the Organic Chemistry lectures, improvement of classical learning outcomes as 11,07 is obtained. Six out of eight learning styles of students experienced increase in mastery of concept, where 7 students have the naturalist learning style, 4 students experienced decrease in mastery of concept while 1 student is stagnant (0); meanwhile, 2 out of 4 students that have the interpersonal learning style experienced decrease in mastery of concept. Topic: Mathematics, Science, and Computer Science Education 162 The development of learning model for Natural Science basedon enviromental in conservation area of Bengkulu UniversityBhakti Karyadi (1), Agus Susanta(1), Endang Widi Winarni (1), Desy Enersi (2), Winda Zulistia (3) 1. Department of Mathematic and Science Education, Faculty of Teacher Training and Education,BengkuluUniversity, Jalan Raya Kandang Limun, Bengkulu 38371, Indonesia. 2.Secondary School 1 Ujans Mas, Jalan Raya Desa Suro Baru. Kepahiang, Bengkulu 39171, Indonesia. 3.Senior High School Ulu Musi, Empat Lawang 31594, South Sumatera, Indonesia.E-mail: bkaryadi[at]unib.ac.id Abstract Abstract--Research on development of a learning model for Natural Science base on conservation area inBengkulu University has been conducted. The research methods were refered to the standard steps of Researchand Development. Stage activities were (a) analysis of needs, (b) observation of the ecological aspects ofconservation area as a learning resource, and (c) instructional design based on conservation area for secondaryschool students. The observation results on the ecological aspects revealed that the diversity of plants andanimals, at the conservation area were sufficient as a source for learning. The instructional design was preparedin three phase activities namely Introduction-Exploration-Interpretation (IEI), and then it was compiled in ateaching material Based on Surrounding Natural Environment” (BSNE). The results of a limited scale trial atsecondary school students in two districts of Bengkulu province showed that, the students who learned using theIEI model at the conservation area have a good performance and critical thinking. The product from the researchis a book named BSNE that can be used for teachers and conservation practitioners in doing the learningactivities on enviromental conservation which involved public participation. Topic: Mathematics, Science, and Computer Science Education 163 The Effect of Multiple Intelligence-Based Learning towards Students Concept Mastery and Interest in MatterWida Nur W.Pratiwi; Diana Rochintaniawati; Rika Rafikah Agustin International program on Science Education, Universitas Pendidikan Indonesia. Abstract This research was focused on investigating the effect of multiple intelligence -based learning as a learning approach towards students’ concept mastery and interest in learning matter chapter. The one-group pretest-posttest design was used in this research towards a sample which was according to the suitable situation of the research sample, n = 13 students of Year 7 in Nusa Laila Puteri School in Bandar Seri Begawan. The students’ concept mastery was measured using achievement test and given at the pretest and posttest, meanwhile the students’ interest level was measured using a Likert Scale for interest. Based on the analysis of the data, the result shows that the normalized gain was 0.61, which was considered as a medium improvement. in other words, students’ concept mastery in matter increased after being taught using multiple intelligence-based learning. The Likert scale of interest shows that most students have a high interest in learning matter after being taught by multiple intelligence - based learning. Therefore, it is concluded that multiple intelligence – based learning helped in improving students’ concept mastery and gain students’ interest in learning matter concepts. Topic: Mathematics, Science, and Computer Science Education 164 Implementation of Interactive Conceptual Instruction with Multi Representation Approach To Optimize Scientific Communication Skills on Work and Energy Subject MatterEvelina Astra Patriot (a*), Andi Suhandi (b), Didi Teguh Chandra (c) (a)Student Postgraduate School, Indonesia University of Education, Jalan Setiabudi 229 Bandung, Indonesia. *astraevelina93[at]gmail.com (b)Physics Education Department, Indonesia University of Education, Jalan Setiabudi 229 Bandung, Indonesia Abstract This study aims to get an overview of the implementation of interactive conceptual instruction with multi representation approach to optimize the achievement of students scientific communication skills on work and energy subject matter. The research method used in this research is pre-experiment with research design used was one-group pretest-posttest. Subjects in this study were 35 students of class X MIA 1 in Senior High School at Sumedang. This research uses the instrument of multi representation test and observation sheets of scientific communication skills. The results of this study indicate an achievement of optimal scientific communication skills. The greatest achievement of KKI based on observation is at fourth meeting of KKI-3, which is a sub-skill of resume writing of 89%. While the largest percentage of achievement of KKI based on the results of essay test of 100% that is translate picture representation into an energy bar diagram. Generally, almost all students responded positively to the implication of interactive conceptual instruction with multi representation approach. It can be concluded that the implication of interactive conceptual instruction with multi representation approach can optimize the achievement of students scientific communication skill on work and energy subject matter. Topic: Mathematics, Science, and Computer Science Education 165 Validation of Science Virtual Test (SVT) to Assess 9th Grade Students’ Critical Thinking on Living Things and Environmental Sustainability ThemeLilit Rusyati, Harry Firman Faculty of Mathematics and Science Education Universitas Pendidikan Indonesia (UPI) Jl. Dr. Setiabudhi No. 229 Bandung 40154 Indonesia Abstract Critical thinking is one of important skill which required to develop the framework for 21st century learning. This study is descriptive research for analyzing the validation of science virtual test to assess students’ critical thinking. The participant is junior high school students of 9th grade (15 years old) while science teacher and expert as the validators. The number of participants are 110 students. Research instrument is multiple choice test based on eight elements and 26 sub elements critical thinking that has developed by Inch et al. and completed by relevant information as the stem of question. The eight elements consist of question at issue, purpose, information, concepts, assumptions, point of view, interpretation and inference, implication and consequences. There are four steps to validate science virtual test to assess students’ critical thinking on the theme of "Living Things and Environmental Sustainability" in 9th grade Junior High School. These steps are analysis of core competence and basic competence based on curriculum 2013, expert judgment, legibility test and trial test. The test item criterion based on trial test are accepted, accepted but need revision, and rejected. The reliability of the test is α = 0.58 and validity of Rxy = 0.41. It means the SVT that used is reliable to assess 9th grade students’ critical thinking. Topic: Mathematics, Science, and Computer Science Education 166 The Effect of Brainstorming on Students’ Creative Thinking Skill and Concept Mastery in Learning NutritionWinda Ismi Hidayanti, Diana Rochintaniawati, Rika Rafikah Agustin Universitas Pendidikan Indonesia Abstract This research investigated the effect of brainstorming towards students’ creative thinking skill and concept mastery in learning nutrition. The method that was used in this research is quasi experimental with pretest posttest design. The sample was taken by purposive sampling technique where one group was assigned as experimental group (n=25 students) and the other one group was assigned as control group (n=25 students). The population was 7th grade students in Islamic International School in Bandung. The quantitative data in this research was obtained from objective test and verbal TTCT, while the qualitative data was obtained from observation sheet. The findings of the study showed that there are statistical significant differences between experimental and control group in both creative thinking skill and concept mastery test in the favor of the experimental group, indicating the effectiveness of brainstorming in developing students’ creative thinking skill and concept mastery in learning nutrition. Topic: Mathematics, Science, and Computer Science Education 167 STUDENT’S MENTAL MODEL, MISCONCEPTIONS, TROUBLESOME KNOWLEDGE, AND THRESHOLD CONCEPT ON THERMOCHEMISTRY WITH DToM-POEWiji & Sri Mulyani Universitas Pendidikan Indonesia Abstract The purpose of this study is to obtain a profile of students mental models, misconceptions, troublesome knowledge, and threshold concept on thermochemistry. The subjects in this study were 35 students. The method used in this research was descriptive method with instruments Diagnostic Test of Mental Model - Prediction, Observation, and Explanation (DToM-POE). The results showed that the students ability to predict, observe, and explain enthalpy changes of neutralization reaction of NaOH with HCl was still lacking. Most students tended to memorize chemical concepts related to symbolic level and they did not understand the meaning of the symbols used. Furthermore, most students were unable to connect the results of observations at the macroscopic level with the symbolic level to determine enthalpy changes of neutralization reaction of NaOH with HCl. Then, most students tended to give an explanation by a net ionic equation or a chemical reaction equation at the symbolic level when explaining enthalpy changes of neutralization reaction at the submicroscopic level. In addition, there are seven misconceptions, three troublesome knowledges, and three threshold concepts held by students on thermochemistry. Topic: Mathematics, Science, and Computer Science Education 168 Developing Mathematical Habits of Mind Trough Inquiry Based LearningA D Handayani1.2.a), T Herman and S Fatimah3) 1)Student of doctoral Program, Program studi Pendidikan Matematika, Sekolah Pasca Sarjana, UniversitasPendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia 2)Program Studi Pendidikan Matematika, Universitas Nusantara PGRI Kediri, Jl. K.H ahmad Dahlan No. 76, Kediri, Indonesia 3)Departemen Pendidikan Matematika, UniversitasPendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia a)E-mail: apriliadwi[at]unpkediri.ac.id Abstract Inquiry based learning is one of learning based on understanding constructivist mathematics learning. In constructivism, students are trained and guided to be able to construct their own knowledge on the basis of the initial knowledge they have before. Mathematical Habits of mind can be known from sixteen criteria, among which are diligent, able to manage time well, have metacognition ability, meticulous, etc. This research method is quantitative descriptive. The result of this research is that the instruments that have been developed to measure mathematical habits of mind are validated. The conclusion is that inquiry based learning can be used to develop students mathematical habits of mind. Topic: Mathematics, Science, and Computer Science Education 169 Development of Geogebra-assisted Reciprocal Teaching Strategy to Improve Abstraction Ability, Lateral Thinking, and Mathematical Persistence of Junior High School StudentsNanang Priatna (a*), Bambang Avip Priatna Martadiputra (a), and Yudi Wibisono (b) a) Department of Mathematics Education, Universitas Pendidikan Indonesia Jl. Dr.Setiabudhi No. 229, Bandung 40154, Indonesia *nanang_priatna[at]upi.edu b) Department of Computer Science Education, Universitas Pendidikan Indonesia Jl. Dr.Setiabudhi No. 229, Bandung 40154, Indonesia Abstract As the development of science and technology, it is required a renewal to utilize various resources in the process of learning mathematics. One of the efforts that can be done is the implementation of Geogebra-assisted Reciprocal Teaching strategy in learning mathematics as an effective learning strategy in improving students cognitive, affective, and psychomotor ability. This research was intended to implement the Geogebra-assisted Reciprocal Teaching strategy in improving abstraction ability, lateral thinking, and mathematical persistence of junior high school students. This study used quasi-experimental method, with non-random pretest-posttest control design. This research used 2x3 factorial design with many factors of Geogebra-assisted Reciprocal Teaching strategy and conventional learning, and many mathematical ability factor (high, medium, and low). Subject in this research is VII students of junior high school with purposive sampling. The results of this study are improvement of abstraction and lateral abilities of students in learning with the implementation of Geogebra-assisted Reciprocal Teaching strategy was significantly higher than students who received conventional learning. Achievement of mathematical persistence of students in learning Geogebra-assisted Reciprocal Teaching strategy was significantly higher than conventional learning. Topic: Mathematics, Science, and Computer Science Education 170 Learning Difficulties of Senior High School Students Based on Probability Understanding LevelsBenny Anggara (a*), Nanang Priatna (b), Dadang Juandi (b) a) Department of Mathematics Education, postgraduate School, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia *bennyangkara[at]gmail.com b)Department of Mathematics Education, Universitas Pendidikan Indonesia Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia Abstract Identifying students difficulties in learning concept of probability is important for teachers to prepare the appropriate learning processes and can overcome obstacles that may arise in the next learning processes. This study revealed the level of students understanding of the concept of probability and identified their difficulties as a part of the epistemological obstacles identification of the concept of probability. This study employed a qualitative approach that tends to be the character of descriptive research involving 55 students of class XII. In this case, the writer used the diagnostic test of probability concept learning difficulty, observation, and interview as the techniques to collect the data needed. The data was used to determine levels of understanding and the learning difficulties experienced by the students. From the result of students test result and learning observation, it was found that the mean cognitive level was at level 2. The findings indicated that students had appropriate quantitative information of probability concept but it might be incomplete or incorrectly used. The difficulties found are the ones in arranging sample space, events, and mathematical models related to probability problems. Besides, students had difficulties in understanding the principles of events and prerequisite concept. Topic: Mathematics, Science, and Computer Science Education 171 MEASURES FOR ENHANCING HIGH SCHOOL STUDENTS’ COOPERATIVE ATTITUDE AND RESPONSIBILITIES IN LEARNING CLOSED ELECTRICAL CIRCUITS THROUGH STEM APPROACHHeni Rusnayati, Imas Masripah, Irma Rahma Suwarma Universitas Pendidikan Indonesia Abstract This study conducted by the finding of the lack of students’ cooperative attitude that gained 35.29% and the students’ responsibility 29.41% (Apriyani, 2013). It also looks at the preliminary study that conducted by the observation group obtained the students’ cooperative attitude (34%) and students responsibility (30%). The purpose of this study to determine students’ cooperative attitude and responsibility at the time of learning a closed electrical circuit through STEM approach. This research method isthe descriptive study with the pre-experimental designand the paradigm of one shot case study. The population of this study is the tenth-grade high school students with a sample size of 40 students that consist of 24 femaleand 16 male. The data collection techniques that utilized is the attitude rubric and the attitude measurement format. The result of this study showed that the percentage of students’ cooperative attitudein the first and second meetingis 83% and 81% with very high criteria. Meanwhile, the attitude of responsibility answerablefor the first and second meeting was 81% and 79% with very high and high criteria. This indicates that the STEM approach can improve students’ cooperativeattitude and responsibility. Topic: Mathematics, Science, and Computer Science Education 172 DESIGN E-LEARNING WITH FLIPPED CLASSROOM MODEL TO IMPROVE UNDERSTANDING THE CONCEPTS BASIC OF THE LOOP CONTROL STRUCTUREDwi Putri Handayani, Drs. H. Heri Sutarno, MT., Yaya Wihardi, M.Kom. Departemen Pendidikan Ilmu Komputer FPMIPA UPI Jalan Dr. Setiabudhi No 229 Kota Bandung 40154 Abstract Based on pre-research data, student experience difficulties in basic programming subject especially in the loop control structure proofed by their daily-exam grade was 53,67 while KKM was 75. This study aimed in design and build e-learning with classroom flipped model to improve the concept understanding of SMK students on the loop control structure. Research and development obtained research data from survey questionnaire given to students of SMK class X RPL in SMK Negeri 2 Bandung and interviews to RPL productive teacher. Data also obtained from questionnaire of expert validation and students assessment from e-learning with flipped classroom models. Data also obtained from multiple-choice test to measure improvements in conceptual understanding. The results pf the research were: 1) Developed e-learning with flipped classroom models considered good and worthy of use by the average value of the percentage of 86.3% by media experts, and 85.6% by subject matter experts, then students gave judgment very good on e-learning with flipped classroom models with a percentage of 79.15% votes. 2) e-learning with classroom flipped models show an increase in the average value of pretest before using e-learning 26.67 compared to the average value posttest after using e-learning at 63.37 and strengthened by the calculation of the index gains seen Increased understanding of students concepts by 50% with moderate criteria indicating that students understanding is improving. Topic: Mathematics, Science, and Computer Science Education 173 The Implementation of Multimedia Learning Based on Adventure Game with CORE (Connecting, Organizing, Reflecting, Extending) Model to Improve Student Understanding Towards Proxy Server MaterialRegina Puti Triani, Munir, Heri Sutarno Pendidikan Ilmu Komputer Abstract This study aims to improve student’s understanding towards Proxy Server material. Students are given learning using multimedia learning based on adventure game with CORE model (Connecting, Organizing, Reflecting, Extending). The sample in this study is the 11th grader of the TKJ course at SMK Negeri 2 Bandung in February 2017. This study used experimental research methods with One-Group Pretest- Postest Design. To determine the feasibility of multimedia, material content and media content that exist in multimedia tested by experts using questionnaire developed by LORI. The test results state that multimedia learning based on adventure game is feasible to be used for learning. After doing research and data processing research, there is increasing index value of student gain after using multimedia learning based on adventure game wih CORE model Topic: Mathematics, Science, and Computer Science Education 174 Implementation Visualization Auditory Kinesthetic Model With Interactive Multimedia In Basic Networking Subject To Improve Students’ Cognitive In Vocational SchoolHazmi Nur Fadhilah Tauhid1, Heri Sutarno2, Eddy Prasetyo Nugroho3 Computer Science Education Departement Faculty of Mathematics and Science Indonesia University of Education Bandung, Indonesia 1 hazmi.nur.fadhilah[at]student.upi.edu, 2herisutarno[at]upi.edu, 3 eddypn[at]upi.edu Abstract Learning process in schools, need multimedia learning. The learning process to develop a visualization auditory kinesthetic model with interactive multimedia in basic networking, to measure improvements in cognitive aspect of students through the visualization auditory kinesthetic model with interactive multimedia in basic networking and to measure the results of students’ responses to the visualization auditory kinesthetic model with interactive multimedia. Based on field studies, the students do not understand the material in basic networking especially subnetting. Therefore, the researcher made use of interactive multimedia of visualization auditory kinesthetic model. Research method used in this study is experiment, and the research design is one group pretest-posttest design. Researcher conducted a validation of multimedia to media experts and subject matter experts, media experts validate the results by 76.67% to the “Good” category while subject matter experts by 80.00% with the “Very Good” category. To determine the students’cognitive enhancement, pretest and posttest were conducted to 33 students. The result of the pretest has an average of 48.03% and amounted to 80.45% posttest. Based on the pretest and posttest results, a gain index of 0.62 is obtained under the "Medium" category. As for the Gain index of the upper group has an index Gain 0.47 with the "Medium" Gain index, the middle group has an index Gain 0.63 with the "Medium" index and the upper group has an index Gain 0.71 with the "High" Gain index. The result of students responses to multimedia obtained an average of 77.38% with the “Good” category. Topic: Mathematics, Science, and Computer Science Education 175 STEM LEARNING ON ELECTRICITY USING ARDUINO-PhET BASED EXPERIMENT TO IMPROVE 8th GRADE STUDENTS’ STEM LITERACYDr. Eka Cahya Prima S.Pd,M.T ; Tiara Diba Oktaviani ; H. Hayat Sholihin, M.Sc., Ph.D Universitas Pendidikan Indonesia Abstract Technology is the application of scientific knowledge for practical purposes, especially in industry. One way to support the development of the technology is by integrating the use of technology and build the technology with the learning process in the form of STEM (science, technology, engineering, mathematics ) Learning approach. Applying STEM Learning could improve Students’ STEM Literacy. The learning approach is applied in every aspect of Learning including the application of STEM Learning in the lesson plan and worksheet. The method that used in this research is weak experimental. One group class (N=15) taken and learn by STEM Learning approach. The topic that learned by students is the electricity topic which is separated into electrical circuit and electrical parameters. The learning process separated into 3 meeting and it is conducted once a week. 15 Students are given a test item before and after the lesson. There are 25 question that used to measure student STEM Literacy. The result of the normalized gain shows there are improvement in students’ STEM Literacy. The most higher improvement is the students’ technology literacy. Students’ learn using the same technology in every meeting. That’s influence students’ technology literacy. Topic: Mathematics, Science, and Computer Science Education 176 Application Of MID Learning Model Aided Interactive Multimedia Based Animation To Improve Cognitive Capability Of Vocational StudentsShafira Marliana, Jajang Kusnendar, Rosa Ariani Sukamto Departemen Pendidikan Ilmu Komputer, Universitas Pendidikan Indonesia Abstract This research aims to know the upgrading of cognitive aspect with application of MID learning model aided interactive multimedia based animation of vocational strudents on basic network subject. The research method used is Quasi Experiment with nonequivalent control group design. Development of interactive multimedia based animation consists of preparation, analysis, design, development, testing and implementation. Assessment data to multimedia using questionnaires designed based on Learning Object Review Instrument (LORI) which addressed to subject experts and media experts. From this research showed assessment result obtained from media experts at 89,33% that included in the category of excellent, and assessment from subject experts at 83,75% that included in the category of excellent, from both of the value can be concluded that the interactive multimedia based animation is suitable for applied in learning. As for the application of learning in the classroom consist of pre-test processing stage, learning implementation, and post-test processing. From this research stage, obtained the average value of the pre-test control class is 41,96 and the average value of the post-test control class is 73,75. By calculating the value of pre-test and post-test of control class, obtained value of gain equal to 0.55. While the average value of the experimental class pre-test is 36,6 and the average value of the experimental class post-test is 81,07 with the value of gain equal to 0,72. Based on the result of the research, there is a significant improvement of student cognitive capability between control class using conventional learning model with experimental class using MID learning model aided by interactive multimedia based animation. Topic: Mathematics, Science, and Computer Science Education 177 Introducing of Bunda (Bumbu Dapur) Herbs Plants to Increase Science Attitude of StudentZahra Fadhilah (*,a), Ningtyas Arum Sari (b) a Biology Education/ Biology Education, UPI, Bandung b Biology Education/ Biology, UPI, Bandung *zahrafadhilah.anwar[at]gmail.com Abstract Indonesia is a beautiful country which is rich country in plants, ethnic and culture. Jamu is one of the many cultural richness which heritages that have been abandoned by modern society. Indonesian peoples’ knowledge of herbal medicine is very low. Though materials of herbs simple and easy to find in everyday life, for example in kitchen spices. This study aims to introduce to the students the efficacy of herbs from the surrounding spices so that students science attitude can be awakened. They become concerned about the environment, Indonesian culture, especially the spice plant around their daily life. This research method is one shoot pre-test post-test by using likert scale as parameter. The research was done by giving demonstration to the students related to the making of simple herbal medicine. The results of this study indicate a change in students science attitude and student interest in the efficacy of herbal medicine based on the spice of the kitchen seen from the t count value (0,01 with alpha 0,05) before and after the demonstration of herbal medicine. It is expected that this research can be a reference and guidance for the TOGA program (Family Medicinal Plants) which is being proclaimed by the government. Topic: Mathematics, Science, and Computer Science Education 178 Using the Van Hiele Theory to Analyze Primary School Teachers Written Work on Geometrical Proof ProblemsAl Jupri Departemen Pendidikan Matematika, Program Studi Pendidikan Matematika dan Program Studi Pendidikan Dasar, Universitas Pendidikan Indonesia Abstract The lack of ability of primary school teachers in deductive thinking, such as doing geometrical proof, is an indispensable issue to be dealt with. In this paper, we report on results of a three-step of the field document study. The study was part of a pilot study for improving deductive thinking ability of primary school teachers. First, we designed geometrical proof problems adapted from literature. Second, we administered an individual written test involving nine master students of primary education program, in which they are having experiences as primary school mathematics teachers. Finally, we analyzed the written work from the view of the Van Hiele theory. The results revealed that even if about the half of the teachers show ability in doing formal proof, still the rest provides inappropriate proving. For further investigation, we wonder whether primary school teachers would show better deductive thinking if the teaching of geometry is designed in a systematic and appropriate manner according to the Van Hiele theory. Topic: Mathematics, Science, and Computer Science Education 179 IMPROVING THE BASIC SKILLS OF TEACHING MATEHEMATICS THROUGH LEARNING WITH SEARCH-SOLVE-CREATE-SHARE STRATEGYDiar Veni Rahayu, Yaya S. Kusumah, Darhim Universitas Pendidikan Indonesia Abstract This study examined to see the improvement and achievement of prospective teachers’ basic skills of teaching mathematics through learning with search-solve-create-share strategy based on overall and early mathematically ability (KAM) and interaction of both. Quasi experiments with the design of this experimental- nonequivalent control group design involved 67 students at the Mathematics Program of STKIP Garut. The instrument used is pretest-postest. The result of this study are: (1) The improvement and achievement of the basic skills of teaching mathematics of the prospective teachers who get the learning of search-solve-create-share strategy is better than the improvement and the achievement of the basic skills of teaching mathematics of the prospective teachers who get the conventional learning as a whole and based on KAM; (2) There is interaction between the learning used and KAM on improving and achieving basic skills of teaching mathematics. Topic: Mathematics, Science, and Computer Science Education 180 DESIGN OF INTERACTIVE MULTIMEDIA BASED ON GAME WITH AUDITORY INTELLECTUALLY REPETITION TO INCREASE STUDENT COGNITIVES IN DATA BASEKiki Muhamad Rizky, Eka Fitrajaya, Enjun Junaeti Universitas Pendidikan Indonesia Abstract Data base lessons is a one of the productive subjects at SMKN 11 Bandung. There were a problem in this subjects that student cannot deal with it, especially on entity relationship diagram. Therefore, we needed a learning tool that could support student to learn and teacher to complete the tasks. The learning aids is an interactive multimedia that made with Construct 2. This research is intend to knowing the development of student cognitive after the implemetation of Auditory intellectually repetition with interactive multimedia based on game. This test run on 12 grade RPL 1 SMKN 11 Bandung. The result were : 1) developed multimedia has percentage rating 77.33 % from media expert and 83.39 % from materials expert; 2) the increasing of student cognitive after use this multimedia can see from average pretest value and posttest value have been increased, from 11.39 to 17.18 with gain value 0.67; 3) student give a positive response to this multimedia that use in learning process, they contribute a good comment on a questionnaire about multimedia assessment. Topic: Mathematics, Science, and Computer Science Education 181 Learning Model on The Linear Program In 11th Grade of Vocational School StudentsAntinah, Tri Atmojo Kusmayadi, Budi Husodo Postgraduate Mathematic Education Programe of Sebelas Maret University Abstract Abstract. This study aimed to determine the effect of learning model on student achievement in terms of interpersonal intelligence. The compared learning models are LC7E and Direct learning model. This type of research is a quasi-experimental with 2x3 factorial design. The population in this study is a Grade XI student of Wonogiri Vocational Schools. The sample selection had done by stratified cluster random sampling. Data collection technique used questionnaires, documentation and tests. The data analysis technique used two different unequal cell variance analysis which previously conducted prerequisite analysis for balance test, normality test and homogeneity test. he conclusions of this research are: 1) student learning achievement of mathematics given by LC7E learning model is better when compared with direct learning; 2) Mathematics learning achievement of students who have a high level of interpersonal intelligence is better than students with interpersonal intelligence in medium and low level. Students mathematics learning achievement with interpersonal level of intelligence is better than those with low interpersonal intelligence on linear programming; 3) LC7E learning model resulted better on mathematics learning achievement compared with direct learning model for each category of students interpersonal intelligence level on linear program material. Topic: Mathematics, Science, and Computer Science Education 182 Profile of Understanding and Self-Efficacy Students of Vocational High School in Dynamic Electrical ConceptP P D Nurhilal,1a), P Siahaan1, and D T Chandra1 1’ Departemen Pendidikan Fisika, Sekolah Pascasarjana Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to explore the profile of the ability to understand and self-efficacy of Vocational High School students in Bandung on the concept of dynamic electricity. Data on students understanding and self-efficacy skills are needed to determine the treatment to be used in subsequent research. The sampling technique used in this research is purposive sampling. The acquisition of the ability data to understand through the test, while the self-efficacy through the attitude scale, both equipped with interviews. The ability to understand refers to the Bloom Taxonomy Revision, while self-efficacy refers to Baldwins instrument. The results show that the percentage of students who have had the ability to understand for the interpreting aspects of 42%, exemplifying aspect of 45%, classifying aspect of 37%, summarizing aspect of 35%, inferring aspect of 38%, comparing aspect of 43%, and explaining aspect of 40%. This shows that the ability to understand only reaches 40% (low category). While the result of the attitude scale and the interview about the studentss self-efficacy, there is uncertainty of their own ability, it shows that the studentss self-efficacy is still low. Topic: Mathematics, Science, and Computer Science Education 183 Scientific Reasoning Profile of Junior Secondary School students on the concept of Static FluidN Mariana1,a), P Siahaan1 and S Utari1 1 Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to determine the profile of scientific reasoning of junior high school students about the concept of static fluid. This research uses a descriptive method with a quantitative approach to get an idea about the scientific reasoning of One Roof Junior Secondary School Student Kotabaru Reteh in Riau. The technique of collecting data is done by test of scientific reasoning. Scientific reasoning capability refers to Furtaks EBR (Evidence Based Reasoning) that contains the elements of claims, data, evidence, and rules. The result obtained on each element of scientific reasoning is 35% claim, 23% data, 21% evidence, and 17% rule. The conclusions of this research that scientific reasoning of One Roof Junior Secondary School student Kotabaru Reteh, Riau Province still in the low category. Topic: Mathematics, Science, and Computer Science Education 184 Argumentation Skill Profil Using “Toulmin Argumentation Pattern” Analysis of high school student at Subang on Topic Hydrostatic PressureLina Syerliana, Muslim, Wawan Setiawan Postgraduate School, Indonesia University of Education, Jalan Setiabudi 229 Bandung, Indonesia. linasyerliana.vip[at]gmail.com Abstract This study aims to know profile of argumentation skill high school student at Kabupaten Subang. To achieve this goal, researcher conducted a descriptive study to analysis student test results of argumentation skill of 35 students XII SMAN. Data collection using argumentation test which has validation by expert and then it is analyzed using TAP (Toulmin Argumentation Pattern) which consist of some components such a data, claim, warrant, backing, and rebuttal on the topic of hydrostatic pressure. The method used in this research is descriptive method. The result of this research show the student’s scientific argumentation skill is still low, this is proven by 54% average claim score, 38% data, 29% warrant, 35% backing and 35% rebuttal. These findings will serve as a basis for further research on innovative learning models that can improve students argumentation skill. Topic: Mathematics, Science, and Computer Science Education 185 The Correlation between Concept Mastery and Stage of Moral Reasoning Student Using Socio-scientific Issues on Reproductive System MaterialTri Ayu Lestari, Saefudin, and Didik Priyandoko Indonesia University of Education Abstract This research aims to analyze the correlation between concept mastery and moral stages of students. The research method is using a correlational study with stratified random sampling technique. The population in this research is all of eleventh grade students in Senior High School Bandung. The data were collected from 297 eleventh grade students of three Senior High School in Bandung with use the instrument in the form of examination and stage of moral reasoning questionnaire. The stage of moral reasoning in this research consists of two student’s moral reasoning categories based on 16 questionnaire as the indicators from Jones et al. (2007). The results of this research shows that the average of eleventh grade student’s moral reasoning stage is the advanced stage. The results of this research shows that the concept mastery and the stage of moral reasoning indicates that there are 0.370 0f a positive correlation. This research provides an overview of eleventh grade student about concept mastery and stage of moral reasoning using socio-scientific issues. Topic: Mathematics, Science, and Computer Science Education 186 Profile of Student’s Generated Representations and Creative Thinking Skill in Problem Solving in Vocational SchoolPebi Muhamad Fikri (1), Parlindungan Sinaga (1), Lilik Hasanah (1), Devi Solehat (2) 1) Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 2) Pendidikan Fisika, Fakultas Ilmu Tarbiyah dan Keguruan, UIN Syarif Hidayatullah Jakarta, Jl Ir. H. Djuanda N0. 95, Ciputat, Tangerang Selatan-Banten 15412 Abstract This study aims to determine profile of student’s generated representations and creative thinking skill on problem solving in vocational school. This research is a descriptive research to get an idea of comprehend student’s generated representations and creative thinking skill on problem solving of vocational school in Bandung. Technique of collecting data is done by test method, observation, and interview. Representation is something that represents, describes or symbolizes an object or process (Rosengrant et al., 2007). To evaluate the multi-representation skill used essay test with rubric of scoring was used to assess multidepresent student skills. While creative thinking skill on problem solving used essay test are adapted from Wang et al which contains the components of skills in finding facts, problem finding skills, idea finding skills and solution finding skills. The results showed generated representations is still relatively low, this is proven by average student answers explanation is mathematically correct but there is no explanation verbally or graphically. While creative thinking skill on problem solving is still relatively low, this is proven by average score for skill indicator in finding the student problem is 1.52 including the non-creative category, average score for the skill indicator in finding the student idea is 1.23 including the non-creative category, and the average score of the students skill in finding this solution is 0.72 belongs to a very uncreative category. Topic: Mathematics, Science, and Computer Science Education 187 Diagnostic of Students’ Conception on Atomic Structure Using Open Ended Questions : A Study of Learning NeedsZonalia Fitriza, Fauzana Gazali Chemistry Department Universitas Negeri Padang Abstract This study aims to diagnose learning needs of students focusing to students’ conception on Atomic Structure concepts. It used open ended questions as the instrument which was diagnose students’ conception and misconception of senior high schools students in Padang West Sumatera. The data found shows that most of students do not understand about some concepts of Atomic structure such as atom, atomic model, electron configuration, period and group, however they have scientific conception of atomic particle. In addition, some students posses misconception of atomic structure concepts, particularly in the concept of atom, atomic model and electron configuration of ion. The result of this study gives the information about the concepts which are need emphasized in learning resources, media and teacher can choose appropriate method in learning Atomic Structure. Topic: Mathematics, Science, and Computer Science Education 188 The Development of a Physics Knowledge Enrichment Book "Alat Optik yang dilengkapi dengan Augmented Reality" to Improve Students Learning OutcomesI Made Astra (a) and Fahruroji Saputra (b) Universitas Negeri Jakarta Jl. Rawamangun Muka, Jakarta Timur 13220 a) imadeastra[at]gmail.com b) fahrurojis7194[at]gmail.com Abstract This study aims to develop a physics knowledge enrichment book which is provided with augmented reality focusing on the proper optical instruments as the subject to improve students’ learning outcomes. This physics knowledge enrichment book entitled “Alat Optik yang dilengkapi dengan Augmented Reality” discusses some optical instruments seeing from its history, physics concepts, and types. This study used method Research and Development which is developed as Model Pengembangan Instruksional. In the previous study has been done feasibility test to the material and media experts with the percentage by each experts are 88,50% and 88,90%. In this study, we did the trial run of product use was carried out to a physics teacher and 25 students of SMAN 33 Jakarta. This trial run got the average percentage of 88.10% from the physics teacher while the result of the students was 82.80% and the gain normalized test result of 0.71 which meant the students learning outcomes had increased in cognitive domain with high interpretation. Based on the result of this study, the physics knowledge enrichment book entitled “Alat Optik yang dilengkapi dengan Augmented Reality” is a proper book in order to improve students’ learning outcomes in cognitive domain with high interpretation. Topic: Mathematics, Science, and Computer Science Education 189 Development of Mini Project Interactive Media on SMP Statistics MaterialsDesrina Fauziah*, Mardiyana, dan Dewi Retno Sari Saputro Department of Magister Mathematics Education, Faculty of Teacher Training and Education Sebelas Maret University Abstract Assessment is an integral part in the learning process. Assessment process and the result should be thoroughly, so that all aspects of the ability of learners can be measured. Authentic assessment is referred to as a form of assessment that measures the competence of attitudes, knowledge, and skills in a balanced. However, most teachers including mathematics teachers who have implemented curriculum based teaching 2013 have confusion and difficulty in crafting authentic assessment instruments. It is therefore necessary to design an authentic assessment instrument, in this case an interactive mini media project that teacher can adopt in the assessment. This type of research is the development of research. The development research refers to the development model of Thiagarajan, Semmel and Semmel is define, design, develop and disseminate. The research purpose is to create a valid mini project interactive media on SMP statistics materials. The retrieved valid instrument based on expert judgment are 3,1 for eligibility constructions aspect, and 3,2 for eligibility presentation aspect, 3,25 for eligibility contents aspect, and 2,9 for eligibility didactic aspect. The research results obtained interactive mini media projects on statistical materials using Adobe Flash so it can help teachers and students in achieving learning objectives. Topic: Mathematics, Science, and Computer Science Education 190 THE EFFECTIVENESS OF SCIENTIFIC-BASED STUDENT WORKSHEET IN ENHANCING STUDENTS COGNITIVE, AFFECTIVE AND PSYCHOMOTOR ASPECTSCita Tresnawati, Yusuf Ibrahim, Mia Nurkanti Universitas Pasundan Abstract The current study is a part of a three-year research aiming at developing student worksheets which are based on scientific project approach, which consists of inquiry, problem-based learning, and project-based learning models. This study is at dissemination phase, in which it attempts to investigate the effectiveness of the scientific project-based worksheets that were developed in the second year of the research. This study employed educational research and development (R & D). The instrument used to collect the data were scientific project-based worksheet, assessment sheets to assess the participants’ cognitive, affective and psychomotor aspects, questionnaires for teachers, practitioners and students. The dissemination involves 29 students taking internship program from 2013 to 2014, at several schools in Bandung. The results show that scientific project-based worksheets, with N-gain average of between 0.55-0.82 is categorized as medium and high, and significantly different at significance level α = 0.05. It means the use of the worksheets significantly improves learners’ concept understanding as a whole. Feedbacks gained also suggest that the developed worksheet models have positive effects on the students attitude towards science, with the average score from 81.33 to 88.37. The rate for psychomotor aspect, with its mean value 80.73-91.67 has proven to be effective to encourage students to be more active during lab activities. Topic: Mathematics, Science, and Computer Science Education 191 Rigorous Mathematical Thinking (RMT): the Impact toward Geometry UnderstandingZ Nugraheni, B Budiyono, and I Slamet Department of Mathematics Education, Postgraduate Program of Sebelas Maret University, Jl. Ir. Sutami No.36A, Jebres, Kota Surakarta, Jawa Tengah 57126, Indonesia, Phone:+62 271 646994 Abstract The foundation of high order thinking skill is conceptual understanding as it the ability which is concerned with concepts (i.e axioms, definitions, theorems, etc), operations and relations. It was notion to reach higher order thinking skill, needed to be mastered the conceptual understanding. RMT is a unique realization of the cognitive conceptual construc-tion approach based on Mediated Learning Experience (MLE) theory by Feurstein and Vygotsky’s sociocultural theory. This was quasi experimental research which was comparing the experimental class that was given Rigorous Mathematical Thinking (RMT) as learning method and the control class that was given Direct Learning (DL) as the conventional learning activity. This study examined whether there was different effect of two learning method toward conceptual understanding of Junior High School students. The data was analyzed by using Independent t-test and obtained a significant difference between experimental and control on geometry conceptual understanding. Further, by semi-structure interview known that students who taught by RMT had deeper conceptual understanding than students who were taught by conventional way. By these result known that Rigorous Mathematical Thinking (RMT) as learning method have positive impact toward Geometry conceptual understanding. Topic: Mathematics, Science, and Computer Science Education 192 Development College Student Worksheet Based E-Learning Through Edmodo to Maximize Learning Result and MotivationAnton Nasrullah (a*), Mira Marlina (a), Suryadi (a) a) Department of Mathematics Education, Perguruan Tinggi Bina Bangsa. Jalan Raya Serang-Jakarta Km 03 No 1B (Pakupatan), Banten 55281, Indonesia. *a) Anton.Nasrullah[at]binabangsa.ac.id Abstract The objective of the study was to develop a college student worksheet using Edmodo as a learning support tool and to know the effectiveness of peer tutor learning model applied in the learning of economic mathematics on motivation and attitude. Research used for quantitative approach and quasi-experiment method to collect data applying test and questionnaire. The sample in the study is a second-year student enrolled in a college in Serang - Banten. The sample comes from two classes. One class was used for the control group of 29 students; one for the exploratory group of 40 students. In the control group, students were taught only in a personal learning environment using peer tutor models whereas experimental groups studied through peer tutor models in the classroom were supported by student worksheet learning using Edmodo. The findings show that college student worksheets use is better than traditional learning. That is, students in the experimental group not only outperformed them in the control group in the learning outcomes, but they also showed a higher learning motivation. Although students in both groups did not differ in their attitudes toward peer tutor models, students in the experimental group expressed positive attitudes toward Edmodo. The findings of this study have implications for encouraging educators to see how technology can facilitate as a means of supporting learning and assisting learners resulting in a better atmosphere of economic mathematics learning. Topic: Mathematics, Science, and Computer Science Education 193 Field Trip Method to Investigate Local Biodiversity Issues as an Effort to Develop Student Environmental LiteracyMuhammad Rijal (1*). Saefudin (2). Amprasto (2) 1) Biology Education, Postgraduate’s School, Universitas Pendidikan Indonesia 2) Department of Biology Education, FPMIPA, Universitas Pendidikan Indonesia Jalan Dr. Setiabudhi Nomor 229, Bandung 40154, Indonesia *akumuhammadrijal[at]gmail.com Abstract Field trip method through investigation of local biodiversity cases can provide educational experiences for students. This learning activity is efforts to improve students’ environmental literacy on biodiversity. The aim of this study is to describe the activities of students through field trip and to describe how students identifying and analyzing information toward biodiversity issues on field. The research method uses quasi-experiment and involved 36 participants (16 male and 20 female) at senior high school students in the city of Bandung. Research instruments for collect data are observation sheets and questionnaires sheets for students. The analysis of data are qualitative and quantitative descriptive. The results show that through field trip activity, students tend to be active with teamwork during the process of recording information and interviewing to veterinarian, animal keeper, and visitors. Students not only gain additional knowledge about the diversity of animals, but also they know the conditions, status and characteristics of these animals. Students help each other in the process of exchanging information about the results of the investigation. After field trip, students are interested in effort to save protected and endangered animals, to voice the importance of animal life through media, and interested in being an observer of animals. The findings information on field is the basis of factual knowledge for students to increase environmental literacy on biodiversity issues. Based on the results, it is necessary to facilitate the activities in the classroom to improve students’ environmental literacy based on the results of field trip activities. Topic: Mathematics, Science, and Computer Science Education 194 Analysis Of Student’s Scientific Literacy Skills Through Socioscientific Isssue’s Test On Biodiversity TopicsLisdiana Dwi Purwani , Fransisca Sudargo, Wahyu Surakusumah Program Studi Pendidikan Biologi, Sekolah Pascasarjana, Universitas Pendidikan Indonesia Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia Jl Dr. Setiabudhi No 229, Bandung, Indonesia Abstract The aims of this study is to describe student’s scientific literacy skills at grade X science programme of senior high school on biodiversity topics. Dimension of scientific literacy that was assesed are science’s competence and attitude towards science. This study is part of research for developing teaching’s models using socioscientific issue approach to increase scientific literacy skills. Test of scientific literacy skills was measured by using paper test and attitude scale based on biodiversity’s socioscientific issue. The result of study are showed that student’s scientific literacy skills for science competence dimension is low (15.84% for class A and 19.50% for class B) dan also for attitude toward science dimension (31.15% for class A and 37.05%). So, we concluded that student’s scientific literacy skills is low (23.49% and 28.55%). We assumed that the low level of student sceintific skills is caused by student who didn’t habituated to learning socioscientific issue at class. Topic: Mathematics, Science, and Computer Science Education 195 APPLICATION OF EXPERIENTIAL LEARNING MODEL USING SIMPLE PHYSICAL KIT TO INCREASE ATTITUDE TOWARD PHYSICS STUDENT MA IN FLUIDA H Johari1, Muslim2 1 Student of Physics Education, Graduate School of Indonesia State University, Jl. Dr. Setiabudhi 229, Bandung 40154, Indonesia 2Department of Physics Education, Graduate School of Indonesia State University, Jl. Dr. Setiabudhi 229, Bandung 40154, Indonesia Abstract Experiential learning learning model using simple physics kit has been implemented to get a picture of improving attitude toward physics MA students on Fluid. This study aims to obtain a description of the increase attitudes toward physisch MA students. The research method used was quasi experiment with nonequivalent pretest-posttest control group design. Two class of tenth grade were involved in this research 29, 29 students respectively experiment class and control class. Increased Attitude toward physisch of MA students is calculated using an attitude scale consisting of 18 questions. Based on the experimental class test average of 86.5% with the criteria of almost all students there is an increase and in the control class of 53.75% with the criteria of half students. This result shows that the influence of experiential learning model using simple physics kit can improve attitude toward physics compared to experiential learning learning without using simple physics kit Topic: Mathematics, Science, and Computer Science Education 196 The Effect of Learning Multimedia on Students’ Understanding of Macroscopic, Sub-Microscopic, and Symbolic Levels in Electrolyte and NonelectrolyteE.Eliyawati (a*), Ijang Rohman (b), Asep Kadarohman (b) a. International Program on Science Education (IPSE) Study Program, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no 229, Bandung 40154, Indonesia b. Chemistry Department, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no 229, Bandung 40154, Indonesia Abstract This research aims to investigate the effect of learning multimedia on students’ understanding of macroscopic, sub-microscopic, and symbolic levels in electrolyte and nonelectrolyte topic. The quasi-experimental with one group pretest post-test design was used in this research towards a sample which was according to the suitable situation of the research sample, seventy students of class X at a Senior High School. Thirty-five students were in experimental class and another thirty-five were in control class. The students’ understanding of macroscopic, sub-microscopic, and symbolic levels were measured using achievement test include three levels representation and given at pretest and post-test. The t-test was performed on the average level of 95% to identify the significant difference between experimental class and control class. Based on the analysis of data, the results shows that the normalized gain average of experimental class is 0.75 (high) and the normalized gain average of experimental class is 0.45 (moderate). There is significant difference of students’ understanding in sub-microscopic and symbolic levels and there is not significant difference of students’ understanding in macroscopic level between experimental class and control class. The normalized gain of students’ understanding of macroscopic, sub-microscopic and symbolic in experimental class are 0.6 (moderate), 0.75 (high), and 0.64 (moderate), while the normalized gain of students’ understanding of macroscopic, sub-microscopic and symbolic in control class are 0.49 (moderate), 0.39 (high), and 0.3 (moderate). Therefore, it can be concluded that learning multimedia can helped in improving students’ understanding especially in sub-microscopic and symbolic levels. Topic: Mathematics, Science, and Computer Science Education 197 Didactical design based on sharing and jumping tasks for senior high school chemistry learningIin Fatimah and Sumar Hendayana Indonesian University of Education Abstract The purpose of this research is to develop didactical design of senior high school chemistry learning based on sharing and jumping tasks in shift equilibrium chemistry. Sharing tasks used to facilitate students slow learners with help other students of fast learners so they engage in learning. While jumping tasks used to challenge fast learners students so they didn’t feel bored in learning. In developing the didactic design, teacher activity is designed not only to focus on students and learning materials but also on the relationship between students and learning materials.While, based on the results of the analysis teaching plan of shift equilibrium chemistry in attached Senior High School to Indonesia University of Education, showed that the learning activities focus more on how the teacher teaches instead of how the process of student learning.The research methode used is didactical design research (DDR). Didactical design research have three steps are, (1) analyzing didactical condition before learning, (2) analyzing metapedadidactical and (3) analyzing retrospectif. Data were collected by test, observations, interviews, documentation and recordings (audio and video).The result of the research is didactical design on shift equilibrium chemistry validated. The findings of this study will be presented at the conference. Topic: Mathematics, Science, and Computer Science Education 198 IMPLEMENTATION OF LEARNING MULTIMEDIA BASED ON ADVENTURE GAMENovi Sofia Fitriasari, Muhammad Fiqri Ashiddiqi, Enjang Ali Nurdin Departemen Pendidikan Ilmu Komputer Universitas Pendidikan Indonesia Abstract This study aims to find out the increase in learners’ understanding after being given treatment of leaning multimedia based on adventure game in learning Web Programming. Participants of this study are students of class X (ten) in one of the Vocational Schools (SMK) in Indonesia. The method used was mixed method by using embedded concurrent strategy, consisting of qualitative and quantitative research methods. The qualitative method was conducted during the development of the learning multimedia. To find out the quality of developed multimedia, test were carried out by media experts and material experts using a questionnaire developed based on Learning Object Review Instrument. The results of the test were in ‘good’ category. Based on the values, it can be concluded that the learning multimedia based on adventure game is feasible for use in learning. Meanwhile, the method of quantitative research is done when analyzing data to improve students understanding after learning using the multimedia. Results of pretest and posttest given to learners who received treatment using the multimedia showed increase in understanding of learners after using learning multimedia based on adventure game Topic: Mathematics, Science, and Computer Science Education 199 Lesson Plan Profile Of Senior High School Biology Teachers In SubangElis Rohayati(*1) Sari Wulan Diana (2), Didik Priyandoko (2) 1) Biology Education, Postgraduates School, Universitas Pendidikan Indonesia 2) Department of Biology Education, FPMIPA, Universitas Pendidikan Indonesia Abstract Lesson plan have important role for biology teacher’s in teaching and learning process. The aim of this study was intended to gain an overview of lesson plan of biology teachers’ at Senior High Schools in Subang.The research method was descriptive method and subject of the research was biology teachers of public and private Senior high School in Subang which were the members of biology teachers association (MGMP Biologi) in Subang. Data was collected from 30 biology teachers that involved in the lesson plan composed and analyse of the lesson plans (RPP).The result of study showed that lesson plans’ (RPP) profile of Biology teachers in Subang in terms of 1) subject’s identity had good category with 83.33 % of average score, 2) analysis on basic competence in fair category with74.45 % of average score, 3) the compatibility of method/strategy was in fair category with average score of 72.22 %, 4) the compatibility of instrument, media, and learning resources in fair category with 71.11 % of average score, 5) learning scenario in good categorywith 77.00 % of average score, and 6) the compatibility of evaluation was in less category with 56.39 % of average score. It can be concluded that biology teachers in Subang were good enough tomade lesson plans, however in terms of the compatibility of evaluation needed to be fixed. Furthermore, teachers’ training forbiology teachers’ association (MGMP Biologi) was recommended to increase teachers’ skill to be professional teachers. Topic: Mathematics, Science, and Computer Science Education 200 Implementing Writing-to-Learn Strategy in Physics Learning to Improve Science Literacy of XI Grade Senior High School Students on Dynamics FluidNiken Resminingpuri, Parlindungan Sinaga, David E. Tarigan Departement of Physics Education, Faculty of Mathematics and Natural Sciences, Indonesia University of Education, Jl. Dr. Setiabudhi no. 229, Bandung 40154 Abstract The objective of this research was to find out the influence of implementing the writing-to-learn strategy in improve the science literacy ability. Writing-to-Learn strategy is learning strategy that used during learning activities be held in the class room and giving structured writing tasks to constructing students’ understanding. The method used was quasi-experimental design. Research design used in this research was nonequivalent control group design. The sample of the research was obtained from the research population, grade XI MIA (Mathematics and Natural Sciences) at one of the State Senior High School in Bandung, determined with purposive sampling. The subject of the research was 35 XI grade students. Testing the scientific literacy ability used the multiple-choice format with 5 possible answers with the total of 25 questions that the form has been equivalent to the PISA assessment instruments. The enhancement of the scientific literacy ability was analyzed using N-gain. The result revealed that the enhancement of experimental class =0,39 fell within the medium category. It revealed that the writing-to-learn strategies were improve the scientific literacy ability. Topic: Mathematics, Science, and Computer Science Education 201 An Analysis of Students’ Mental Model in Ideal Gas LawYani Indriyani, Johar Maknun, Aloysius Rusli School of Postgraduate Studies (SPs) of Universitas Pendidikan Indonesia (UPI), Bandung, West Java-Indonesia Abstract Students often have difficulties understanding abstract physics concepts, such as ideal gas law. This study examines high school students’ mental models of ideal gas law. An achievement test using 12 open ended questions was constructed and given to 31 senior high school students. The method of matching understanding levels to rubrics in order to reveal students’ mental models was used in this study. Students developed different mental model such as scientific model, synthetic model, and initial model. The result of the data analysis it was only a few students had a scientific model. Most students have initial model on Charles’s law and Gay-Lussac’s Law. Topic: Mathematics, Science, and Computer Science Education 202 Designing learning apparatus to promote twelfth grade students’ understanding of digital technology concept : A preliminary studiesMarlius;Ida Kaniawati and Selly Feranie Indonesia University of Education Abstract A preliminary learning design using relay to promote twelfth grade student’s understanding of logic gates concept is implemented to see how well it’s to adopted by six high school students, three male student and three female student of twelfth grade. This learning design is considered for next learning of digital technology concept i.e. data digital transmition and analog. This work is a preliminary studies to design the learning for large class. So far just a few research designing learning design related to digital technology with relay. It may due to this concept inserted in Indonesian twelfth grade curriculum recently. This analysis is focus on student difficulties trough video analysis to learn the concept. Based on our analysis, the recommended thing for redesigning learning is: students understand first about symbols and electrical circuits; the Student Worksheet is made in more detail on the assembly steps to the project board; mark with symbols at points in certain places in the circuit for easy assembly; assembly using relays by students is enough until is the NOTs logic gates and the others that have been assembled so that effective time. The design of learning using relays can make the relay a liaison between the abstract on the digital with the real thing of it, especially in the circuit of symbols and real circuits. Besides it is expected to also enrich the ability of teachers in classroom learning about digital technology. Topic: Mathematics, Science, and Computer Science Education 203 Application of augmented reality technology in space geometry learning for SMAN 6 Padang studentsRiska Amelia1 and Fazri Zuzano2 1 Study Program of Informatics and Computer Education, Universitas Bung Hatta 2 Mathematics Education Study Program, Universitas Bung Hatta Abstract Abstract. Augmented Reality (AR) is a technology that is becoming the present trends in various kinds of products in the world, this is due to the combination of script programming as well as 3-dimensional art that manifested into an application simultaneously. Augmented Reality enable combine objects in the virtual world to the real world in real time. This research aims to incorporate Augmented Reality technology into the instructional process by applying the learning material on the geometry of space. It is expected the participants of learning information and knowledge about the material optimal geometry of space. Application of the technology of Augmented Reality in learning methods help the learning process more innovative. The creation of learning material GeoAR this requires the camera as input source by the way read and track marker (marker) and tracking system. Geometry objects that exist on the application is made with the software design namely Blender, then Editor of AR using is Unity software. Topic: Mathematics, Science, and Computer Science Education 204 IMPLEMENTATION OF LEARNING CYCLE 5E LEARNING MODEL ON MULTIMEDIA BASED ANIMATION TO INCREASE COGNITIVE ASPECT OF VOCATIONAL STUDENTS IN BASIC MATERIALS ROUTING SUBJECTNur Putri Novianty (a), Dedi Rohendi (b), Eki Nugraha (c) Department of Computer Science Education Faculty of Mathematics and Sciences Education Indonesia University of Education, Bandung Abstract ABSTRACT― This research is conducted based on several problems which emerged during the network learning course, especially the basic routing concepts. One of the problems is the limitation of interactive learning that make the learning seems less attractive. Yet, network design is one of the subjects which require deep understanding from the students. To deal with the problem, computer-based multimedia is used since it is capable in visualizing difficult concepts. Meanwhile, the application of multimedia animation during the learning process can attract students interest. The 5E learning cycle model employs constructivist approach to increase students understanding. Hence, this research aims to: 1) create and design multimedia animation based on 5E learning cycle to improve vocational students cognitive function regarding basic routing concepts. 2) Compute the increase of cognitive function after implementing the multimedia. 3) Find out students response toward 5E learning cycle model on animation-based learning which aims to enhance their cognitive function of basic routing concepts. Moreover, System Development Life Cycle method, which consists of analysis phase, design phase, development, implementation, and evaluating phase, is adapted in this research. Multimedia is applied in one of vocational school in Bandung. The result indicated: 1) the multimedia has successfully developed and revealed to be decent by the media experts along with the subject-matter experts approximately 78^ and 83.35%; 2) the implementation of multimedia increased the cognitive function for about 0,5 point of gain index which considered as average; 3) the learning model received a "good" response from the student with 82.11 percent. Topic: Mathematics, Science, and Computer Science Education 205 Application of ASSURE Model Assisted Multimedia Interactive Learning on Data Communication Subjects to Improve Comprehension of Vocational School StudentsCecep Fery Fitra Gumilar, Heri Sutarno, Eddy Prasetyo Nugroho Departemen Pendidikan Ilmu Komputer FPMIPA Universitas Pendidikan Indonesia Abstract This research aimed to apply ASSURE model assisted multimedia interactive learning on data communication subject. This also aimed to know the student’s improvement which in the implementation apply ASSURE model which aided by multimedia learning. This research is held in SMK Negeri 1 Katapang. This multimedia learning’s stages of development consists of the stage of analysis, design, development, implementaion, and assessment phase. The assessment data is obtained from the test which is conducted by students after using multimedia learning. While for the assessment data on the multimedia is using questionnaire which is designed based on Learning Object Review Instrument (LORI) version 1.5 and addressed for material experts and media experts, and the student as the user of this multimedia application also. From this research, it is found that (1) the multimedia assessment by the media expert on interactive multimedia learning using the ASSURE model of 85 and included in the excellent category, the multimedia assessment by the material experts of 80 and included to the good category, and the multimedia assessment by student assessment of 85 and included to the excellent category; (2) the application of the ASSURE model with the help of multimedia learning can improve students comprehension as seen from the increase of upper group gain value of 0,51 which is included into the medium category, the gain value for the middle group is 0,49 which is included to the medium category and the gain value for the lower group is 0,53 which is included into the medium category. (3) the highest increase was obtained by the lower group while the lowest increase was obtained by the middle group. (4) the application of ASSURE model in this research is more effective when given to the lower group. Topic: Mathematics, Science, and Computer Science Education 206 Analysis of High School Students Understanding about Ideal Gas LawYohanes Anri (a*), Johar Maknun (a), Didi Teguh Chandra (a) a) School of Postgraduate, Indonesian University of Education Jalan Setiabudhi No. 229, Bandung, 40154, Indonesia. * yohanesanri[at]gmail.com Abstract The research was conducted with the aim to know students understanding profile about ideal gas law. Research was conducted on 12th grade in a high school in Bandung. The research uses descriptive research method with case-study design. Research data was collected using essay-test instrument that developed by researcher himself. Based on the result of the analysis of student answer, researcher found that most of the student still have low understanding about ideal gas law. Topic: Mathematics, Science, and Computer Science Education 207 Analysis of students critical thinking skills in socio-scientific isuues of biodiversity subject.Ayu Ratna Santiika (a*), Widi Purwianingsih (b), and Eni Nuraeni (b) a) Program Studi Pendidikan Biologi, Sekolah Pascasarjana Universitas Pendidikan Indonesia *santikaratnaayu[at]gmail.com b) Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia Abstract Critical thinking is an skills which students should have in order to face 21st century demand. Critical thinking skills can help people in facing their daily problem, especially problems which relate to science. This reasearch is aimed to analyze students critical thinking skills in socio-scientific issues of biodiversity subject. The method which is used in this research is descriptive method. The researxh subject is first-grade students’ in senior high school. This research used interview and open ended question which is clasified based on framework Inch: (1) question at issue, (2) information (3) purpose (4) concepts (5) assumptions, (6) point of view, (7) interpretation & inference, and (8) implication & consequences, then it will be assessed using by rubrics. The result of the data show that students critical thinking skills in socio-scientific issues of biodiversity subject is in low and medium category. Topic: Mathematics, Science, and Computer Science Education 208 Assessing Hyphotetical Learning Trajectory Teacher MathematicsAtikah Sari(a,b*), Didi Suryadi (c), Ernawulan Syaodih(d) a) Program Studi Pendidikan Dasar, Universitas Pendidikan Indonesia, Jl. Dr Setiabudi No. 229, Bandung 40154, Indonesia b) Dinas Pendidikan, Jl. Raya Padalarang – Cisarua KM 2, Kabupaten Bandung Barat, 40561, Indonesia *aatikahsarii[at]gmail.com c) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia d) Program Studi PGPAUD, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract The purpose of this study is to provide an alternative for teachers in preparing teaching materials tailored to the students learning trajectories. This study uses a case study with data collection is a triangulation technique that focuses on three 5th grade elementary school teacher. The results showed that by using the Hyphotetical Learning Trajectory teacher can prepare teaching materials in a coherent, logical, contextual, and date so that the quality of the learning process can be increased and the students can be more easily understand the subject matter. Also revealed that teachers in the classroom teaching practice is not in line with the lesson plans they have prepared beforehand. Based Hyphotetical Learning Trajectory implementation can be concluded that by arranging hyphotetical Learning trajectories of teachers will be increased knowledge and skills teaching. Topic: Mathematics, Science, and Computer Science Education 209 Cooperative Learning Model with High Order Thingking Skills Questions: Understand on GeometryPutri Permata Sari1, Budiyono2, and Isnandar Slamet3 1,2, and 3 Graduate Program of Mathematics Education, Teacher Training and Education Faculty, Sebelas Maret University Ir. Sutami Street 36A Kentingan, Jebres, Surakarta City, Central Java, INDONESIA, 57126 E-mail: putrigoe[at]gmail.com, budiyono53[at]yahoo.com, isnandar06[at]yahoo.com Abstract Geometry as one of the branch of mathematics have an important role in mathematrics study. The aim of this research is to find out the effect of learning model, emotional intelligence, and the interaction between learning model and emotional intelligence toward students’ mathematics achievement. This research is quasi-experimental research with factorial design 2 x 3. Population on this research were Senior High School students on 11th grade in Sukoharjo Regency, Central Java, Indonesia in academic year of 2016/2017, with 179 students as a sample. The sample was taken by using stratified cluster random sampling. According to the research findings, it could be concluded that: the student are taught by Think Aloud Pair Problem-Solving using HOTs questions provides better mathematics learning achievement than Make A Match using HOTs questions. High emotional intelligence students have better mathematics learning achievement than moderate and low emotional intelligence students, and moderate emotional intelligence students have better mathematics learning achievement than low emotional intelligence students. There is an interaction between learning model and emotional intelligence. The interaction between learning model and emotional intelligence affect mathematics learning achievement. In conclusion, the finding show to use an apropriate learning model can support learning activities become more meaningful and facilitate students to understand material so students achievement improve significantly. Further research needs to be conducted to explore the contribution of other aspects in cooperative learning modification toward mathematics achievement. Topic: Mathematics, Science, and Computer Science Education 210 STEM-Based Science Learning Implementation to Identify Student’s Personal Intelligences ProfilesB J P K Wiguna1 and I R Suwarma Universitas Pendidikan Indonesia Abstract Science and technology are rapidly developing needs to be balanced with the human resources that have the qualified ability. Not only cognitive ability, but also have the soft skills that support 21st century skills. Science, Technology, Engineering, and Mathematics (STEM) Education is a solution to improve the quality of learning and prepare students may be able to trained 21st century skills. This study aims to implement a STEM-based science learning and identifying the personal intelligences profile junior high school students. The method used in this research is pre experiment with the design of the study one group pretest-posttest. Samples in this study were 26 junior high school students taken using Convenience Sampling. Students personal intelligences profile after learning STEM-based science uses two instruments, self-assessment and peer assessment. Intrapersonal intelligence profile based self-assessment and peer assessment are respectively 69.38; and 64.08. As for interpersonal intelligence for self assessment instrument is 73 and the peer assessment is 60.23 Topic: Mathematics, Science, and Computer Science Education 211 The kinds of question asked by novice teacher in learning mathematicsL Zahra, T A Kusmayadi, and B Usodo Mathematics Education Department, Sebelas Maret University, Jl. Ir. Sutami No.36A, Jebres, Surakarta, Central Java 57126, Indonesia E-mail: labibazahra[at] gmail.com Abstract Abstract. This study described the kinds of question asked by novice teacher on mathematics learning process of senior high school. This study is descriptive analysis. The subject of this study are 2 novice teachers who teach mathematics on 10th grade. Result showed that at the preliminary activity, the question asked by the novice teachers based on the objective only compliance question. At the main activity, the novice teachers asked compliance question, prompting question, probing question and sometimes rhetorical question. The kinds of question based on the cognitive process dimension of Revised Bloom’s Taxonomy that was asked by novice teachers only remembering question. At the main activity, the novice teachers asked the question of remember, understand, apply, analyse and evaluate. At the closing activity, the teacher does not ask the question based on the objective and cognitive process dimension of Revised Bloom’s Taxonomy. Topic: Mathematics, Science, and Computer Science Education 212 Discovery Learning with SAVI Approach in Geometry LearningRifki Sahara, Mardiyana, Dewi Retno Sari Saputro Sebelas Maret University Abstract Geometry is one branch of mathematics that an important role in learning mathematics in the schools. This research aims to find out about Discovery Learning with SAVI approach to achievement of learning geometry. This research had conducted at Junior High School in Surakarta city. Research data had obtained through test and questionnaire. Furthermore, the data had analyzed by using two-way Anava. The results showed that Discovery Learning with SAVI approach gave a positive influence on mathematics learning achievement. Discovery Learning with SAVI approach provides better mathematics learning outcomes than direct learning. In addition, students with high self efficacy categories have better mathematics learning achievement than those with moderate and low self efficacy categories, while student with moderate self efficacy categories are better mathematics learning achievers than students with low self efficacy categories. There is an interaction between Discovery Learning with SAVI approach and self efficacy toward students mathematics learning achievement. Therefore, Discovery Learning with SAVI approach can improve mathematics learning achievement. Topic: Mathematics, Science, and Computer Science Education 213 CREATIVE THINKING PROCESSES OF VOCATIONAL STUDENTS IN MATHEMATIC PROBLEM POSINGMAYA KRISTINA NINGSIH, IMAM SUJADI, SRI SUBANTI SEBELAS MARET UNIVERSITY Abstract Creative thinking processes of vocational students in mathematic problem posing Maya Kristina Ningsih1, Imam Sujadi2, Sri Subanti 3 1, 2, 3 Post Graduate Program of Mathematics Education, Sebelas Maret University, Indonesia Jl. Ir. Sutami 36A Kentingan Jebres Surakarta 57126, INDONESIA may_kris78@yahoo.com Abstract This study aimed to describe the process of creative thinking vocational students with average learning motivation in mathematic problem posing. This research is qualitative research, and strategy is a case study. The subjects were 2 students class XI AP-4 SMK Negeri 2 Madiun in the 2016/2017 academic year, who have average learning motivation. Sample was taken by purposive sampling. A test of mathematic problems posing (MPP test) was then given to the selected subjects to identify their creative thinking process in mathematic problems posing. Periodical triangulation was applied to check data validity. Data analysis began by collecting data of MPP test and interview with the subjects, followed by describing students’ mathematic problems posing into short description. The research reveals that: (1) preparation; students read MPP test silently, observed the instruction and information on MPP test carefully, and observed what was known and was asked by the test by rereading the MPP test; (2) incubation; students tended to hesitate for a moment to find and arrange a strategy to solve what was asked in the test, and set a plan of posing mathematic problem less composedly while anxiously playing with pen; (3) illumination; students determined attribute and the other things necessary for posing mathematic problems by repeatedly hesitating, wrote the answer/solution to the problems on the answer sheet, and revised and corrected the answer when they made mistakes; (4) verification; students verbally explained the procedures, wrote the solution of the problems on the answer sheet, then revised and corrected the solution they have proposed. Key word: Creative thinking processes of vocational students with high learning motivation in mathematic problem posing Maya Kristina Ningsih1, Imam Sujadi2, Sri Subanti 3 1, 2, 3 Post Graduate Program of Mathematics Education, Sebelas Maret University, Indonesia Jl. Ir. Sutami 36A Kentingan Jebres Surakarta 57126, INDONESIA may_kris78@yahoo.com Abstract This study aimed to describe the process of creative thinking vocational students with average learning motivation in mathematic problem posing. This research is qualitative research, and strategy is a case study. The subjects were 2 students class XI AP-4 SMK Negeri 2 Madiun in the 2016/2017 academic year, who have average learning motivation. Sample was taken by purposive sampling. A test of mathematic problems posing (MPP test) was then given to the selected subjects to identify their creative thinking process in mathematic problems posing. Periodical triangulation was applied to check data validity. Data analysis began by collecting data of MPP test and interview with the subjects, followed by describing students’ mathematic problems posing into short description. The research reveals that: (1) preparation; students read MPP test silently, observed the instruction and information on MPP test carefully, and observed what was known and was asked by the test by rereading the MPP test; (2) incubation; students tended to hesitate for a moment to find and arrange a strategy to solve what was asked in the test, and set a plan of posing mathematic problem less composedly while anxiously playing with pen; (3) illumination; students determined attribute and the other things necessary for posing mathematic problems by repeatedly hesitating, wrote the answer/solution to the problems on the answer sheet, and revised and corrected the answer when they made mistakes; (4) verification; students verbally explained the procedures, wrote the solution of the problems on the answer sheet, then revised and corrected the solution they have proposed. Key word: creative thinking processes, high learning motivation, mathematics problem posing Topic: Mathematics, Science, and Computer Science Education 214 CLASSICAL MUSIC AND MATHEMATICS: CAN IT REALLY IMPROVE INTELLIGENCE?Karlimah Universitas Pendidikan Indonesia Abstract This study examines the application of classical music backsound in mathematics learning. The method used is quasi experimental design nonequivalent pretest-posttest control group in elementary school students in Tasikmalaya city, Indonesia. The results showed that classical music contributed significantly to the mathematical intelligence of elementary school students. The mathematical intelligence shown is in the cognitive ability ranging from the level of knowledge to evaluation. High level mathematical intelligence is shown by students in reading and writing integers with words and numbers. The low level of mathematical intelligence exists in projecting the story into a mathematical problem. The implication of this research is the use of classical music backsound on learning mathematics should pay attention to the level of difficulty of mathematics material being studied. Topic: Mathematics, Science, and Computer Science Education 215 Profile of Junior High School Student in Resolving Quadrilateral Conceptual Problems in terms of Emotional IntelligenceDwi Indarti, Mardiyana, Ikrar Pramudya Universitas Sebelas Maret Abstract This study aims to describe the profile of junior high school students in solving the problem of quadrilateral concepts in terms of the emotional intelligence category. The approach used in this research is qualitative-explorative approach with descriptive research type. The subjects of the study were two students from each category of emotional intelligence. Data collection is done based on problem solving test, interview and observation. The results showed that there were differences in the problem solving of quadrilateral concepts in each category of emotional intelligence. Topic: Mathematics, Science, and Computer Science Education 216 IMPLEMENTATION THE INTEGRATION RELIGIOUS VALUES ON BIOLOGY LESSON IN ISLAMIC BOARDING SCHOOL (Descriptive Study on Integrated SMA X Tasikmalaya)Enuy Nurjanah,a),Yusuf Hilmi Adisendjaja1,Mimin Nurjhani K1 Department of Biology, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi 229, Bandung 40 154, Indonesia a)E-mail: enuynurjanah45[at]gmail.com Abstract Abstract. Integrated learning religious values is one way to increase motivation to learn and shape the character of the students. This study aimed to describe the application of integrated biology teaching religious values in Islamic Boarding School. Research methods used in this research is descriptive research. Participants in this study involves the principal, vice principal part of the curriculum, Biology teacher, teacher of boarding schools, boarding school caretakers and 40 students of ten grade. The instruments used are interviews guidelines, notes field (observation) and the student questionnaire about Biology learning. The results showed that learning in boarding school X consists of two curriculum that are the National curriculum which implementation curriculum 2013 and school curriculum which implemented pesantren curriculum refer to the salafi’s pesantren curriculum (yellow book), but in the learning process biologycal material are not integrated with the religious values which contained in pesantren curriculum. Finding this study are: 1) the Biology teacher background did not know the relationship between biological materials studied in pesantren curriculum; 2) The school was not develop team teaching program, 3)the lack of teaching materials integrated religious values. Topic: Mathematics, Science, and Computer Science Education 217 The effect of reading assignments in guided inquiry learning on students critical thinking skillsAhmad Syarkowi Universitas Jambi Abstract The purpose of this study was to determine the effect of reading assignment in guided inquiry learning on senior high school students critical thinking skills. The research method which was used in this research was quasi-experiment research method with reading task as the treatment. Topic of inquiry process was Kirchhoff law. The instrument was used for this research was 25 multiple choice interpretive exercises with justification. The multiple choice test was divided on 3 categories such as involve basic clarification, the bases for a decision and inference skills. The result of significance test proved the improvement of students critical thinking skills of experiment class was significantly higher when compared with the control class, so it could be concluded that reading assignment can improve students critical thinking skills Topic: Mathematics, Science, and Computer Science Education 218 Didactical Design of Complex Variable Learning Material Based on Epistemology, Didactic, and Learning Trajectory to Enhance Undergraduate Students’ Mathematical Connection and Communication SkillEncum Sumiaty, Endang Dedy Department of Mathematics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi no. 229, Bandung 40154, Indonesia Abstract One of the important keys to improve undergraduate students’ learning process is by using a good learning material, especially for those who are from mathematics department. In this study, the learning material was developed not merely by considering the characteristic of the materials and supported by appropriate models, methods and approaches. Further than that, it also pays attention on learning obstacles faced by the undergraduate students from both internal and external perspectives. By this way, the learning material was made based on epistemology, didactic, and learning trajectory. This study was undertaken by applying Didactical Design Research (DDR) which has three analytical phases: didactical situation analysis prior; metapedidactical analysis; and retrospective analysis. This study was began with problems (concept founding or even concept reinforcement), then the problems was analyzed by the students by referring textbook for students and lastly making the teaching guide based on the learning obstacle, didactical, and learning trajectory. After learning process and learning obstacle test was done, an analysis was carried out and it shows that the didactical design successfully improved the undergraduate students’ connection and communication skill. However, it seems that the undergraduate students’ connection skill does not significantly affect to their communication skill. Topic: Mathematics, Science, and Computer Science Education 219 Developing Algebraic Thinking Ability in Secondary School Based on GenderWidya Kusumaningsih, Darhim, Tatang Herman, Turmudi 1. Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 2. Pendidikan Matematika, Universitas PGRI Semarang, Jl. Sidodadi Timur No. 24 Semarang 50125, Indonesia Abstract This study aims to developing students algebraic thinking ability in solving mathematics problems based on gender in grade VIII while learning polyhedron. This research uses qualitative method. The data then collected using: 1) Test methods; 2) Interview method is done to 2 male students who have high ability, 2 female students who have high ability, 2 male students who have medium ability, and 2 female students who have medium ability. The results showed that: 1) The algebraic thinking ability of high group male students in categories both in three to five components of algebraic thinking, superior in terms of reasoning and quick understand problems in working on the problem. 2) Algebraic thinking ability of high-class female student in the categories of both four algebraic thinking components, more diligent, tenacious, and meticulous in working on the problem. 3) The algebraic thinking ability of male group students is in enough categories on four to five algebraic thinking components, enough in reasoning and understanding problems in working on the problem. 4) Algebraic thinking ability of female group students is in enough category at most three component of algebraic thinking, diligent enough, tenacious, and meticulous in doing the problem. Topic: Mathematics, Science, and Computer Science Education 220 The investigation of science teachers’ experience in integrating technology into science teachingRika Rafikah Agustin, L Liliasari, P Sinaga, D Rochintaniawati Universitas Pendidikan Indonesia Abstract The use of technology into science learning encounters problems. One of the problem is teachers’ less technological pedagogical and content knowledge (TPACK) on the implementation of technology itself. The purpose of this study was to investigate how science teachers consider the implementation of technology into their class as technological pedagogical and content knowledge. Descriptive method was used to depict science teachers’ TPACK through questionnaire that consisted of five open questions besides demography questions. Subjects of this study were 28 science teachers in Bandung, Indonesia. The study was conducted in the context of teacher training. Result shows that science teachers’ consider the characteristic of concepts as main aspect for implementing technology into science teaching. This finding describes teachers’ high technological content knowledge. Meanwhile, science teachers’ technological knowledge was found to be still low since only few of them who can exemplify digital technology that can be implemented into several science concept. Therefore, training about technology implementation into science teaching and learning is necessary as a means to improve teachers’ technological knowledge. Topic: Mathematics, Science, and Computer Science Education 221 Mathematical Communication and its Relation in StatisticsNurhasanah Siregar and Tiur Malasari Siregar Universitas Negeri Medan Abstract This study aims to describe mathematical communication ability in undergraduate students of Civics Major who take basic statistics course in study year 2016/2017 at Universitas Negeri Medan. The design of this experiment study was using pre-test and post-test control group design. In this study, the experimental group received Knisley Model and the control group received Conventional Learning. The data then collected by using test of mathematical communication ability. Based on data analysis, it can be concluded that there is a difference of average improvement of mathematical communication ability between students in both groups. Thus the Knisley Model can be an alternative learning model to study in undergraduate students. Topic: Mathematics, Science, and Computer Science Education 222 Improving Self-Regulated Learning Junior High School Students Through Computer-Based LearningNurjanah, J A Dahlan Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia,Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia. Abstract This study is back grounded by the importance of self-regulated learning as an affective aspect that determines the success of student learning in learning mathematics. The purpose of this research is to see how the improvement of junior high school students self-regulated learning through computer based learning is reviewed in whole and school level. The research method used is quasi-experimental research (quasi experiment). This is because individual sample subjects are not randomly selected. The research design used is Pretest-Posttest Control Group Design. Subjects in this study were students of grade VIII junior high school in Bandung taken from high school (A) and middle school (B). The results of this study shows that the increase of the students self-regulated learning who obtain learning with computer-based learning is higher than students who obtain conventional learning. School-level factors have a significant effect on increasing of the students self-regulated learning. Topic: Mathematics, Science, and Computer Science Education 223 Promoting the Hydrostatic Conceptual Change Test (HCCT) With Four-tier Diagnostic Test ItemMuhammad Guntur Purwanto1*, Rani Nurliani1, Ida Kaniawati1, Achmad Samsudin1 1Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Bandung, Indonesia Abstract Hydrostatic Conceptual Change Test (HCCT) is a diagnostic test instrument to identify students’ conception on Hydrostatic field. It is very important to support the learning process in the classroom. Based on that point of view, the researcher decided to develop HCCT instrument test into four-tier test diagnostic items. The resolve of this research is planned as the first step of four-tier test-formatted HCCT development as one of investigative test instrument on Hydrostatic. The research method used the 4D model which has four comprehensive steps: 1) defining, 2) designing, 3) developing and 4) disseminating. The instrument developed has been tried to 30 students in one of senior high schools. The data showed that four-tier- test-formatted HCCT is able to identify student’s conception level of Hydrostatic. In conclusion, the development of four-tier test-formatted HCCT is one of potential diagnostic test instrument that able to classify the category of students who misconception, no understanding, understanding, partial understanding and no codable about concept of Hydrostatic. Topic: Mathematics, Science, and Computer Science Education 224 TTW and NHT in Problem SolvingRr C C Anthycamurty, Mardiyana, and D R S Saputro Universitas Sebelas Maret Jl. Ir. Sutami No. 36A, Jebres, Surakarta, Jawa Tengah 57126, Indonesia Abstract This study aims to analyze and determine the effect of the model on problems solving student math. Subjects in this study are students of class X SMK in Purworejo. the model adopted in this study was experimental class 1 given treatment using TTW type cooperative model and experiment class 2 was given treatment using cooperative model of NHT type. This study uses experimental quasi. Data analysis technique in this research use ANOVA two way. Data collection techniques in this study used tests to measure student problem solving and GEFT to measure students cognitive style. The results of this study indicate that there are differences in problem solving between experimental classes using TTW and NHT. The impact of this research is that students are able to remind the problem solving using the learning model and to know the cognitive style of the students. Topic: Mathematics, Science, and Computer Science Education 225 The Problem Solving Skills and Students Generated Representations, Profile of Senior High School Students in Bandung on The Topic of Work and EnergyYasni Alami, Dr. Parlindungan Sinaga, M.Si., Dr. Andhy Setiawan, M.Si Physics Education Department, School of Post Graduate Studies, Indonesia University of Education Abstract Based on recommendations from the Physics Education literature recommend the use of multiple representations to help students solve problems. The use of some good representations is considered important to study physics, so many good motivations to learn how students use multiple representations while solving problems and to learn how to solve problems using multiple representations. This study aims to explore the profile of high school students’ problem solving abilities and this study is part of a larger research focus on improving this ability in students in physics. The data is needed to determine the appropriate treatment to be used in subsequent research. A purposive sampling technique was used in this study and a survey was conducted to collect data. 74 students from one high school in Bandung were involved in this research. Topic: Mathematics, Science, and Computer Science Education 226 Design of multiple representation e-learning resources based on a contextual approach for the Basic Physics CourseFauzi Bakri, Dewi Muliyati Department of Physics Education, Universitas Negeri Jakarta, Jakarta, Indonesia Abstract This study aims to design e-learning resources with multiple representations character based on a contextual approach for the Basic Physics Course. The study uses the research and development methods accordance the model who developed by Dick & Carey. Content of learning is presented based on the syntax of contextual approach. Each concept is presented with more than one representation. All the learning resources are set so that it can be accessed with either on e-learning systems. The focus of this paper is how to design a good representation to be displayed in each stage of learning contextual syntax. Syntax developed by stages: relating, experiencing, applying, transferring, and cooperating. As for the resulting representation includes: concept map, video, figures, data tables of experiment results, charts of data tables, the verbal explanations, mathematical equations, problem and solutions example, and exercise. Topic: Mathematics, Science, and Computer Science Education 227 LOGICAL MATHEMATICAL INTELLIGENCE FOR PRESCHOOL CHILDRENAtiasih Postgraduate of Early Childhood Education, Universitas Pendidikan Indonesia, Bandung, Indonesia Abstract In everyday life, humans always interact with mathematics. Every activity be related to a number, logic, and creativity in solving problems including in early childhood education. Then, there are some problems arising caused by some factors, firstly, mathematics is one of the subjects in the national exam. Secondly, the logical math learning media used in learning are still less relevant. This article uses a study of literature that analyzes research on early childhood logical mathematical intelligence This paper aims to make parents and teachers realize that learning mathematics is not just limited to numbers and memorization. It will be better if we conduct teaching and learning process of logical math through plays. Logical math intelligence, which is the ability to use numbers well and also reason properly, means intelligent in dealing with numbers and smart in the art of logical thinking. Topic: Mathematics, Science, and Computer Science Education 228 Discovering and understanding the vector field using simulation in android appAgus Setyo Budi, Dewi Muliyati Department of Physics Education, Universitas Negeri Jakarta, Jakarta, Indonesia Abstract An understanding of vector fields concepts are fundamental parts of the electro-dynamics course. In this paper, we use a simple simulation that can be used to show qualitative imaging results as a variation of the vector field. Android application packages the simulation with consideration of the efficiency of use during the lecture. In addition, this simulation also trying to cover the divergences and curl concepts from the same conditions that students have a complete understanding and can distinguish concepts that have been described only mathematically. This simulation is designed to show the relationship between the field magnitude and its potential. This application can show vector field simulations in various conditions that help to improve students understanding of vector field concepts and their relation to particle existence around the field vector. Topic: Mathematics, Science, and Computer Science Education 229 Local Wisdom Of Cikondang Village Community In The Utilization Of Medicinal Plants As A Source Of Biology LearningYani Mulyani (a*), Ahmad Munandar (b), Eni Nuraeni (b) Department of Biology Education, Universitas Pendidikan Indonesia (UPI). Jl. Dr. Setiabudi 229, Bandung, 40154, Indonesia *yani.muliyani[at]yahoo.com Abstract Local wisdom of cikondang community in the utilization of medicinal plants has been done since a long time ago. Knowledge of medicinal plants based on experience and skills that have been passed down from one generation to the next. This study aims to analyze the knowledge of Cikondang community in the utilization of medicinal plants in the field of health and developing learning resources in the form of mapping of biodiversity materials on the use of medicinal plants. Qualitative descriptive method with emic and ethical approach to explain the relationship of public knowledge about the type and utilization of medicinal plants in the view of science. Data on knowledge of the use of medicinal plants obtained through interview techniques obtained from respondents as many as 40 heads of families. Cikondang community recognizes 27 commonly used medicinal plants. Family Zingiberaceae has a type that is more widely used as a medicinal plant. Parts of plants used for medicine are leaves, rhizomes, tubers, roots, stems, fruit and bark. The most widely used plant part is the leaves. Medicinal plants used by boiling, shredded, crushed, baked, soaked or used directly, how to use the plant to be the most widely use method was boiling the materials. Utilization of medicinal plants as a form of local wisdom Cikondang community developed into mapping biodiversity material. Topic: Mathematics, Science, and Computer Science Education 230 Redesign of Student’s Worksheet on Basic Physics Experiment Based on Student’s Scientific Process Skills Analysis in Melde’s LawMuhamad Gina Nugraha*), Setiya Utari, Duden Saepuzaman, Firman Nugraha Departemen Pendidikan Fisika FPMIPA Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No.229, Bandung 40154 Abstract Scientific process skills (SPS) are an intellectual skill to build knowledge, solve problems scientifically, train thinking skills as well as a very important part of the inquiry process and contribute to scientific literacy. therefore SPS is very important to be developed. This study aims to develop Student Worksheets (SW) that can trace SPS through basic physics experiments (BPE) on Melde’s law. This research uses R&D method involving 18 prospective physics teacher who take the BPE course as a sample. The research instrument uses an SW designed with a SPS approach that have been reviewed and judged by expert, which includes observing, communicating, classifying, measuring, inferring, predicting, identifying variable, constructing hypothesis, defining variable operationally, designing experiment, acquiring and processing data to conclusions. The result of the research shows that the students SPS has not been trained optimally, the students answers are not derived from the observations and experiments conducted but derived from the initial knowledge of the students, as well as in the determination of experimental variables, inferring and hypothesis. This result is also supported by a low increase of conceptual content on Melde’s law with n-gain of 0.40. The research findings are used as the basis for the redesign of SW Topic: Mathematics, Science, and Computer Science Education 231 The Effect Of Remediation on Reducing Misconception: A Meta-Analysis Of Student Thesis on Physics EducationErwina Oktavianty, Haratua TMS, Tomo Djudin Physics Education FKIP Tanjungpura University Abstract The purpose of this study was to compare the effects of various remediation practices in reducing the number of student misconceptions on physics concepts. This research synthesizes 68 thesis undergraduate students of physics education which is published in Tanjungpura University library 2009-2016 period. In this study, the guidance in the form of checklist in conducting the study arranged to facilitate the understanding and assessment of the scientific work. Based on the analysis result, the average value of effect size of all the synthesized thesis is 1.13. There are six forms of remedial misconceptions performed by physics education students, ie re-learning, feedback, integration of remediation in learning, physical activity, utilization of other learning resources and interviews. In addition, sampling techniques and test reliability were found to have contributed to the effect size of the study. Therefore, it is expected that the results of this study can be considered in preparing the remediation of misconceptions in future physics learning. Topic: Mathematics, Science, and Computer Science Education 232 Environmental Literacy in Agriculture and Coastal Areas.N Pujianti1*, A Munandar2 and W Surakusumah2 departement biology, universitas pendidikan indonesia Abstract This research aim to know the environmental literacy of junior high school students in agricultural and coastal areas in Subang based on knowledge, cognitive skills and attitudes toward the environment. This research used descriptive method. The subjects of the research were 7th grade students of junior high school and involved 62 participants in agriculture area and 64 participants in coastal area. The instrument of environment literacy adapted from Middle School Environment Literacy Survey (MSELS) and adapted to the context of agricultural and coastal area. The results showed that: environmental literacy in agricultural areas is 169.30 with moderate category and environmental literacy in the coastal area is 152.61 in the moderate category. Topic: Mathematics, Science, and Computer Science Education 233 Mathematical Model of Filariasis TransmissionHusty Serviana Husain Universitas Pendidikan Indonesia Abstract Lymphatic filariasis or elephantiasis has been identified as the second leading cause of permanent and longterm disability in the world. Lymphatic filariasis is a parasitic worm transmitted by mosquitoes that affects and disturbs the lymphatic system of the human body. I will show a simple mathematical model without any treatment. Topic: Mathematics, Science, and Computer Science Education 234 Teaching using Moodle in Mathematics EducationAgung Handayanto, Supandi Supandi, Lilik Ariyanto, Supriyono Purwosaputro Department of Mathematics Education, Faculty of Mathematics, Science and Information Technology Education, Universitas PGRI Semarang, Indonesia Abstract This research was an implementation of e-learning using Learning Moodle Learning Modeling System (LMS). This study aims to determine the effect of the treatment conducted on the subject of the students. In this study selected five groups taken at random. The initial score uses the midterm test scores and the final grade is taken from the final exam result of the semester. The final grade is taken after the class is taught by learning using LMS Moodle. The results showed that there is a significant increase of exam results on the final exam of the semester. This result is supported by the increase of student interest in learning after using LMS Moodle, where the dispoissi scale of the questionnaire results given to the students get a high score. Thus this research is effective to improve the value of student learning outcomes Topic: Mathematics, Science, and Computer Science Education 235 Analysing Student Errors on Fraction in the Number LineS Widodo; T Ikhwanudin Universitas Pendidikan Indonesia Abstract The objectives of this study are to know the type of student errors when they deal with fraction on the number line. This study used qualitative with descriptive method, and involved 31 sixth grade students at one of the primary schools in Purwakarta, Indonesia. The results of this study are as follow, there are four types of student’s errors: unit confusion, tick mark interpretation error, partitioning and un partitioning error, and estimation error. We recommend that teachers should: strengthen unit understanding to the students when studying fractions, make students understand about tick mark interpretation, remind student of the importance of partitioning and un partitioning strategy, and teaches effective estimation strategies. Topic: Mathematics, Science, and Computer Science Education 236 Environmental literacy based on educational backgroundAnggraini Agfar, Achmad Munandar, Wahyu Surakusumah Universitas Pendidikan Indonesia Abstract This research aims to examine attitude, knowledge and cognitive skill. To collect data we used survey method, was conducted in Pahawang, Lampung. Respondents of this research is coastal society of Pahawang, 114 participants determined using purposive sampling, from two areas in the village, Pahawang and Penggetahan. Data were analyzed using both quantitative and descriptive. Environmental literacy of the society which is primary school graduate is moderate category (85,61), consist of 38.90% in low category and 61.10% in moderate category. Environmental literacy of junior high school graduate is moderate (99.36), consist of 12% in low category, 76% in moderate category and 12% in high category. Environmental literacy of senior high school graduate is moderate (108.85), consist of 84.90% moderate category and 15.10% in high category. But, undergraduate society is high category (118,53). Details 0% low category, 52.94% moderate category and 47.06% in high category. This finding research has revealed that the educational background affect the level of environmental literacy. Topic: Mathematics, Science, and Computer Science Education 237 Designing Learning Media to Exercise Science Literacy on Heat and Temperature Topics for Senior High School StudentsEka Cahya Prima, Setiya Utari, Didi Teguh Chandra, Lilik Hasanah, Dadi Rusdiana Department of Science Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Bandung 40154, Indonesia Department of Physics Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Bandung 40154, Indonesia Abstract The science literacy competence is defined as the use of science knowledge and the ways of science to solve problems or decision-making. This competence is important to be comprehended because the education curriculum change happened in well-developed countries leads to the provision of science literacy. However, the result of PISA study illustrates that Indonesian students are positioned at PISA level 1. It means that they can only explain the simple science phenomenon. This result indicated that science learning has not facilitated science literacy optimally. The finding is also supported by the teachers’ difficulty in presenting science phenomena to construct science knowledge and contextual problems to exercise and assess students’ science literacy. Therefore, it is needed to develop several ways to train science literacy including its learning media. This descriptive-qualitative research will provide an overview of developing ways to exercise science literacy equipped with science learning media. These two type media are used to construct science knowledge and to serve problem-solving laboratory. The equipment relates to science literacy exercises as well as its evaluation. Our developed media discuss heat and temperature topic. The work explains the concept of thermal expansion and heat transfer. Moreover, the developed learning media refers to context domains as presented by PISA 2015 frameworks. The context domains consist of the personal context showing the personal energy use and the scientific aspects while the local context presenting the development of new materials and equipment. Topic: Mathematics, Science, and Computer Science Education 238 Misconception Study of Students’ Statistical Reasoning Skill on Descriptive Statistics CourseI Maryati and N Priatna 1Sekolah Tinggi Keguruan dan Ilmu Pendidikan (STKIP) Garut, Jl. Pahlawan No. 32 Garuut 44151, Indonesia. 2Departement of Mathematics Education, Postgraduate Student, University of Indonesia Education, Jl. Dr. Setiabudhi 229, Bandung 40154, Indonesia. 3University of Indonesia Education, Jl. Dr. Setiabudhi 229, Bandung 40154, Indonesia. Abstract Reasoning skill is needed for everyone to face globalization era, because every person have to be able to manage and use information from all over the world which can be obtained easily. Statistical reasoning skill is the ability to collect, group, process, interpret, and draw conclusion of information. Developing this skill can be done through various levels of education. However, the skill is low because many people assume that statistics is just the ability to count and using formulas and so do students. Students still have negative attitude toward course which is related to research. The purpose of this research is analyzing students’ misconception in descriptive statistic course toward the statistical reasoning skill. The observation was done by analyzing the misconception test result and statistical reasoning skill test; observing the students’ misconception effect toward statistical reasoning skill. The sample of this research was 32 students of math education department who had taken descriptive statistic course. The mean value of misconception test was 49,7 and standard deviation was 10,6 whereas the mean value of statistical reasoning skill test was 51,8 and standard deviation was 8,5. If the minimal value is 65 to state the standard achievement of a course competence, students’ mean value is lower than the standard competence. The result of students’ misconception study emphasized on which sub discussion that should be considered. Based on the assessment result, it was found that students’ misconception happen on this: 1) writing mathematical sentence and symbol well, 2) understanding basic definitions, 3) determining concept that will be used in solving problem. In statistical reasoning skill, the assessment was done to measure reasoning from: 1) data, 2) representation, 3) statistic format, 4) probability, 5) sample, and 6) association. Topic: Mathematics, Science, and Computer Science Education 239 IMPLEMENTATION OF RASCH MODEL WITH MAXIMUM LIKELIHOOD ABILITY ESTIMATION BASED ON COMPUTERIZED BASED TEST FOR IDENTIFICATION THE STUDENTS’ ABILITY ACHIEVEMENTLisna Fauziah Universitas Pendidikan Indonesia Abstract This study aims to analyze the results of answers based on rasch modeling and implement a learning evaluation system for the identification of student achievement outcomes. The computer-based assessment instrument is a very promising tool for educational measurement. A good measuring instrument is a metric that meets the requirements and is able to produce information that contains the smallest possible errors. Rasch model was chosen because of several advantages possessed. The data used in this study in the form of data of 30 students and 30 items about. The results of this study were: (1) Rasch modeling can predict the missing data, which is based on a systematic response pattern. The results of statistical analysis to be more accurate in research conducted. the prediction ability of rasch modeling will result in the best possible value of the missing data (2) parameter estimation using maximum likelihood note that from 23.3% has very low latent trait, 26.7% of students have very high latent trait and 50% . Based on the above analysis a teacher can see students kemmapuan through assessment analysis with rasch model is recommended for each teacher in order to assist teachers in knowing the ability and learning outcomes of students. Topic: Mathematics, Science, and Computer Science Education 240 Connecting qualitative observation and quantitative measurement for enhancing quantitive literacy in plant anatomy courseEni Nuraeni and Adi Rahmat Universitas Pendidikan Indonesia Abstract Forming of cognitive schemes of plant anatomy concepts is performed by processing of qualitative and quantitative data obtained from microscopic observations. To enhancing student’s quantitative literacy, strategy of plant anatomy course was modified by adding the task to analyze quantitative data produced by quantitative measurement of plant anatomy. Participant in this study was 24 biology students and 35 biology education students. Quantitative Literacy test, complex thinking in plant anatomy test and questioner used to evaluate the course. Quantitative literacy of biology education students is better than biology students Topic: Mathematics, Science, and Computer Science Education 241 Analysis of biological learning resoursces based on scientific inquiryNiki Anggraeni*, Yusuf Hilmi Adisendjaja, Amprasto Program Studi Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia *anggraeniniki[at]gmail.com Abstract This study aims to obtain information about the scope of scientific inquiry on high school biology learning resources. The analysis of textbooks and worksheets of Biology students is necessary because a large number of School Biology teachers use textbooks and student worksheets as a reference for learning in the classroom. This research is a descriptive research. The population in this study is all the material on the textbooks and worksheets of high school Biology students are analyzed. The samples in this study are several pages in the textbook analyzed, taken as much as 20% and several chapters on the student worksheets taken at random. Samples taken with multistage sampling technique. Textbooks and student worksheets were analyzed by three textbooks and three student worksheets from the same publisher. The data is collected with a category sheet that contains indicators of scientific inquiry aspects which are then identified in each paragraph, the occurrence of these indicators is converted into percentages for each learning resource and category. The results show that the whole textbook only contains some aspects of scientific inquiry, while the results of LKS analysis as a whole has scientific aspects of inquiry but the percentage of occurrence is still below 40%. Thus it can be concluded that the source of learning Biology used by students has not reflected scientific inquiry. Topic: Mathematics, Science, and Computer Science Education 242 Card-game and Molecular Model to address students’ misconceptions of Molecular geometry Based on Valence Shell Electron Pair Repulsion Theory (VSEPRT) in the UK and IndonesiaErlina, Chris Cane, Dylan P Williams Department of Chemistry, University of Leicester, UK GENIE, Centre of Excellence in Teaching and Learning, University of Leicester, United Kingdom Chemistry Education Study Program, Universitas Tanjungpura, Pontianak, Indonesia Abstract Research shows that misconceptions remain a key problem in chemistry education, many related to abstract concepts. Students may find it particularly difficult developing effective mental models of these. Determination and visualisation of the shapes of molecules using Valence Shell Electron Pair Repulsion Theory (VSEPRT) is an example of the abstract concept that chemistry students often find difficult. Concepts may be better understood if the learning process is supported by innovative, interactive learning resources. In order to address conceptual difficulties students may encounter when using VSEPRT, a card-game has been developed which is supported by simple molecular models. The card-game gives students the opportunity to work through the steps required to predict the shape of a molecule in an engaging manner which promotes social learning. An action research methodology has been used to design, develop and evaluate the card-game. Learning resources were piloted at the University of Leicester (year-one Natural Sciences students) and modified based on feedback received. The card-game was then used as part of the first-year Chemistry Education programme at Tanjungpura University, Indonesia. After using the resources, the average student score pre and post-test increased by 25.7 point. Results indicate that the card-game model helped enhance students’ understanding of VSEPRT. Topic: Mathematics, Science, and Computer Science Education 243 Butterfly House as a Genetic Learning MediaM Halimah1,2 a) , C Tresnawati2, N Nurdiani2 1 Science Education Studies Program, School of Postgraduate Universitas Pendidikan Indonesia Jl. Dr. Setiabudi No. 229, Bandung 40 154, Indonesia 2 Biology Education Study Program, Faculty of Education Universitas Pasundan Bandung Indonesia. Jl. Tamansari No.6-8, Bandung 40116, Indonesia Abstract Abstract: Implementation of a good learning process should use appropriate learning media and can support contextual learning, and one such medium is a butterfly house. This study aims to determine the effectiveness of the butterfly house as a means of learning media in improving student learning outcomes biology teacher candidate in the genetic course. The research method is quasi-experiment. The result of the research shows that there is an increase of student learning result of biology teacher candidate using butterfly house as a medium of learning in Genetics course significantly in the medium category. This increase is not in the high category because there are many technical obstacles in the process of preserving butterflies, but these are the technical constraints that make the process of solving the problem in maintaining butterflies can be honed. Thus the use of butterfly house as a learning medium of Biology is to bridge the difficulty of studying butterflies in the wild and lack of study of butterflies using the media animation. Topic: Mathematics, Science, and Computer Science Education 244 The Role of Parallel Coordinates Concept in Analytic Geometry Classroom: An InvestigationFarida Nurhasanah, Jozua Sabandar, Yaya S. Kusumah, Didi Suryadi Universitas Sebelas Maret Universitas Pendidikan Indonesia Abstract Abstract. As one of the non-conventional mathematics concepts, Parallel Coordinates is potential to be learned by pre-service mathematics teachers in order to give them experiences in constructing richer schemes and doing abstraction process. Unfortunately, the study related to this issue is still limited. This study wants to answer a research question “to what extent the abstraction process of pre-service mathematics teachers in learning concept of Parallel Coordinates could indicate their performance in learning Analytic Geometry. This is a case study that part of a larger study in examining mathematical abstraction of pre-service mathematics teachers in learning non-conventional mathematics concept. Descriptive statistics method is used in this study to analyze the scores from three different tests: Cartesian Coordinate, Parallel Coordinates, and Analytic Geometry. The participants in this study consist of 45 pre-service mathematics teachers. The result shows that there is a linear association between the score on Cartesian Coordinate and Parallel Coordinates. There also found that the higher levels of the abstraction process in learning Parallel Coordinates are linearly associated with higher students achievement in Analytic Geometry. The result of this study shows that the concept of Parallel Coordinates has significant role for pre-service mathematics teachers in learning Analytic Geometry Topic: Mathematics, Science, and Computer Science Education 245 The Development of Interactive Mathematics Learning Material Based on Local Wisdom with .swf FormatM K Abadi, E C M Asih, and A Jupri Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract Learning materials used by students and schools in Serang district are lacking because they do not contain local wisdom content. This study is to improve the deficiencies in learning materials used by students by making interactive materials based on local wisdom content with format .swf. The method in this research is research and development (RnD) with ADDIE model. In making this interactive learning materials in accordance with the stages of the ADDIE study. The results of this study include interactive learning materials based on local wisdom. This learning material is suitable for digital students. Topic: Mathematics, Science, and Computer Science Education 246 Analysis of the Process of Critical Thinking of Junior High School Students in Solving Geometric Problems in terms of V-A-K Learning Styles ModelRahadiyan Bayu Hananto, Tri Atmojo Kusmayadi, Riyadi Departement of Mathematics Education, Faculty of Education and Teacher Training, Sebelas Maret University Abstract Critical thinking is one of the factors that influence students mathematical achievement. The reality in teachers has not developed critical thinking in every learning, so students can only do the problem well, but have not applied a critical attitude to the problems in everyday life. In addition, the learning style of students is not considered at the time of the learning process, so there are students who were harmed because the applied method can not adequate all learning styles of students. Thus, it is necessary to analyze the critical thinking process of students based on learning styles. The focus of research on the process of critical thinking of junior high school students in the material of the cube. This research uses descriptive method that aims to analyze the critical thinking process of students in solving geometry problem especially the building of flat side room (cube) on each visual, auditory and kinesthetic learning style applied to 3 students. Data collection was done through test, interview, and observation. The results showed that the students critical thinking process in identifying and define steps for each learning style has similarities in solving problems and critical thinking differences seen in enumerate, analyze, list, and self-correct steps. The process of critical thinking of students with kinesthetic learning style is best compared to the thinking process visual and auditory learning styles. Topic: Mathematics, Science, and Computer Science Education 247 COMPARISON OF PEER-TUTORING LEARNING MODEL THROUGH PROBLEM-SOLVING APPROACH USING TRADITIONAL MODEL OF TEACHING ON COGNITIVE ABILITY OF GRADE 10 STUDENTS AT SMKN 13 BANDUNG ON THE TOPIC OF STOICHIOMETRYAjen Zaenal Hayat1,a),W Wahyu2 and Kurnia2 Chemistry Department, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to examine differences in cognitive abilities between students taught using cooperative learning model of peer tutoringand traditional methods for grade 10 vocational high school students with stoichiometry as the topic of discussion. The research method used is a pre-experiment with one group pre-test post-test design. Participants involved in this research are 64 students of grade 10 in SMK Negeri 13 Bandung. The sample of class X AK 2 were taught using cooperative learning model of peer-tutoring and class X AK 5 using traditional learning model. Instruments used in the study include written tests and questionnaires. Testing includes normality test, homogeneity test, t test and N-Gain. Data processing uses Microsoft Excel 2007 and IBM SPSS 24 program. The results of researchdata processing shows normal and homogeneous distribution of sample. For the pretest we get the t test value with sig. (2-tailed) 0.904, for post-test we get t test value with sig (2-tailed) 0,000, and N-Gain obtained t test value with sig.(2-tailed) 0.000, this indicates there is no difference of cognitive ability of student before the application of cooperative learning model of peer tutoring (0,904>0,05) and there is difference of cognitive ability of student between experimental class and control class after the implementation of the learning model. The mean for the experimental class is 76.26 and the mean for the control class is 57.09 then the highest value for the experimental class is 99.00 and the highest value for the control class is 82.00. From the data it can be concluded that the learning outcomes with cooperative learning model of peer tutoring method is better than the traditional learning model. Topic: Mathematics, Science, and Computer Science Education 248 Investigation to Reduce Students Misconception in Energy MaterialM D Wijayanti, S B Rahardjo, S Saputro, S Mulyani Universitas Sebelas Maret Abstract The purpose of this study is to analyze the misconception of Teacher Candidate of Elementary School (PGSD) on energy materials. This research is expected to be a common misconception in teaching and learning activities. One solution to overcome misconceptions is by investigation. This study uses qualitative research. The subject of this research needs 35 students. Data analysis is done by comparing the observation and test results. The results of this study is the result of students learning outcomes through cycle I and cycle II. The first cycle is due to overweight misconceptions of 18.57% and cycle II of 35.71%. Misconception can be caused by a procedural negligence. Students of PGSD Are examined to show if they understood in a simple movement problem which needs a neverse proportionality concept, to find out a way to prevent misunderstanding. The examination may consist of the question of energy materials by different representation for each student. The conceptual knowledge of the students show incorrectness because they feel confused of existing knowledge they got in their daily lives. It can cause scientific misunderstanding. The declining in student misconceptions is caused by investigation process. Search and data collection are helpful in improving their thinking skills. Topic: Mathematics, Science, and Computer Science Education 249 High School Students’ Health Literacy Profile Based on Knowledge, Attitude and Students’ Behavior to Health of RespirationW Widiyawati1*, A Fitriani2 and D Priyandoko2 1Biology Education, Postgraduate’s School, Universitas Pendidikan Indonesia, 2Department of Biology Education, FPMIPA, Universitas Pendidikan Indonesia Jalan Dr. Setiabudhi Nomor 229, Bandung 40154, Indonesia Abstract This research aims to know at the high school students’ health literacy profile based on knowledge, attitude and students’ behavior to health of respiration. The research method uses descriptive and involved 65 participants at senior high school students in the city of Ciamis. Research instruments for collect data are matter of knowledge and questionnaires sheets for attitude and students’ behavior. The analysis of data are quantitative descriptive analysis. The results showed that: students health literacy of respiration get mean 109,94, moderate category. Based on the above results, it can be concluded that students health literacy of respiration is enough, but it needs to be improved by the classroom learning in accompanied by changing some of the lesser habits in maintaining respiratory health. Topic: Mathematics, Science, and Computer Science Education 250 Facilitating Students’ Conceptual Development of Light Refraction through STEM-based Virtual LabMuhammad Rifqi Rofiuddin Universitas Pendidikan Indonesia Abstract The challenge of learning process in 21st century urge teachers to make innovation of teaching media such as virtual laboratory that aids to visualize microscopic phenomena. Development of STEM-based virtual lab that integrates science, technology, engineering and mathematics competency is essential to modify students’ conception by presenting the cognitive conflict through its animation feature. Descriptive method is implemented through purposive sampling of 8th grade students (n= 30). Data is analyzed by transcribing video and audio recordings of group discussion as well as questionnaire is implemented in order to investigate students’ response towards STEM-based virtual lab utilization. Cognitive mechanism of students’ conceptual development shows significantly at reconceptualization stage where a significant change in the nature of and relationship between concepts occurs, such as students are able to determine the correlation of ray propagation within lenses and curved mirror, analyze nature of image formation at different refraction index, apply the geometrical equation, and analyze the properties of lenses to solve hypermetropy and myopia symptom. Topic: Mathematics, Science, and Computer Science Education 251 The Profile of Problem-Solving and Lesson-Planning Ability of Students of Distance Higher Education in Science LearningWidiasih1a), A Permanasari2, Riandi3, and T Damayanti4 1 Department of Physics Education, Universitas Terbuka, Jl. Raya Pondok Cabe, Kota Tangerang Selatan 15418, Indonesia 2 Department of Chemistry Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 3 Department of Biology Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 4 Department of Political and Social Science, Universitas Terbuka, Jl. Raya Pondok Cabe, Kota Tangerang Selatan 15418, Indonesia Abstract This study aims to analyze the students problem-solving ability in science learning and lesson-planning ability. The method used is descriptive-qualitative. The subjects of the study were undergraduate students of Distance Higher Education located in Serang, majoring in Primary Teacher Education in-service training. Samples were taken thoroughly from 2 groups taking the course of Science Learning in Primary School in the first term of 2017, amounted to 39 students. The technique of data collection used is essay test of problem solving from case study done at the beginning of lecture in February 2017. The results of this research can be concluded that In-service Training of Primary School Teacher Education Program are categorized as quite capable in solving science learning problem and planning science lesson. Therefore, efforts need to be done to improve the ability of students in problem solving, for instance through online tutorials with the basis of interactive discussions. Topic: Mathematics, Science, and Computer Science Education 252 Student Thinking Process in Solving Word Problem solvingVertye Noor Khasanah, Budi Usodo, and Sri Subanti Sebelas Maret University Abstract Abstract. This research aimed to find out the thinking process of seventh graders of Junior High School in solve word problem solving of geometry. This study was descriptive qualitative research. The subject of the research was selected based on sex and differences in mathematical ability. Data collection was done based on student’s work test, interview, and observation. The result of the research showed that there was no differences of thinking process in each category of mathematics ability between male and female. However, obstacles of male with medium mathematics ability it took a long time on the step to make a planning settlement and lack of accuracy when carrying out the planning. While the obstacles of female with medium mathematics ability that it took a long time in step to understand the problem. The importance of knowing the thinking process of students in solve word problem solving that to minimize the occurrence of the same error in problem solving. The difference of thinking process so different also how to solve the problem, so that teacher can prepare the lesson which more appropriate with student thinking process to more easily in reaching maximal success. Topic: Mathematics, Science, and Computer Science Education 253 How to Practice Creative Thinking Skills Through Scaffolding on Biotechnology ContentIsmail Fikri Natadiwijaya1, Adi Rahmat2, Sri Redjeki2, Sri Anggraeni2 1 Biology Education Departement Wiralodra University/Postgraduate School UPI, 2Biology Education Departement UPI Abstract Biotechnology content is a applicative field of science, so that student in addition must have the ability to the basic concept must also be able to have creative thinking skills in applying the concept to solving problems through biotechnology products. Scaffolding provides basic skills for solving problems independently, where it provides structured learning support through the design of the program so it is expected to train the mastery of the concept and creative thinking skills of student. The research design was conducted using R & D method of research and development. The results of this study is a description of how the shape and characteristics of the program suggested, with the following results. 1) Scaffolding learning programs should provide basic skills for self-problem solving, where structured learning support is provided through program design, 2) Knowledge or cognitive structure is the first thing that is given to student, because without knowledge there will be no creative idea and 3) Scaffolding learning programs that train creative thinking skills are built through two phases, namely phase 1 in the form of concept development where students build their own knowledge, and phase 2 where students build creative thinking skills through the creation of biotechnology product ideas. Topic: Mathematics, Science, and Computer Science Education 254 Students’ Scientific Argumentation Performance in Learning Global WarmingSyifa Qalbiyatul Layyinah, Dr. Diana Rochintaniawati, M.Ed., Rika Rafikah Agustin, M.Pd. Indonesia University of Education Abstract The Aim of this research is to obtain general descriptions about: students’ scientific argumentation skill qualities in oral and written scientific argumentation in learning global warming; the correlation between oral and written scientific argumentation skill; the correlation between students’ concept mastery and scientific argumentation skill; and students’ perspective towards their scientific argumentation skill. The method used in this study was descriptive correlational research method. Seventh grade Indonesian students from lower secondary schools in Malaysia were tested. Students’ scientific argumentation quality determined based on Toulmin Argumentation Pattern and the level based on Erduran et al., (2004). The most argumentation appeared in both oral and written scientific argumentation is relatively low (level 2 of 5 levels). The higher quality of scientific argumentation is in oral argumentation, since oral argumentation gets higher percentage in level 4 and 5. There is no correlation between students’ oral and written scientific argumentation skill. Moreover, there is medium positive correlation between students’ concept mastery in oral and written scientific argumentation skill. Based on Likert scale on questionnaire and interview result, most students had positive perspective towards their scientific argumentation skill. Topic: Mathematics, Science, and Computer Science Education 255 DISCOVERY LEARNING MODEL WITH GEOGEBRA ASSISTED FOR ENHANCHING VISUAL THINKING ABILITYDadang Juandi and Nanang Priatna Indonesia University of Education Abstract ABSTRACT The practice of mathematics is more often associated with symbolic or algebraic modes of expression than with those are visual, this study change that.The main goal of this study is to improve the visual thinking ability of junior high school student through implementation the Discovery Learning Model with Geogebra Assisted. This objective can be achieved through study used quasi-experimental method, with non-random pretest-post test control design. The sample subject of this research consist of 62 junior school students in one of school in Bandung district. The required data will be collected through documentation, observation, written tests, interviews, daily journals, and student worksheets. The raw data obtained analysed quantitatively and interpretation qualitatively. The results of this study are: 1) Improvement students Visual Thinking Ability who obtain learning with applied the Discovery Learning Model with Geogebra Assisted is significantly higher than students who obtain conventional learning; 2) There is a difference in the improvement of students Visual Thinking ability between groups based on prior knowledge mathematical abilities (high, medium, and low) who obtained the treatment. 3) The Visual Thinking Ability improvement of the high group is significantly higher than in the medium and low groups. 4) The quality of improvement ability of high and low prior knowledge is moderate category, in while the quality of improvement ability in the high category achieved by student with medium prior knowledge. Topic: Mathematics, Science, and Computer Science Education 256 The Development of A Quadrilateral Module Based on Discovery Learning Model to Improve Students Mathematical Connection Ability Grade 7thErna Kuneni (a), Mardiyana (a), Ikrar Pramudya (a) a) Departement of Magister Mathematics Education, Faculty of Teacher Training and Education, Sebelas Maret University, Ir. Sutami St., 36A, Jebres, Surakarta, Central Java, 57126 Abstract Geometry is a branch of mathematics which gives a considerable contribution on the students’ failure in exams. One of reasons is because the geometry terms is full filled by linkages between the concept in mathematics are qiute complex. Based on geometric characteristics, in particular the existence of quadrilateral, recommended a discovery activities to discover the properties of some simple forms in there. In addition, through the discovery activities, open broad opportunities for students to be able to connect between ideas in mathematics. The aim of this research is to development a quadrilateral module based on discovery learning model to improve students’ mathematical connection. The methods used in this research is modification of ten stages of Research and Development (R&D) by Borg and Gall (1983). The population in this research is all students grade 7th in Junior High School 20 of Surakarta. Selected sample is choosen by randomly. Based on the stage of the method used, obtained a valid, practical, and effective module to improve students’ mathematical connection. The validator declares that the module can be used based on its consistency with theory. At the trial test, students expressed the response of agremeent against usage of the module with an average is 2.98 and the percentage of learning achievement is 85.72%. In the effectiveness test, 91% students in experiment class get increasing of mathematical connection ability and its increase is better than in control class which get learning by informative learning materials. Topic: Mathematics, Science, and Computer Science Education 257 Improving the argumentative skills of high school students through teachers questioning techniques and argumentative assessmentT P Kristianti, M Ramli, J Ariyanto Universitas Sebelas Maret Abstract Argumentation is a process to understand the complex concepts of science, in which students initiate and justify their claims on certain knowledge. This research aims to know how students argumentative skills improved by applying teachers questioning techniques and argumentative assessment through collaborative action research between student teacher who did teaching practicum, biology teacher, and supervisors. The action research was done in three cycles involving one class consisted of 36 eleventh graders. Lesson plans were developed collaboratively, and teaching practices were by the trainee teacher. In the reflective phase prior to the first cycle, learning processes were dominated by the teacher, hence students did not have sufficient opportunity to argue. Students were divided into two, 14 students were grouped as low achievement (LA) and 22 students were the high achievement (HA). Teacher questions and students responses were furtherly coded and interpreted following the level of argumentation. At the end of the third cycle, HA and LA students showed a significant change in argumentative skills responded the teachers questions. However, only four LA students who actively argued. Students from HA groups also showed the improvement on the level of argumentation, where they move from level 1 to 3. Topic: Mathematics, Science, and Computer Science Education 258 Students’ conceptions analysis on some electricity conceptsDidik Eko Saputro, S Sarwanto, B Purnama, D Ratnasari 1Program Magister Pendidikan Fisika, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Kentingan, Surakarta 57126, Indonesia 2Program Magister Ilmu Fisika, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Kentingan, Surakarta 57126, Indonesia 3Program Magister Pendidikan Sains, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Kentingan, Surakarta 57126, Indonesia Abstract Abstract. This research is aimed to analyse students conceptions on some electricity concept. This is a descriptive research with the subjects of new students of Sebelas Maret University. The numbers of the subject were 279 students that consisted of some departments such as science education, physics education, chemical education, biology education and mathematics education in the academic year of 2017/2018. The instrument used in this research was the multiple-choice test with arguments. Based on the result of the research and analysis, it can be concluded that most of the students still find misconceptions and do not understand electricity concept on sub-topics such as electric current characteristic in the series and parallel arrangement, the value of capacitor capacitance, the influence of the capacitor charge and discharge towards the loads, and the amount of capacitor series arrangement. For the future research, it is suggested to improve students’ conceptual understanding with appropriate learning method and assessment instrument because electricity is one of physics material that closely related with students’ daily life. Topic: Mathematics, Science, and Computer Science Education 259 CHARACTERIZATION AND ANTIOXIDANT ACTIVITY OF PIGMENTS MICROALGAE OF Spirulina fusiformisHeli Siti Halimatul1*, Gun Gun Gumilar1, Ferawati1, Siti Aisyah1, Asri Peni Wulandari2 1) Program Studi Kimia, FPMIPA Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Jawa Barat-Indonesia 2) Program Studi Biologi, FMIPA Universitas Padjajaran, Jalan Raya Bandung-Sumedang Jatinangor Sumedang 45363, Jawa Barat-Indonesia. *heli[at]upi.edu Abstract Microalgae have some pigments which are potential to be used as functional colorant for foods and cosmetics industries. Here, this research was demonstrated the characterization and antioxidant activity assay of pigments from microalgae Spirulina fusiformis. The steps are pigments isolation using organic solvents, characterization with UV-Vis dan SDS-PAGE, and antioxidant activity assay using DPPH method. UV-Vis spectrophotometer observed peak absorbance at 619 nm, 665 nm and 445 nm which indicate phycocyanin, chlorophyll-a, and carotenoid pigments, respectively, were successful to be extracted from Spirulina fusiformis. SDS-PAGE characterization detected sub unit α and β of phycocyanin whose molecular weight were 13 and 17 kDa, respectively. The result of antioxidant activity assay show that the antioxidant activity of pigments of Spirulina fusiformis of methanol extracts, phycocyanin, n-hexane extract and acetone extracts were 16%, 9,8% 10%, and 13% respectively. Topic: Mathematics, Science, and Computer Science Education 260 Effectiveness of students work sheet based on mastery learning in genetics subjectR R P Megahati, F Yanti, and D Susanti Biology Education Department STKIP PGRI Sumbar, Padang, West Sumatera,Indonesia Abstract Genetics is one of the subject that must be followed by students in Biology education department. Generally students do not like the genetics subject because of genetics concepts difficult to understand and the unavailability of a practical students worksheet. Consequently, the complete learning process (mastery learning) is not fulfilled and low students learning outcomes. The aim of this study develops students worksheet based on mastery learning that practical in genetics subject. This research is a research and development using 4-D models. The data analysis technique used is descriptive analysis that describes the results of the practicalities of students worksheets based on mastery learning by students and lecturer of genetic subject. The result is the student worksheet based on mastery learning on genetics subject are to the criteria of 80,33% and 80,14%, which means that the students worksheet practical used by lecturer and students. Students worksheet based on mastery learning effective because it can increase the activity and students learning outcomes. The conclusion of this study is students worksheet based on mastery learning in the subject of genetics otherwise practical and effective. Topic: Mathematics, Science, and Computer Science Education 261 USING CONCEPT MAPS TO DESCRIBE UNDERGRADUATE STUDENTS’ MENTAL MODEL IN MICROBIOLOGY COURSEYanti Hamdiyati(1,2), Fransisca Sudargo(3), Sri Redjeki(3) and Any Fitriani(3) 1Doctoral Program, Graduate School of Science Education, Universitas Pendidikan Indonesia (UPI), Indonesia 2Biology Education Department, Universitas Pendidikan Indonesia (UPI), Indonesia 3Graduate School of Science Education, Universitas Pendidikan Indonesia (UPI), Indonesia Abstract The purpose of this research was to describe students’ mental model in a mental model based-microbiology course using concept map as assessment tool. Respondents were 5th semester Biology Education Department students at Universitas Pendidikan Indonesia. The mental modeling instrument used was concept maps. Data were taken on Bacteria sub subject. Concept map analysis was based on Novak and Gowin [11]. A concept map rubric was subsequently developed with a maximum score of 4. Quantitative data was converted into a qualitative one to determine mental model level (Byrne, 2011 with modification) namely: namely: emergent = score 1, transitional = score 2, close to extended = score 3, and extended = score 4. The results showed that mental model level on bacteria sub subject before the implementation of mental model based-microbiology course was at the transitional level. After implementation of mental model based-microbiology course, mental model was at transitional level, close to extended, and extended. This indicated an increase in the level of students’ mental model after the implementation of mental model based-microbiology course using concept map as assessment tool. Topic: Mathematics, Science, and Computer Science Education 262 Problem Based Learning with Scaffolding Technique on GeometryAnisa Septi Bayuningsih, Budi Usodo, and Sri Subanti Sebelas Maret University Abstract Geometry as one of the branches of mathematics has an important role in the study of mathematics. This research aimed to explore the effectiveness of Problem Based Learning (PBL) with scaffolding technique viewed from self-regulation learning toward students’ achievement learning in mathematics.The research data obtained through mathematic learning achievement test and self-regulated learning (SRL) questioner. This research employed quasi-experimental research. The subjects of this research on the junior high school in Banyumas Central Java. The result of the research showed that problem-based learning model with scaffolding technique is more effective to generate students’ mathematics learning achievement that direct learning (DL). This is because in PBL model students are more able to think actively and creatively. The high SRL category student has better mathematic learning achievement than middle and low SRL categories, and than the middle SRL category has better than low SRL category. So, there are interactions between learning model with self-regulated learning in increasing mathematic learning achievement. Topic: Mathematics, Science, and Computer Science Education 263 Improving the Critical Thinking Skills of Junior High School Students on Earth and Space Science (ESS) MaterialsLeni Marlina1*,2, Liliasari1, Bayong Tjasyono3, Sumar Hendayana1 1Lecturer of Physics Education, Sriwijaya of the university. Jl. Raya Palembang-Prabumulih KM 32 Ogan Ili 30662, Indonesia. 2Lectures at Departement of Science Education, Postgraduate School, Universitas Pendidikan Indonesia. Jl. Setiabudhi 229, Bandung 40154, Indonesia. 3Lecturer at Departement of Geoscience and Technology Faculty, Bandung of Institute Technology. Jl. Ganesa 10 Bandung 40154, Indonesia. Abstract Critical thinking skills need to be developed in students. With critical thinking skills, students will be able to understand the concept with more depth easily, be sensitive to problems that occur, understand and solve problems that occur in their surroundings, and apply the concepts in different situations. Earth and Space Science (ESS) material is part of the science subjects given from elementary school to college. This research is a test of the research program with the quantitative method. This study aims to investigate the improvement of critical thinking skills of students through training of science teachers in a junior high school in designing learning media for teaching ESS. With samples of 24 science teachers and 32 students of grade 7th in junior high school which is chosen by purposive sampling in a school in Ogan Ilir District, South Sumatra obtained average pre-test scores and posttest of students critical thinking skills are 52.26 and 67.06 with an average N-gain of 0.31. The results of this study show an increase in students critical thinking skills on the ESS material. Topic: Mathematics, Science, and Computer Science Education 264 Analysis Misconception of Integers in Microteaching ActivitiesIntan Indiati, Rina Dwi Setyawati Universitas PGRI Semarang Abstract This study view to analyze student misconceptions on integers in microteaching activities. This research used qualitative research design. An integers test contained questions from eight main areas of integers. The Integers material test includes (a) converting the image into fractions, (b) examples of positive numbers including rational numbers, (c) operations in fractions, (d) sorting fractions from the largest to the smallest, and vice versa; e) equate denominator, (f) concept of ratio mark, (g) definition of fraction, and (h) difference between fractions and parts. The results indicated an integers concepts: (1) the students have not been able to define concepts well based on the classification of facts in organized part; (2) The correlational concept: students have not been able to combine interrelated events in the form of general principles; and (3) theoretical concepts: students have not been able to use concepts that facilitate in learning the facts or events in an organized system Topic: Mathematics, Science, and Computer Science Education 265 Pre-Class Tutorial: An Instructional Strategy to Improve Student Understanding in PVT Diagrams in Thermodynamic CourseDuden Saepuzaman, Syakti Perdana Sriyansyah, Ika Mustika Sari, Saeful Karim Universitas Pendidikan Indonesia Abstract The Pre-Class Tutorial have been used to successfully improve deep conceptual undertanding and skills to draw and interpret the P-V-T diagrams in Thermodynamic Courses. This study was motivated by the previous research findings that students encounter the lack of conceptual understanding to draw and interpret the P-V-T diagrams to describes thermal process and Cycles. The analysis of the academic responses at written test shows that some of the students’ conceptual difficulties as follows. First, the biggest difficulty in each P-V, P-T, and V-T diagram is to draw an adiabatic proces. Second, The percentage of students who answer the P-V diagram correctly is higher than those who answer the P-T and V-T diagram. Third, Students prefer understanding thermal processes with their unique characteristic, such as isobaric with constant pressure, isotherm with constant temperature, and isochoric with volume constant. Finally, lack on understanding the concept of P-V-T diagram also impacts students’ understanding on various thermal cycles. Based on these findings, we developed pre-class tutorial that facilitate students either to construct their own concepts to draw and interpret the P-V-T diagram. The descriptive method was used to involve 34 third-years students of Physics Education Department The increased conceptual understanding was identified from the average of students’ achievement score on the instrument test. The findings showed that the use of pre-class tutorial effectively improves students’ conceptual understanding in draw and interpret the P-V-T diagrams to describes thermal process and Cycles. Topic: Mathematics, Science, and Computer Science Education 266 Design of embedded system to determine liquid refractive index based on ultrasonic sensor using an ATMega328Y Radiyono, S Surantoro, P Pujayanto, R Budiharti, Y S Respati, Didik Eko Saputro Physics Education Department, Sebelas Maret University, Jl. Ir. Sutami 36A Surakarta, Indonesia 57126 Abstract Abstract. In this research, the physics tools developed is the determinant of a refractive index of ATMega328 microcontroller based liquid with Ultrasonic Sensor. By utilizing the technology, the experiment becomes easier and simpler so that the experiment will not take a long time. This study aims to: (1) make the Design of Physics Learning Practical Tool determinant of a refractive index of liquid assisted by microcontroller based ultrasonic sensors ATMega328 (2) explain the working principle and experimental result of liquid refractive indexing instrument assisted with ATMega328 microcontroller based ultrasonic sensor. The working principle of the liquid refractive index determiner assisted by the microcontroller based ultrasonic sensor of ATMega328 is to determine the refractive index by measuring the positive lens focal distance (f1), the combined lens distance between the positive lens and the liquid (fcom) through the reflection of the shadow and radius Positive lens (R). This distance measurement uses ultrasonic sensors as a digital distance measuring device. Determining the refractive index of the liquid (n) by placing the liquid between the flat mirror and the convex lens. The clearest shadow distance captured by the screen is the combined focal distance between the positive lens and the liquid lens (fcom). After the positive lens focal distance (f1), and the combined lens (fcom), the focusing distance of the liquid lens (f2) can be determined. The focusing distance of the liquid (f2) and the fluid lens radius. Topic: Mathematics, Science, and Computer Science Education 267 Analysis of the Quality of Integrated Science Teaching Materials Based on Environmental Literacy with Pollution TopicsDesi Suryanti, P Sinaga, and W Surakusumah Universitas Pendidikan Indonesia Abstract Teaching materials is one factor that affects the teaching and learning activities. This study aims to analyze the quality of integrated science teaching materials on environmental pollution topics. This study includes Research and Development (R&D) method until the quality test of integrated science teaching materials development. Data collection was done through dissemination of validation form to material experts (3 persons) and teachers (10 persons). The result show the quality of teaching materialbased on material experts validation was good categorized with a percentage 75.6% and the teacher validation, as a user, was excellent categorized with a percentage of 90,5%. The conclusion of this study is integrated science teaching material based on environmental literacy can be implemented in teaching and learning process. Topic: Mathematics, Science, and Computer Science Education 268 How are the Problems of Pre-service Science Teachers on Newton’s Law Topics? : A Case StudyNanang Winarnno, Ari Widodo, Dadi Rusdiana, Diana Rochintaniawati, Ratih Mega Ayu Afifah Universitas Pendidikan Indonesia Abstract The aim of this study was to investigate the problems of pre-service science teachers on Newton’s Law topics. This is a descriptive research. Data was taken from the science education department at one of the universities in Indonesia. Samples were taken from 44 pre-service science teachers consisting of 40 female and 4 male. The findings of this study were pre-service science teachers still have difficulty in drawing free diagrams on Newton’s Law topics. Most pre-service science teachers can only explain Newton’s Law topics from a physics point of view. They still have difficulty integrating Newton’s Law topics with Biology concepts. The recommendation of this research is to develop an integrated science textbook related to Newton’s Law. Topic: Mathematics, Science, and Computer Science Education 269 Development of STEM Based e-module to Improve Junior High School Students’ Thinking SkillDiana Rochintaniawati, Rika Rafikah, Lilit Rusyati International Progrm on Science Education FPMIPA UPI Abstract The study aims to accommodate STEM – based learning by developing of e- module for science in Junior High school to improve students’ thinking. There are three questions posed in the study: 1) What are the stages of developing STEM Based e-module. 2) What are science contents included in the module, 3) How is aspect of STEM covered in the STEM based e-module? Research and Development employed in the study and the paper reported limited to the stage of development. The result of the study reveals that there are four stages of STEM-based e-module development: the curriculum analysis, the content analysis, STEM project analysis, and construction of story board. The content included in the e-module are: environmental sustainability, oxygen for life and earth quake. The STEM aspects are represented in a project embedded in the content of science. The project of soil quality detection construction was chosen for the project of environmental sustainability, photosynthesis project was chosen for the content of oxygen for life and earthquake resistance village was chosen for the content of earth quake. Topic: Mathematics, Science, and Computer Science Education 270 An Analysis of Students’ Mathematics Errors: A Study in Junior High School Students in KendariS Hidayat1,a), Suhendra1, Jupri A1, Kadir 2, M Ibrahim2 1 Graduate School of Education, Indonesia University of Education, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 2 Departemen of Mathematics Education, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Halu Oleo, Jl. H.E.A. Mokodompit, Kendari 93132, Indonesia Abstract Abstract. Problems in this research are: (1) what errors students make in solving problems of fractions? (2) what causes students’ errors in solving problems of fractions? (3) how much percentage of errors made by students in solving problems of fractions? Method used in this research is descriptive qualitative method. Sources of data in this study were obtained from observations, student test results and interview results. Research subjects were chosen based on results of a test analysis of 30 students. The results of the test analysis were used as the basis for selecting subjects for interview and 11 students were selected. Data analysis is done through reviewing all data, data reduction, data presentation in units, and data verification. Data of errors from each subject was obtained from a test. Students answers are analysed to get errors in solving the fractional problems. Guidelines used for error analysis is based on mathematical objects including errors in understanding the concepts and errors in performing the algorithm. Furthermore, the percentage of errors done by students in solving the problem of fractions is calculated. The conclusions obtained from the research are: errors that students make in solving the problem of fractions in terms of mathematical objects are errors of concepts and errors of algorithm. Topic: Mathematics, Science, and Computer Science Education 271 STEM BASED LEARNING TO FACILITATE STUDENTS’ CONCEPTUAL CHANGE, CREATIVITY AND COLLABORATION IN LIFE ORGANIZATION SYSTEM TOPICN Rustaman, E Afianti, S Maryati, & I Sembiring Science Education, Universitas Pendidikan Indonesia Abstract A study using one group pre-post-test experimental design on Life organization system topic was carried out to investigate student’s tendency in learning abstract concept, their creativity and collaboration in designing and producing cell models through STEM-based learning. A number of seventh grade students in Cianjur district was involved as research subjects (n=34). Data were collected using two tier tests for tracing changes in student conception before and after the application of STEM-based learning, and rubrics in creativity design (adopted from Torrance) and product on cell models (individually, in group), and rubric for self-assessment and observed skills on collaboration adapted from Marzano’s for life-long learning. Later the data obtained were analyzed qualitatively by interpreting the tendency of data presented in matrix sorted by gender. Research findings show that the percentage of students’ scientific concept mastery is moderate in general, their creativity in making cell model design varied in category (expressing, emergent, excellent, not yet evident). Student’s collaboration varied from excellent, fair, good, less once, to less category in designing cell model design. It was found that STEM based learning can facilitate students conceptual change, creativity and collaboration and there is a tendency that girls achieve better than boys in certain aspects. Topic: Mathematics, Science, and Computer Science Education 272 The Enhancement of Students Mathematical Self-Efficacy through Teaching with Metacognitive Scaffolding ApproachSufyani Prabawanto FPMIPA Universitas Pendidikan Indonesia Abstract This research aims to investigate the enhancement of students’ mathematical self-efficacy through teaching with metacognitive scaffolding approach. This research used a quasi-experimental design with pre-post respon control. The subjects were pre-service elementary school teachers in a state university in Bandung. In this study, there were two groups: experimental and control groups. The experimental group consists of 60 students who acquire teaching mathematics under metacognitive approach, while the control group consists of 58 students who acquire teaching mathematics under direct approach. Students were classified into three categories based on the mathematical prior ability, namely high, middle, and low. Data collection instruments consist of mathematical self-efficacy instruments. By using mean difference test, two conclusions of the research: (1) there is a significant difference in the enhancement of mathematical self-efficacy between the students who attended the course under metacognitive scaffolding approach and students who attended the course under direct approach, and (2) there is no significant interaction effect of teaching approaches and ability level based on the mathematical prior ability toward enhancement of students’ mathematical self-efficacy. Topic: Mathematics, Science, and Computer Science Education 273 Calcium Contains Tap Water Phenomena: Students Misconception Patterns of Acids-Bases ConceptS Liliasari1, A Albaiti2 and A Wahyudi1,3 1DepartemenPendidikan Kimia, UniversitasPendidikan Indonesia, Jl. Dr.SetiaBudhi No. 229, Bandung 40154, Indonesia 2Program Studi Pendidikan Kimia,UniversitasCenderawasih, KampusUncenWaenaJayapura 99351, Indonesia 3Program Studi Manajemen Rumah Sakit, Politeknik Piksi Ganesha, Jl. Jenderal Gatot Subroto 301, Bandung 40274, Indonesia Abstract Acids and bases concept is very important and fundamental concept in learning chemistry. It is one of the chemistry subjects considered as abstract and difficult to understand. The aim of this research was to explore students misconception pattern about acids and bases phenomena in daily life, such as calcium contains tap water phenomena. It was a qualitative research with descriptive methods. Participants were 546 students of chemistry education and chemistry undergraduate students, and chemistry education master program in West Java, Indonesia. The test to explore students misconception about this phenomena was essay test. There were five patterns of students misconception in explaining calcium carbonate precipitated phenomena of heating tap water. Students used irrelevant concepts in explaining this phenomena, i.e temporary hardness, coagulation, density, and phase concept. No students had right answer in explaining this phenomena. This research contributes in designing learning for meaningful learning and better understanding. Topic: Mathematics, Science, and Computer Science Education 274 Understanding and Responding the Students in Learning Mathematics through Differentiated InstructionTrusti Hapsari1,a), Darhim2, dan Jarnawi Afgani Dahlan3 1Universitas Swadaya Gunung Djati, Jl. Perjuangan No.1 Cirebon 1,2,3Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229 Bandung a)hapsaritrusti[at]gmail.com Abstract The study discusses the mathematics instruction types the students require, the differentiated instruction and its implementation, as well as the students responses to the differentiated instruction. This is a case study research which involves 62 students as the research respondents. The mathematics learning types required by the students and their responses to the differentiated instruction are examined through questionnaire and interview. The mathematics learning types in orderly required by the students, from the highest frequency cover the easily understood instructions, slowly/not rushing teaching, fun, not complicated, interspersed with humour, various question practices, not too serious, and conducive class atmosphere for the instructions. Implementing the differentiated instruction is not easy. The teacher should be able to constantly assess the students, s/he should have good knowledge of relevant materials and instructions, and properly prepare the instructions, although it is time-consuming. The differentiated instruction is implemented on the instructions of numerical pattern materials. The strategies implemented are flexible grouping, tiered assignment, and compacting. The students positively respond the differentiated learning instruction that they become more motivated and involved in the instruction. Topic: Mathematics, Science, and Computer Science Education 275 Learning Trajectory and Didactical Design of Trigonometric Concepts and Trigonometric Equations Formulated by Learning ObstaclesElah Nurlaelah and Dara Nur Istiqomah Departemen Pendidikan Matematika FPMIPA Universitas Pendidikan Indonesia SMA Negeri 4 Bandung Abstract Learning Trigonomtery concept sometimes cause difficulties in students, especially on the application of the concept in other concepts of mathematics or in the application in everyday life. What are the learning obstacles faced by students in learning the concept and how to overcome it ?. Based on a study of 36 high school students of class X, it was found that students got learning obstacle related to the existing concept image of trigonometric equations, learning obstacle related to the context of variation of available information, and Learning obstacle related to connection concept of trigonometric equation with other concept of mathematics. To overcome these difficulties before the teaching and learning will be conducted the teachers should arrange learning trajectory and didactical design for Trigonometry concept. Topic: Mathematics, Science, and Computer Science Education 276 Hypotetical Learning Trajectory to Anticipate Mathematics Anxiety In Learning The Concept of Algebra Based on The Perspective of The Theory of Didactical SituationRefi Elfira Yuliani, Didi Suryadi, Jarnawi Afgani Dahlan Universitas Pendidikan Indonesia Abstract Cockrof (Dzulfikar, 2016) mentions that students grow up without math loving at all. Extrinsic mathematics anxiety can be caused by a parent or teacher. Mathematical anxiety caused by teachers, according to Siroj (2003) can be caused by teachers themselves have mathematical anxiety resulting from inappropriate learning practices, such as improper teachers in managing learning, unstructured teaching materials that support the achievement of a competence and structure Unstructured learning. Suryadi (2013) states that the most important role of teachers in the context of didactic triangle is to create a didactical situation so that a learning situation occurs. This means that a teacher other than the need to master the teaching materials, also need to have other knowledge related to students and able to create a didactic situation that can encourage the learning process optimally (Suryadi, 2013). In other words, a teacher needs to have the ability to create a didactical relation between students and teaching materials so as to create a favorable didactic situation for students (Suryadi, 2013). Therefore, the purpose of this research is to create Hypotetical learning trajectory/HLT which can anticipate mathematics anxiety in learning algebra concept. The research method is design research using the perspective of theory of didactical situation. The subject of this study were 10 students of junior high school grade 8. The result of research is HLT which will be developed into design didactical Situation. Topic: Mathematics, Science, and Computer Science Education 277 DEVELOPMENT OF MULTIMEDIA INSTRUCTIONAL GAME MATHEMATICS IN SECONDARY SCHOOLHERU Universitas Muhammadiyah Palembang Abstract This has made a great contribution that the use of ICT in education. Utilization of ICT which is directly in contact with the medium of education is the development of computer-assisted learning (Computer Assisted Instruction). This research is the development of multimedia learning mathematics instructional games research in class VII Secondary School I Muhammadiyah Palembang. The purpose of this research is to; 1) produce an instructional multimedia math’s games class VII of the valid Secondary School; 2) produce multimedia instructional math games class VII Secondary School practically; 3) produce multimedia instructional math games class VII Secondary School which has a potential effect. Model development of instructional media in this study is modified from pustekom, using three stages, namely: design / planning, production and evaluation. Meanwhile, to conduct formative evaluation which refers to the evaluation of products includes self evaluation, prototyping (expert reviews and one to one and small group) and a field test (Tessmer, 1999). Based on the data obtained by the researcher concluded that the third prototype is being developed has a good level of practicality with the average value of the results of the analysis of student questionnaire was 83.33 (both categories) and the average value of the results of the analysis of observations is 85 (category well). Meanwhile, in terms of potential effects posed by interactive multimedia categorized very well with the results of the analysis of the average value of 92.29 and the student is otherwise completed for all The test results, the scores of all the students are more than a minimum completeness criteria (KKM’s score which is more than 60) Topic: Mathematics, Science, and Computer Science Education 278 Implementation of Problem Based Learning (PBL) to Improve High School Students’ Conceptual Understanding in MathematicsKarso (a), Eti Yulianti (b), Ibnu Hiban (a) a) Department of Mathematics Education Indonesia University of Education b) SMA Laboratorium UPI Abstract This conducted action research is based on preliminary studies from collaboration discussion between lecturer of Mathematics Education Study Program FPMIPA UPI with mathematics teacher at SMA Laboratorium UPI. From the discussion findings, it was revealed that in almost every school year, grade XII IPS students experience difficulties in mathematics course to achieve 75% of Minimum Course Completion Criteria (Kriteria Ketuntasan Minimum or KKM) that has been set by the school, that is 75. In other words, those students still have low level of conceptual understanding in mathematics, therefore an effort is necessary to fix the process as well as learning outcomes of mathematics course in that grade. Based on preliminary studies, we also found that usual learning model that is implemented in grade XII IPS SMA Laboratorium UPI is expository method, which is started from explanation of concepts, giving examples, question and answer, after that practicing exercises, and giving assignment or homework. On the other hand, learning models of mathematics in high school recommended by the 2013 Curriculum cover some innovative models. In this collaboration research of university lecturer, teacher, and college student, we try to develop a problem based mathematics learning model (PBL). From the results of this research, we conclude that mathematics learning in subject of matrices in grade XII IPS SMA Laboratorium UPI with PBL model can improve students’ conceptual understanding in mathematics, also, most of the students’ responses to mathematics learning with PBL model is positive or giving response in good category. Topic: Mathematics, Science, and Computer Science Education 279 Self-Perceived Assessment Skill of Prospective Physics TeachersRidwan Efendi1,a), Nuryani Y. Rustaman2,b), and Ida Kaniawati 1Departemen of Physic Education, Indonesia University of Education 2Science Education, Indonesia University of Education Abstract Assessment skills are an important component of assessment practice, without adequate assessment skills it is unlikely that teacher assessment practices will produce desired student learning outcomes. This study was conducted to reveal self-perceived assessment skills of prospective physics teachers by using quantitative descriptive analysis, and involving 82 prospective physics teachers who were experiencing teaching practice in junior high school and final project related to assessment. Data was collected by using Self-Perceived Assessment Skills Questionnaire consisted of 29 items related seven assessment competencies was developed and used in the study. Determination of assessment literacy detected from prospective physics teachers was carried out in descriptive statistics, in the form of respondent average values. Research findings show that self-perceived assessment skills of prospective physics teachers was categorized as close to contructivist. Topic: Mathematics, Science, and Computer Science Education 280 Analysis Of The Ability of Junior High School Students Performance in Science on STEM Project-Based LearningAndri Suryana, Parlindungan Sinaga,Irma Rahma Suwarma Universitas Pendidikan INdonesia Abstract The challenges of the 21st century demands the high competitiveness. The way of ability thinking, the determine how it work ability and choose instrument be part of the skills will need in the 21st century. The competence it can be supported by learning involving the student performance skills. Based on the preliminary studies at one junior high school in Bandung found that the learning involving of performance skill is low.This is supported by data from respondent in received the opportunity to make devise a sketch in of learning especially based on practices or projects, the results are 75 % students said rarely and 18,75 % students said never. In addition seen also how the student activities in project based learning in class the results stated that 68,75 % of students said less, and 6.25 % of students said never. Therefore, we did a result to uncover profile performance on the design process and the performance process of junior high school student performances to the matter optical by using STEM project based learning. From this result. From the research obtained the average score classes in the activities of the design process is as much as 2,49 or dipersentasikan become 62,41 % are in the good category and the average score classes in the process of the performance of activities receive is 3,13 or 78,28 % are in the good category Topic: Mathematics, Science, and Computer Science Education 281 Embedding Spiritual Value through Science LearningH Johan, A Suhandi, A R Wulan, W Widiasih, A Ruyani, S Sipriyadi Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Abstract The purpose of this study was to embed spiritual value through science learning program especially earth planet. Various phenomena in earth planet describe a divinity of super power. This study used quasi experimental method with one group pretest-posttest design. Convenience sampling was conducted in this study. 23 pre-service physics teacher was involved. Essay test was conducted to get data about reason ability. Pretest and posttest used a questionnaire had been conducted to collected data of spiritual attitude. Open ended question had been utilized at post-test to collected data. A fourth indicators of spiritual value related to divinity of God was used to embed spiritual value. The results show a shifted of students’ awareness to divinity of God. After learning earth planet, it known that students’ spiritual value was influenced by character of earth planet concept which unobservable and media visual which display each incredible phenomena process in our earth planet. It can be concluded that spiritual value can be embedded through unobservable phenomena of during learning earth planet process. Topic: Mathematics, Science, and Computer Science Education 282 Solutions of The Democratic Elections Model By Homotopy Analysis MethodBenny Yong Department of Mathematics, Parahyangan Catholic University, Jalan Ciumbuleuit 94, Bandung, Indonesia – 40141 Abstract This article presents the solutions of the democratic elections model by homotopy analysis method. We proposed a simple democratic elections model in a closed voters population. Voters population divided into three sub-population, i.e neutral sub-population, supportive sub-population, and aphatetic sub-population. The homotopy analysis method is applied to compute the solutions of the model. Homotopy analysis method is an analytic approximation method in the form of power series to solve the non-linear differential equation. Numerical simulations on the model in the form graphical results are presented and discussed quantitatively to describe the dynamics of each sub-population. Homotopy analysis method performs well in terms of efficiency which converge rapidly and results obtained require only a few iterations. Topic: Pure and Applied Mathematics 283 An Empirical Analysis of Demand for Housing Attributes in Semarang and Yogyakarta, IndonesiaSri Subanti (a*), Inaki Maulida Hakim (b), Akhmad Daerobi (c), Arif Rahman Hakim (d**), Usil Sis Sucahyo (e), and Susiyanti Susiyanti (f) a) Department of Statistics, Faculty of Mathematics and Natural Science, Universitas Sebelas Maret & Research Group for Applied Statistics, Universitas Sebelas Maret & Center of Research and Development for Tourism (PUSPARI), Universitas Sebelas Maret *sri_subanti[at]yahoo.co.id b) Department of Industrial Engineering, Faculty of Engineering, Universitas Indonesia c) Department of Economic Development, Faculty of Economics and Business, Universitas Sebelas Maret d) Faculty of Economics and Business, Universitas Indonesia & Institute for Research and Social Services, Universitas Sebelas Maret **arhaqkm[at]gmail.com e) Department of Accounting, Faculty of Economics and Business, Universitas Kristen Satya Wacana f) Department of Economic Development, Faculty of Economics, Business, and Humanities, Universitas Trilogi Abstract The paper aims to conduct an empirical estimation of the demand for housing attributes using data from household socio-economic survey in Semarang and Yogyakarta. The findings of this paper show that (1) the average rental expenditure for household in Semarang is higher than in Yogyakarta; (2) factors that affect the rental houses in both cities are senior high school education, university education, number of household member, number of internet cafes, signal tv, the number of junior high school, the number of university, distance to junior high school, and distance to the social health center; (3) other factors that affect the rental houses in Semarang are marital status, distance to primary school, and distance to hospital; and (4) other factors that affect the rental houses in Yogyakarta are age, elementary education, junior high school education, head of household who work in the primary sector, head of household who work in the tertiary sector, postal services, the number of hospitals, and the number of maternity hospital. Suggestions based on this paper, the local government need to improve basic public services such as education and health. Topic: Pure and Applied Mathematics 284 Determinant of Willingness to Pay and Economic Value in Sangiran Sites, Central Java Province, Indonesia : An Application of Contingent Valuation MethodSri Subanti (a*), Etik Zukhronah (b), Arif Rahman Hakim (c**), Sri Sulistijowati (d), and Inaki Maulida Hakim (e) (a) Department of Statistics, Faculty of Mathematics and Natural Science, Universitas Sebelas Maret & Research Group for Applied Statistics, Universitas Sebelas Maret & Institute for Research and Social Services, Universitas Sebelas Maret *sri_subanti[at]yahoo.co.id (b) Department of Statistics, Faculty of Mathematics and Natural Science, Universitas Sebelas Maret & Research Group for Applied Statistics, Universitas Sebelas Maret (c) Institute for Research and Social Services, Universitas Sebelas Maret **arhaqkm[at]gmail.com (d) Department of Statistics, Faculty of Mathematics and Natural Science, Universitas Sebelas Maret & Research Group for Applied Statistics, Universitas Sebelas Maret (e) Department of Industrial Engineering, Faculty of Engineering, Universitas Indonesia Abstract In this paper we want to determine the factors of willingness to pay for quality improvement and to estimates of economic value in Sangiran, Central Java Province, Indonesia. This paper used contingent valuation approach. The study involved Sangiran visitors, they were surveyed for their willingness to pay for historical, cultural, and educational function. Finding from this study, the significant factors affecting the individual’s willingness to pay are bid, gender, and income. The economic value of Sangiran sites was estimated between Rp 0.665 billion per year until Rp 2.409 billion per year. Recommendation from our study, we must support government for Sangiran improvement because it may be profitable from many perspective includes economic, historical, cultural, and education than from recreational one. Topic: Pure and Applied Mathematics 285 Stability Analysis Model of Plasmodium vivax from Anopheles in Human Infection Using SIDR Population Compartment with Treatment RTS-S/AS01 Vaccine in YogyakartaPrihantini Yogyakarta State University Abstract Plasmodium is a class of parasitic protozoa that multiplies in human blood cells and can cause malaria. Naturally, malaria transmission occurs through the bite of Anopheles female mosquito that has been infected by Plasmodium. One of the causes of malaria in humans is caused by Plasmodium vivax. There are four types of Plasmodium causes malaria in humans include Plasmoduim vivax with an incubation period of 8-14 days. The teenage infected by the female Anopheles mosquito bite infected with Plasmodium vivax is usually fever, anemia, chills and cold sauthorat. In Indonesia, as one of the developing countries that are in fact vulnerable and still at risk of malaria. From several cases of malaria in Indonesia, there have been various studies that construct a mathematical model for malaria. Therefore, in order to model the pattern of data that has the effect of dispersion varies, author use SIDR model population approach. Topic: Pure and Applied Mathematics 286 Completeness of the space of continous function as 2-normed space with respect to {sin x, cos x}Shelvi Ekariani (1), Moch. Idris (2) (1) Universitas Andalas (2) Universitas Lambung Mangkurat Abstract The purpose of this paper is to study completeness of the space of continous function as 2-normed space with respect to a linearly independent set, that is {sin x, cos x}. To show that the completeness, we shall first derive a norm from 2-norm and show that its equivalent to the usual norm on the space of continous function. Topic: Pure and Applied Mathematics 287 The Sufficient Conditions for Inclusion Properties of Weighted Discrete Lebesgue SpacesAl Azhary Masta, Encum Sumiaty, Muhammad Taqqiyubin, Irvan Pradipta Department of Mathematics Education, Universitas Pendidikan Indonesia Abstract In this paper, we define the weighted discrete Lebesgue spaces as generalized discrete Lebesgue spaces and have obtained some sufficient conditions for inclusion properties on those spaces. To get the result, we will compare some parameters on weighted discrete Lebesgue spaces. In addition, the weak type of the discrete Lebesgue spaces is discussed. Topic: Pure and Applied Mathematics 288 TELBS method on chocolate production data for the case of ourlierNovi Octavianti, Nurul Gusriani, Firdaniza Padjadjaran University Abstract Outliers in multiple linear regression analysis using Ordinary Least Squares Method (OLS) will give a poor model, so the interpretation of the given result is not valid. Another alternative method that can overcome the existence of outliers is robust regression method, one of robust estimation method is TELBS estimation method (TELBS). TELBS estimates the model parameters by minimizing the objective function. In this paper, TELBS will be applied to data of chocolate production and its effect factors with the help of special program built from Maple 15 software. The results show the value of the coefficient of determination is 0.809506 which means that as much as 80.95% of the variance of chocolate production which can be explained by the area of land and the amount of fertilizer. Topic: Pure and Applied Mathematics 289 Statistical Analysis To Calculate The Effect Of Academic Service Quality On Student Satisfaction In The Form Of Student Loyalty With Amos 22 (Case Study At Majalengka University)Tantry Wahyuni Majalengka University Abstract The purpose of this research is to analyze how the dimensions of academic service quality had a significant positive effect on student satisfaction which in turn provide significant positive impact on student loyalty. The role of media intervening: student satisfaction on student loyalty is expected to be confirmed. This research uses non-probability sampling method with purposive technique. The instrument of this research use questionnaire that analyzed by Structural Equation Modelling: Amos 22. From the analysis of the research, model tested shows that the model is fit and can be accepted based on the indices of the model with the RMSEA of 0,073. The results of this research indicate that the Five dimensions of Reliability, Assurance, Tangibles, Empathy and Responsiveness have a positive influence on the Quality of Academic Service. And there is a positive effect of Academic Service Quality on Student Satisfaction in the Form of student Loyalty. Topic: Pure and Applied Mathematics 290 Ethnomathematics: Exploration In Javanese CultureIrma Risdiyanti, Rully Charitas Indra Prahmana Universitas Ahmad Dahlan, Yogyakarta, Indonesia Abstract This research is the exploration study to indicate the correlation between math and culture. Nowadays, this people paradigm said that math didn’t correlate with culture. This model influences at learning practice of math in education, math is taught without showing how the correlation with culture in student daily life. This kind of thing causes math is complicated to be understood by students and causes the disturbance at children psychologist such as the anxiety or fright to the mathematics. This research is objected to explore Javanese culture, especially in Yogyakarta. The social focus that will be researched is the daily activities of society who becomes community culture of Javanese, such as day-to-day operations of the fisherman, farmer, seller, construction worker, batik creator and the activities in the traditional game of children. The purpose is to explore the use of math in the learning activity. The research method employed in this Ethnomathematics research adopting first mutual interrogation in the form of critical dialogue. The data collection technic of this study uses principles in ethnography such as observation, interview, documentation, and field note making with the original ethnography description chosen is about culture unsure such as the language used in the daily activity of Javanese people. This study recommends Indonesian individuals and educational institutions that we should view that mathematics is close with culture in the day-to-day life of society. Topic: Pure and Applied Mathematics 291 Cryptanalysis on Classical Cipher Base on Indonesian LanguageRini Marwati, Kartika Yulianti Department of Mathematics Education, FPMIPA UPI Abstract Cryptanalysis is a process of breaking a cipher in an illegal decrypt process. This paper discuss about encryption some classic cryptography, breaking substitution cipher and stream cipher, and how to increase its security. Encryption and ciphering based on Indonesian Language text. Microsoft Word and Microsoft Excel was chosen as ciphering and breaking tools. Topic: Pure and Applied Mathematics 292 Surfactant Effects on the Contact Line Alteration of a Liquid Drop in a Capillary TubeKartika Yulianti and Rini Marwati Department of Mathematics Education, Universitas Pendidikan Indonesia (UPI) Abstract In this paper, the effect of an insoluble surfactant on the moving contact line of an interface between two fluids filling a capillary tube is studied. The surfactant, believed dissolve or diffuse into the solid surface, causing a decrease in the surface tension between fluids and a solid surface. Here we propose that the decrease of fluids-solid surface tension satisfies the simplified non-linear Langmuir equation. That condition is applied to the unbalanced Young condition at the contact line. The Navier-Stokes equation for two-phase fluids, together with the convective equation for the surfactant at the interface is solved numerically. Results show that the surfactant has a significant effect on the motion of the contact line. Topic: Pure and Applied Mathematics 293 The Interplay between Group Crossed Products, Semigroup Crossed Products and Toeplitz AlgebrasIsnie Yusnitha Department of Mathematics Education, FPMIPA Universitas Pendidikan Indonesia Abstract Realization of group crossed products constructed by decomposition, as semigroup crossed products. And connected it to Toeplitz algebra of ordered group quotient to get some preliminaries description for the further study on the structure of Toeplitz algebras of ordered group which is finitely generated. Topic: Pure and Applied Mathematics 294 On The Conjugate μ-regular Complex Valued FunctionEndang Cahya, Sumanang Muhtar Gozali Department of Mathematics Education, FPMIPA Universitas Pendidikan Indonesia Abstract In this article we study the basic properties of conjugate μ-regular complex-valued function. In addition, we also give the sufficient condition and the way to build a μ-regular conjugate function. Topic: Pure and Applied Mathematics 295 The use of Dihexyldithiocarbamate in Reverse-phase HPLC of Metal ChelatesSoja Siti Fatimah1, Husein H. Bahti2*, Iwan Hastiawan2, and Anna Permanasari1 universitas pendidikan indonesia Padjadjaran University Abstract Dialkyldithiocarbamates have long been used as chelating agents in reverse-phase HPLC of transition metals. In the previous study, an alkyl homolog of this type of ligand, namely dihexyldithiocarbamate (DHDTC), was synthesized and characterized. The use of this particular ligand in the revese-phase HPLC some selected transition metal ions is now reported for the first time. The mobile phase comprising, of the flow rate, and of the detection, in the separation of the metal chelates of Cd(II), Fe(III), Cu(II), and Co(III), were investigated on a C-18 column. Results of the experiments showed dihexylditiocarbamate could be used for separating especially respectively for Cd(II), Fe(III), Cu(II), and Co(III). Therefore It could be used to simultance analysis Topic: Pure and Applied Mathematics 296 The Process of Scientific Thinking in Mathematics Learning: Geometry in Junior High SchoolIndra Ivanti Siregar, Budiyono, Isnandar Slamet Department of Mathematics Education, Faculty of Education and Teacher Training Sebelas Maret University Jl. Ir Sutami 36A Surakarta, Central Java, Indonesia Abstract The process of scientific thinking is a mechanism for acquiring knowledge based on logical structure. This article aims to describe the process of scientific thinking in the learning of geometry in focusing on students in junior high school. This article uses descriptive analysis research method. The process of scientific thinking integrated in accordance with the characteristics of mathematical learning, it can help to deal with the difficulty in drawing objects due to lack of understanding of space and form, or the limited knowledge of geometry related to real objects. The implication is that students can solve problems related to geometry in real life. Topic: Pure and Applied Mathematics 297 Identification of Five Time Periods on the Indonesian Stock Exchange Index Historical Data Since 1997 to 2016Nowo Riveli, Bambang Joko Suroto Dept. of Physics, University of Padjadjaran, Indonesia Abstract We are investigating the behavioral changes of the Indonesian financial systems in the last 20 years. Changes in the financial system behavior were indicated by differences in the statistical properties of the daily log return distribution in two adjacent time windows. To measure how likely two distributions are differ, the Kolmogorov-Smirnov (KS) Test was applied. We have found that we can divide our time series data into five segments, where the KS probability values between two adjacent segments are maximum. This finding can be used to study the effect on the financial system imposed by, for example, the socio-economy and political policy by the government, by studying the changes in such factors in the identified time periods. Topic: Pure and Applied Mathematics 298 Synthesis of Solid Catalyst from Egg Shell Waste and Clay for Biodiesel SynthesisSoni Setiadji (a*), Citra Deliana Dewi Sundari (b), Syafaatul Fitriyah (a) (a) Chemistry Department, UIN Sunan Gunung Djati Bandung Jl. A H Nasution 105, Cibiru Bandung 40614 *s.setiadji[at]gmail.com (b) Department of Chemistry Education, UIN Sunan Gunung Djati Bandung Abstract Until now, energy consumption in Indonesia is almost entirely fulfilled by fossil fuels, thus, its availability will be limited and continue to decrease. To overcome these problems, development and utilization of renewable energy are required. one of which is biodiesel. Biodiesel can be prepared through transesterification reaction of vegetable oil using catalyst. In this research, a new solid catalyst for biodiesel synthesis was successfully prepared from chicken egg shell waste and clay. Optimization of the transesterification reaction of coconut (Cocos nucifera) oil to obtain biodiesel was also carried out. The formation of CaO/kaolin catalyst was confirmed based on the results of XRD and SEM-EDS. This catalyst is suitable for biodiesel synthesis from vegetable oils with lower FFA (free fatty acid) levels, i.e. coconut oil with FFA level of 0.18%. Based on FTIR result, FFA level test, and flame test, it was found that biodiesel was successfully formed. Synthesis of biodiesel has the optimum conditions on reaction time of 16 hours and a temperature of 64 °C with oil : methanol ratio of 1: 15 and : CaO/kaolin catalyst concentration of 0.9% in a reflux system. Topic: Science and Technology 299 SYNTHESIS OF ACTIVE CARBON FIBER FROM PYROLYZED COTTON FOR ADSORPTION OF FUME POLLUTANTS APPLICATIONAde Yeti Nuryantini1,3,*, Fitri Rahayu1,2, Bebeh Wahid Nuryadin1,2,** UIN Sunan Gunung Djati Bandung Abstract Research on the synthesis and application of active carbon fibers from pyrolyzed cotton to adsorp fume pollutants has been done. The active carbon fibers from cotton were synthesized using an oven with simple heating method at low carbonization temperature. The cotton was successfully turned into carbon within four hours at carbonization temperature of 250oC. The activation process, which used KOH and NaOH, did affect the functional groups, morphology, diameter, and porosity of the active carbon fiber. From the analysis of FTIR spectrum, it was shown that there were some new peaks at the absorption area of C-O, O-C=O and C-O-C after the passing of fume. Before being activated by NaOH, the carbon fibers had average diameter size of 6.80 μm and average pore size of 179.33. After the activation process using NaOH, the carbon fibers had average diameter size of 10.17 μm and average pore size of 390.32 nm. Topic: Science and Technology 300 MECHANISM OF DISCIPLINE OF CASE STUDY INDISCIPLINE OF PARTICIPANTS IN SMA YPC WEST JAKARTADewi Soleha University of Indonesia Abstract In this paper discusses the indiscipline, indiscipline becomes an important study today because of the increasingly rampant student problems. Juvenile delinquency, moral decline among learners, erodes values and norms among learners, self-defeating personalities, cultures of dishonesty, lack of compensation, indifference reflected in the undisciplined nature of learners in the school. Foucault in his paper Disipline and Punish, Foucault mentions there are several mechanisms that are formulated in the discipline: first, the art of spreading. Second, activity control. Third, the strategy of adding the use of time and the fourth, the last is the composed power. The indiscipline mechanism that exists in YPC High School. The school itself is an educational institution that continues to be developed, updated, undergoing policy changes with the aim of being part of efforts to achieve improvements to improve the quality of education in order to shape the character of the expected future generations. In this paper see the important role of schools in shaping the character of learners. Topic: Science and Technology 301 Vertical and Horizontal Trajectory Tracing of Aerosol in BandungAmalia Nurlatifah Environmental Engineering, Faculty Of Civil and Environmental Engineering, Institut Teknologi Bandung Pusat Sains dan Teknologi Atmosfer, LAPAN Abstract The haze event have occurred in Bandung in last 25 years. Sometimes this event happened because of forest fire. One of the worst haze event occured in October 2015. Aerosol is one of the haze composition which can do long-range transport and may cause respiratory problems. So there is a research for tracing aerosol trajectory in Bandung during the haze event in 23-28 October 2015 using HYSPLIT-4 Back Trajectory Model with data input from GDAS 0.5ox0.5o. Analysis the effect of forest fires to aerosol concentration is associated with AOD. AOD data which used here is from TERRA MODIS and have spatial resolution 10 km. The model output was analyzed together with rainfall data from GSMaP, NCEP/NCAR meteorology data, and SRTM CGIAR-CSI topography data to obtain more accurate analysis in aerosol trajectory tracing in Bandung using HYSPLIT-4 Back Trajectory Model. In 23-28 October 2015, AOD value was high and have big value. This is an indication that aerosol concentration in Bandung was high. Trajectory plot from HYSPLIT shows that aerosol in Bandung is from Southeast of Bandung. This happened because in August temperature in Southern Hemisphere is colder than equator so the pressure in equator is lower than Southern Hemisphere and this event lead the wind blow from Southern Hemisphere to the equator. Plot trajectory from HYSPLIT-4 indicate there is long trajectory so this is lead to some assumption that there is lack of vertical transportation and lack of wet deposition process in this trajectory. Rainfall plot from GSMaP shows that in this event there is lack of rainfall in Bandung so the aerosol move very fast and very far from its source. Topic: Science and Technology 302 Analysis The Impact Of Climate Change Into Water Resorces In Ayung Watershed, BaliSinta Berliana Sipayung1, Amalia Nurlatifah1,2, Bambang Siswanto1 1Centre of Atmospheric Science and Technology, Indonesia National Institute of Aeronautics and Space, Indonesia 2Environmental Engineering, Faculty Of Civil and Environmental Engineering, Institut Teknologi Bandung, Indonesia Abstract Global warming can cause climate change. This topic is one of the warmest conversations of late. Therefore, in this research, we can see how the temperature condition in Ayung Watershed so it can be determined how the effect on the rainfall in Ayung Watershed. A projection of CCAM data is used to project the effects of climate change on rainfall conditions in the Ayung watershed in the future. This data is then validated by the CRU (Climate Research Unit) data. In Bali it appears that in the last 100 years according to CRU data there is an increase in annual temperature trends from 1901-2014. As a result of this, the frequency of extreme weather events in the Ayung watershed has increased over the past 30 years. Rainfall above 500 mm occurred about 11 times in the period 1991-2014. The frequency is much higher than that of 1931-1960 or 1961-1990 which is only about 9 times and in 1901-1930 only 5 times. According to TRMM data and CCAM data, Tukad Ayung which is the main river in the Ayung Watershed has a monsoonal rainfall pattern where the lowest rainfall is in June-August and the maximum rainfall is in December-February. Assuming changes in land use and fixed topography patterns, according to the linear regression analysis of the debit prediction data based on the rainfall data input from the CCAM model itself, the monthly debits and water balance in Tukad Ayung are predicted to remain until 2069 despite occurred climate change. Topic: Science and Technology 303 ACTIVITIY OF MILK KEFIR WHEY AS NEUTRALIZING DRINK ORGANOSULPHUR POLYSULFIDE CYCLIC COMPOUNDS ODOR-CAUSING IN PETAI (PARKIA SPECIOSA HASSK.)Tuti Kurniati, Neneng Windayani, Milla Listiawati Universitas Islam Negeri Sunan Gunung Djati Bandung Abstract This study aims to assess the activity of milk kefir whey in neutralizing odor-causing cyclic polysulfide compounds in petai (Parkia speciosa Hassk.). RAL design used to determine the optimum fermentation conditions. The data obtained were processed using SPSS 20. Results showed the characteristics of the microbes in the kefir grains include lactic acid bacteria consisting of genus Lactobacillus and yeast of the genus Candida and Saccharomyces. The optimum fermentation conditions using cows milk kefir grain starter obtained in the fermentation time of 24 hours at a concentration of 5% kefir grain. Whey kefir which is produced have high levels of fat, protein, carbohydrates, fiber and lactic acid respectively 1.81; 4.35; 5.59; 0.26 and 0.16%, pH 4.4; a density of 1.0628 g / mL and 7.9368 cP viscosity. Milk kefir whey actively reduce the level of petai smell significantly different at the level of α = 0.05. Topic: Science and Technology 304 Geolectric imaging for saline water intrusion in Geopark zone of Ciletuh Bay, IndonesiaNanang Dwi Ardi, Mimin Iryanti, Cahyo Puji Asmoro, Ahmad Yusuf , Anggia Nur Abiyyah Sundana, Hani Yusrina Safura, Mardiannisa Fitri, Meliza Anggraeni, Rizky Kurniawan, Rossy Afrianti, Sumarni Physics Program, Universitas Pendidikan Indonesia Abstract Saline water intrusion in estuary is an urgent ecological encounter across the world. The Ciletuh Bay, located in the southern Sukabumi district, is an area with high cultivated potential becoming one of the most important geology tourism zones in Indonesia. However, salt water intrusion along the creek is a natural spectacle that disturbs the economic growth of the whole region. This research was intended at plotting the subsurface level of saltwater interventions into aquifers at the northern part of Ciletuh creek, Indonesia. The study implemented geoelectric imaging methods. 37 imaging datum were acquired using Wenner array configuration. The saline water were identified across the study area. The result of two dimensional cross-sectional resistivity shows that there is an indication of sea content in our measured soil, i.e. the smallest resistivity value is 0.579 Ωm found at a depth of 12.4 m to 19.8 m at a track length of 35 m to 60 m is categorized in the clayey which shows low groundwater quality. However, when compared with the results of direct observation of groundwater from the wells of residents, the water obtained is brackish water. A water chemistry test is conducted to ascertain the initial results of this method so that a potential sea intrusion potential map can be interpreted more clearly. This can consequently help as a extrapolative model to define depth to saline water at any site within the saline water zone in the study area. Topic: Science and Technology 305 Biomonitoring study of water catchment area of Cilaja in Ujung Berung, Bandung within year 2014-2017Hertien Koosbandiah Surtikanti Departemen Pendidikan Biologi, FPMIPA UPI Abstract Abstract. Water catchment area of Cilaja is located along Giri Mekar and Sindanglaya village, Ujung Berung, Bandung. This river has high values for the people living in that area, to support clean water supply, coffee plantation, agriculture area and fish farming area. Field study is done to monitor water quality due to high variation of human activities. Three location sites (coffe/pinus plantation, agriculture and residential area) were selected. Chemical-physical water were measured and analysed. Bioindicator of macrobenthos were collected as well. This study is done between 2014-2017. Based on the distribution and composition of macrobenthos: Ephemeroptera, Plecoptera and Trichoptera indicating for clean water, were still found in the three differrent land uses. It showed that good water quality was detected within 4 years. It was supported with the people attitudes in conserving water quality for long period of time. Topic: Science and Technology 306 Fuzzy Usage Pattern in Customizing Public Transport Fleet and its Maintenance OptionsHennie Husniah, Leni Herdiani, Kusmaya, Asep K. Supriatna Department of Industrial Engineering Langlangbuana University Abstract In this paper we study a two-dimensional maintenance contract for a fleet of public transport, such as buses, shuttle etc. The buses are sold with a two-dimensional warranty. The warranty and the maintenance contract are characterized by two parameters – age and usage – which define a two-dimensional region. However, we use one dimensional approach to model these age and usage of the buses. The under-laying maintenance service contracts is the one which offers policy limit cost to protect a service provider (an agent) from over claim and to pursue the owner to do maintenance under specified cost in house. This in turn gives benefit for both the owner of the buses and the agent of service contract. The decision problem for an agent is to determine the optimal price for each option offered, and for the owner is to select the best contract option. We use a Nash game theory formulation in order to obtain a win-win solution – i.e. the optimal price for the agent and the optimal option for the owner. We further assume that there will be three different usage pattern of the buses, i.e. low, medium, and high pattern of the usage rate. In many situations it is often we face a blur boundary between the adjacent patterns. In this paper we look for the optimal price for the agent and the optimal option for the owner, which minimizes the expected total cost while considering the fuzziness of the usage rate pattern. Topic: Science and Technology 307 Identification Normal External and Internal Bacteria and Fungi in Larvae and Pupae Papilio polyetesYayan Sanjaya, Suhara and Mimin Nurjhani Universitas Pendidikan Indonesia Abstract Interaction between insects and microorganism has been occuring thousands years ago. The numerous ones is bacteria that live inside insect, but there are possibiity also to finds other micoorganismes like fungus.It can be become agood atmosphere It is laso indicate healthy of an insect. If there were existing foreign microbiota, it can be concluded that the inset was sich. The Methods of this reseach is examine bacteria external and internal with Nutrient Aggar (NA) as Media under following the method of Caoili (2003) with inverstigating external, fore gut, mid gut and hind gut. The result showed that weather in larvae 5th of Papilio polyetes and its pupae on external examine. The appearance of bacteria gram + were more numerous than gram – one. While in the fore gut, mid gut and fore gut were domonated by bacteria gram + its correlated with the fact that its alkaline. Their presence infulence by habitat, morphologi and feeding habits Topic: Science and Technology 308 Isolation and Identification of Cellulolytic Bacteria from Termites Gut (Cryptotermes sp.)Peristiwati, Yayan Sanjaya Natamihardja, Hanifah Herlini Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia Abstract the energy and environmental crises developed due to huge amount of cellulosic materials are disposed as “waste.” Cellulose is the most abundant biopolymer on Earth. The hydrolysis of cellulose to glucose and soluble sugars has thus become a subject of intense research. Termites are one of the most important soil insects that efficiently decompose lignocelluloses with the aid of their associated microbial symbionts to simpler form of sugars. The steps of this study consisted of cellulose isolation, cellulolytic bacteria isolation and identification. Cellulose degrading bacteria from termite (Cryptotermes sp.) gut flora were isolated, screened and their identification was studied which showed halo zones due to CMC agar. Among 12 isolates of bacteria, six isolates were cellulolytics. MLC-A isolate had shown maximum in cellulolytic index (1.32). Each isolate was identified based on standard physical and biochemical tests. Three isolates were identified in the genus of Clostridium, one isolate be placed in the group of Mycobacteriaceae, Lactobacillaceae or Coryneform and the last one in the genus Proteus. Topic: Science and Technology 309 THE ROLE OF RED DRAGON FRUIT PEEL (Hylocereus polyrhizus) TO REPAIRMENT BLOOD LIPID LEVELS OF HYPERLIPIDEMIA MALE MICEHernawati (a*), Nina Anggraena Setiawan (b),Rita Shintawati (b), Didik Priyandoko(b) Department of Biology Education, Universitas Pendidikan Indonesia Bandung 40154, Indonesia Abstract Red dragon fruit peel has a high potential to maintain health. The food component in the dragon fruit peel has the potential of hypocholesterolemic effects. The purpose of this research was to know the role of red dragon fruit peel powder to total cholesterol, triglyceride, high density lipoprotein (HDL), low density lipoprotein (LDL), and weight in the male hyperlipidemic Balb-C mice (Mus musculus). This study used a completely randomized design (CRD) and four replicates for each dose treatments. Samples were 24 male mice that divided into six groups i.e. positive and negative controls, doses of 50; 100; 150 and 200 mg/kgWB/days red dragon fruit peel powder. Before being given treatment, mice were given feed containing high fat for 20 days until experiencing conditions hyperlipidemia. The red dragon fruit peel powder was given at oral with used gavage for 30 days. Blood samples red were taken from the tail on vena caudalis in three stages after acclimation, high-fat feed induction and treatment. Blood lipid samples were analysed at enzymatic with using BIOLABO kits with Cholesterol Oxidase Para-aminophenezone (CHOD-PAP), Glycerol Phosphate Oxidase Para-aminophenazone (GPO-PAP) methode, and Friedwald. The results of this study indicate that after administration of red dragon fruit peel powder total cholesterol levels, triglycerides and LDL-C decreased, along with increasing doses of red dragon fruit peel powder for 30 days. The results of this study also showed that dragon fruit powder can increase HDL-C levels. The conclusion of this research was red dragon fruit peel powder can improve blood lipid level of male Balb-C mice hyperlipidemia. Topic: Science and Technology 310 Application Artificial Neural Network for Green Consumer BehaviorY Deliana*, I- A Rum** *Department of Agribusiness, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor 45363, Indonesia ** Department of Economics, Faculty of Economics and Business, Universitas Padjadjaran, Jatinangor 45363, Indonesia Correspondent e-mail : y.deliana[at]gmail.com Abstract A machine learning approach based on the artificial neural network (ANN) is applied for the pattern recognition problem in social sciences. The proposed method provides a direct mapping from configuration green environment to consumer behavior. The algorithm used in training is Scaled Conjugate Gradient (SCG) with random data division and the performance is calculated using MSE. The benchmark conducted for the training phase of consumer behavior showed that only medium and high level of behavior that can well be recognized, indicate that environment have affirmative impact on green behavior. The correct classification on training can reach to 82%, with MSE=0.07 at epoch 11. It is shown that ANN can also capture the effect of attitude-behavior gap when properly trained, resulting in 71.6% correct for high level compared to 9.8% correct for medium level behavior (about 15.3% incorrect classification). The result of the study show that green environment affects to med-high level of green behavior. Topic: Science and Technology 311 Antioxidant and Antihemolysis Activity of Red Ginger Rhizome Extract (Zingiber officinale var. Rubrum)Didik Priyandoko1, Ratih Ajeng1, Hernawati1 Universitas Pendidikan Indonesia Abstract Red ginger as known as spicies herb and medicinal plant. In medicine sector, red ginger contains antioxidant compounds which is one is phenol. Phenol compounds in red ginger rhizome has the potential to prevents hemolysis and inhibits reactive oxygen species. This research were aimed to analyze antioxidant activity value and antihemolysis of red ginger rhizome extract. Completely Randomized Design were used with 5 treatments and 4 replications. In this study, extract of red ginger rhizome varians concentration is 80, 100, 120, 140 and 160 ppm. First experiments process were extraction use maceration method and ethanol 70% as a solvent. Total phenol content of red ginger rhizome extract were determined using folin ciocalteu method. Activity antioxidants were determined using 1-1 Diphenylpicylhydrizyl radical (DPPH) and parameters using IC50 (Inhibiton Concentration) value. Antihemolysis test using red blood cells were previously given stress peroxidative and then given by extract of red ginger rhizome with ratio 1:1. Absorbance value of red ginger rhizome extract were measure using spectrofotometer UV-Vis. The results of total phenol content of red ginger rhizome extract were 160 mg/100gr mass of sample and the antioxidant activity using DPPH method showed the IC50 of 68,4 ppm and classified into active/strong antioxidant. Meanwhile, antihemolysis test showed extract of red ginger rhizome can prevented hemolysis of 81% and there is a correlation between phenol & antioxidant and phenol & antihemolysis. Topic: Science and Technology 312 Development of Gravity Theory Application in the Internal-Regional Interzone Commodity Movement Distribution with the Origin Zone Movement Generation BoundaryJuang Akbardin, Danang Parikesit, Bambang Riyanto, Agus Taufik Mulyono Department of Civil Engineering, Universitas Pendidikan Indonesia – Bandung, Indonesia Department of Civil Engineering, Universitas Gajah Mada – Yogyakarta, Indonesia Department of Civil Engineering, Universitas Diponegoro – Semarang, Indonesia Abstract Zones that produce land fishery commodity and its yields have characteristics that is limited in the limited distribution capability in consequence of limited infrastructure conditions availability. High demand for fishery commodities caused to a growing distribution at inefficient distribution distance. The development of the gravity theory with the limitation of movement generation from the production zone can increase the interaction interzones by distribution distances effectively and efficiently with shorter movement distribution distances. Regression analysis method with multiple variable of transportation infrastructure condition based on service level and quantitative capacity is determined to estimate the mass of movement generation that is formed. The resulting distribution model has the equation Tid = 27.04 -0.49 tid. Based on barrier function of power model with calibration value β = 0.0496. In the way of development of the movement generation mass boundary at production zone will shorten the distribution distance effectively with shorter distribution distances. Shorter distribution distances will increase the accessibility interzones to interact according to the magnitude of the movement generation mass. Topic: Science and Technology 313 Mediated Electrochemical Oxidation (MEO) Process: a study on Nonylphenol Ethoxylates (NPE) oxidation in Batch Mode using Cerium (IV) OxidantHenry Setiyanto, I Made Adyatmika, Mhd Muslim Syaifullah, Muhammad Ali Zulfikar, Buchari Analytical Chemistry Research Group, Institut Teknologi Bandung, Bandung, Indonesia. Abstract Nonylphenol ethoxylate (NPE-10) is one type of non-ionic surfactants from the class of alkylphenol ethoxylate (APE). This compound is already tightened their use in European Union countries. However, these surfactants are still used widely in Indonesia because the price is relatively cheap. Consequently, these compounds can accumulate in aquatic environments. NPE-10 can disrupt aquatic ecosystems. This study aimed to describe the electrooxidation process of NPE-10 based on the parameters of a potential difference, concentration of NPE-10, concentration of Ce (III) and oxidation time. The result of oxidation NPE-10 was measured by the amount of current generated from voltammetry technique. Studies of cyclic voltammetry using carbon paste electrodes illustrates the potential value of the oxidation of Ce (III) / Ce (IV) of 1.25 V and the reduction potential value of Ce (IV) / Ce (III) of 1.192 V. NPE-10 are electroactive irreversible because it only provides the potential value of oxidation at 1.44 V. Percent of total degradation of 84.96% was obtained at elektrooxidation of 500 ppm NPE-10 by the addition of 0.015 M Ce (III) for 90 minutes at 0.2 M H2SO4 and the use of potential of 6 V. Topic: Science and Technology 314 Removal of humic acid from aqueous solution using dual PMMA/PVDF composite nanofiber: Kinetics studyM A Zulfikar, I Afrianingsih, A Bahri, M Nasir, A Alni and H Setiyanto Analytical Chemistry Research Group, Institut Teknologi Bandung Abstract The removal of humic acid from aqueous solution using dual poly(methyl methacrylate)/polyvinyl difluoride composite nanofiber under the influence of concentration has been studied. The experiments were performed using humic acid (HA) as an adsorbate at concentration in the range of 50-200 mg/L. Pseudo-first-order, pseudo-second-order, and intra-particle diffusion models were used to describe the kinetic data and the rate constants were evaluated. It was observed that the amount of humic acid removed decrease with increasing concentration. The kinetic study revealed that pseudo-second order model fitted well the kinetic data, while the external diffusion or boundary layer diffusion was the main rate determining step in the removal process. Topic: Science and Technology 315 Nutrition Formulation of Microbial Biostimulation for MEOR Application Using Surface Response Methodology (Central Composite Design Model)Isty Adhitya Purwasena, Dea Indriani Astuti, Rara Ajeng Annisa Wulandari, Rika Handaruni Department of Microbiology, School of Life Sciences and Technology-Bandung Institute of Technology Abstract The increment of oil consumption in Indonesia is not supported by the oil production which has been declined since 2002. Microbial Enhanced Oil Recovery (MEOR) is one of the technology for increasing the oil production by employing microorganism. The aim of this research is to determine the optimum nutrients concentration which stimulating the growth of indigenous microorganisms of oil reservoir in South Sumatera. The experiments were performed using a surface response with central composite design (CCD) by using molasses, (NH4)2HPO4, and urea as independent variables. The response parameters are consisted of the number of anaerobic and facultative anaerobic bacteria, pH, viscosity, and IFT. The experiments were carried out using 200 ml vial bottles at 50oC under anaerobic conditions for six weeks. The highest anaerobic and facultative anaerobic cell number were 1,85x106 CFU/ml and 1,52x106 CFU/ml and the highest reduction of IFT and viscosity were 57,09% and 92,02% respectively after six weeks incubation. GC-MS analysis of oil sample showed the presence of cyclic chain hydrocarbon fractions degradation into straight chain hydrocarbon fractions. Based on statistical analysis of CCD, the optimum nutrients concentration which are could be applied for MEOR applications are molasses 7,16% (v/v), (NH4)2HPO4 1% (w/v) and urea 1% (w/v). Topic: Science and Technology 316 Effect of Germanium Concentration Variation on Tunnelling Current Calculation of Si/Si1-xGex/Si Heterojunction Bipolar TransistorLilik Hasanah, Endi Suhendi and Khairurrijal1) Departemen Pendidikan Fisika FPMIPA Universitas Pendidikan Indonesia Abstract Tunelling current calculation on Si/Si1-xGex/Si heterojunction bipolar transistor is done by including the coupling between transversal and longitudinal components of electron motion. The calculation result shows that the coupling between kinetic energy in parallel and perpendicular to Si1-xGex barrier surface affect tunneling current significantly when electron velocity is faster than 1x105 m/s. This analytical tunneling current model is then used to study how the germanium concentration in base to Si/Si1-xGex/Si heterojunction bipolar transistor influence the tunneling current. It is obtained that tunneling current will increase as the germanium concentration given in base decrease. Topic: Science and Technology 317 Effect of (Monomer - Crosslinker – Initiator) Composition at Polymer Synthesis for Retention Catechin and Its DerivativesUntung Triadhi, Muhammad Ali Zulfikar, Henry Setiyanto, Muhammad Bachri Amran Analytical Chemistry Research Group, Institut Teknologi Bandung, Bandung, Indonesia. Abstract Tea is vegetation that contain with high polyphenol. MISPE (molecularly imprinted Solid Phase Extraction) is separation technique using a solid adsorbent as principles of MI (molecularly imprinted). Methacrylic acid (MAA) was used as a monomer, ethylene glycol dimethacrylate (EGDMA) as crosslinker, benzoyl peroxide (BPO) as initiator and acetonitrile (ACN) as porogen. Catechin will use as template. Thermal and microwave method was used as synthesis method. There is no significant difference between the result of NIP (non-imprinted polymer) synthesized by using thermal or microwave methods by MAA: EGDMA: BPO 5 mmole : 30 mmole : 0,5 mmole ratio. Microwave method required less time than thermal method. Microwave just takes 4 minutes at 60-65 oC while thermal takes 60 minutes at the same temperature. The ratio number of moles of the monomer, cross linker, and initiator are also performed. When the composition of moles monomers and initiator are equal, the increase of moles cross linker will give hard and rigid product. But when composition of monomer and crosslinker are equal, the increase of mole initiator will give a more fragile product. The result of FTIR spectrum of NIP between thermal and microwave methods didnot give a significant differences. FTIR spectrum of NIP gave a new absorption peak which indicates a new bond formation. To recognize the adsorption ability, NIP is contacted with catechin solution. Topic: Science and Technology 318 Bioaccumulation of Copper (Cu) and Chromium (Cr) on Export Comodity Vanamei Shrimp from Karawang, West JavaNoverita Dian Takarina1, Andi Rahman1, Titin Siswantining2 1Marine Science Postgraduate Program, Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, West Java, Indonesia 2Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, West Java, Indonesia Abstract Karawang is one of regencies in West Java which has great potential in vannamei culture. The farm here was modern farm and using Citarum Rivers as water source. Human activities like house hold and industry around the river cause quality decrease on water and negative impact to shrimp farm. This research was aimed to investigate the bioaccumulation of copper (Cu) and chromium (Cr) on vannamei shrimp from Karawang, West Java. Amount of shrimp’s meat and carapace were used for heavy metal measurement using atomic absorption specthrophotometry. Result showed that content of copper both in meat and carapace were higher than content of chromium. Moreover, the content of both metals were higher on carapce compared to meat. Since the content in meat were below treshold, so it is safe for consumption. Since there is no significant different content of both metals in carapace, the utilization for industry will perform similar risk Topic: Science and Technology 319 INFLUENCE OF SWEET POTATO TYPES ON PHYSICAL AND SENSORY CHARACTERISTICS OF SWEETPOTATO CREAM SOUP (Ipomoea batatas L)Tati Setiawati, Sudewi, Ai Mahmudatussa’adah* Study Program of Culinary Education Universitas Pendidikan Indonesia Abstract Pure Cream Soup is a cream soup by using pure tubers as thickening ingredients. Pure cream soup is a famous potato cream soup. Potatoes are relatively more expensive than sweet potatoes. The chemical content of sweet potatoes is relatively the same as the potatoes. Thus it is very effective to develop sweet potato cream soup (SCS). In making Sweet potato cream soup many alternative processing techniques are used. The method used is development method with Quantitative Descriptive Analysis sensory test by trained panelist. Trained panelists are generated through the screening stage, basic taste test, intensity test, and interview. Of the 44 people who followed the screening were netted eight trained panelists, 1 male panelist and 7 female panelists with a 21-24 year age range. Five types of sweet potato used purple sweet potato, Cilembu sweet potato, japanese sweet potato, yellow sweet potato, and white sweet potato. The most preferred SCS color is Japanese Sweet Potato, and the most viscous texture is Cilembu sweet potato. The most preferred SCS overall is SCS japanese sweet potato. Topic: Science and Technology 320 PURPLE SWEET POTATO ICE CREAM YOGHURT AS DIVERSIFIED OF SWEET POTATO (Ipomoea batatas L) PROCESSINGElly Lasmanawati Wiraatmadja, Yulia Rahmawati, Ai Mahmudatussa’adah Universitas Pendidikan Indonesia, Bandung, Indonesia Abstract Yoghurt and Ice Cream is one of the products that many people love. The main component of yogurt and ice cream is milk. Yogurt and ice cream are generally added artificial coloring to make it more interesting. Artificial dyes do not have good functional properties for the health of the body. One source of food that has a natural dye and acts as an antioxidant is purple sweet potato. Purple sweet potato production is very abundant, but its utilization is not maximal yet. The purpose of this research is to develop yoghurt and ice cream products based on purple sweet potato. The method used in this study is an experimental method with complete randomized design. Stages in this study are screening recipe, analysis recipe, preparing prescriptions, prescription trials and product testing by trained panelists. The data obtained were analyzed using ANOVA, and if there were differences then tested the significance of the difference by using Duncan Test. The results showed the number of starter 5 grams for 1 Liter fresh milk, 24-hour incubation time at 27 ° C produces yoghurt with pH 4.3 and most preferably panelist. Characteristics of yogurt produced soft, not too sour, smells typical yoghurt. Yoghurt can be made into ice cream with the addition of emulsifiers, stabilizers, and mixed with medium-speed for 10 minutes, then frozen. Yoghurt and ice cream produced are highly favored panelists. Topic: Science and Technology 321 Proposed Application of 2D FFT for Global Lineaments Study Case Central Celebes IslandNorman Syakir Departement FISIKA FMIPA UNPAD Abstract We propose a novel method for determining the plate tectonic direction at certain geology zone use two dimension space spectral approach. Fast Fourier Transform is a power full method for transforming two dimension space data information into two dimension spectral. Characteristic of its spectral has corelation to the information consist in space data. Distribution of lineament and alignment direction on two dimension geology surface has corelation to distribution in two dimension spectral frequency. This distribution characterised by spectral distribution in radian and radial direction. Case study use remote sensing data of Central Celebes Island. The result show the direction of tectonic compression in its area is in sector N117o-127oE. Comparing to the previous study based on non spectral approach N70o-120oE, our proposed method significanly in the same direction of tectonic compression Central Celebes Island. Topic: Science and Technology 322 Matrix Effects on Organic Pollutants Analysis in SedimentMuhammad Yudhistira Azis1, Laurence Asia2, Anne Piram2, Buchari Buchari1, Pierre Doumenq2, Henry Setiyanto1 1 Analytical Chemistry Research Group, Institut Teknologi Bandung, Bandung, Indonesia 2 Laboratoire Chimie de l’Environnement d’Aix-Marseille Université, Aix en Privence, France Abstract Interference from the matrix sample can influence of the accurate analytical method. Accelerated Solvent Extraction (ASE) combine with purification method were tried to separate the organic micropollutants respectively in marine sediment. These matrices were as organic pollutants evaluation in the marine environment. Polycylic Aromatic Hydrocarbons (PAHs), Polychlorinated Biphenyls (PCB) and Organochlorine pesticides (OCs) are three example, organic pollutant in environments which are carcinogenic and mutagenic. Marine sediments are important matrices of information regarding the human activities in coastal areas as well as the fate and behavior of organic pollutants, which are persistent in the long-term. This research purpose to evaluate the matrice effect and the recovery from marine sediment spiking with several standar solution and deuterium of molecular target from organic pollutants. Evaluating the matrice effect could influence the analysis process. Matrice samples was tested from indicate in unpolluted and consumed location. The methods were evaluated with standard calibration curve (linearity > 0.999, LOQ various ranged 0.5-1000 pg.µL-1 and LOD < LOQ). Recovery (YE) relatif, Matrice Effect (ME) relatif correction with deuterium standar were evaluated the interference the matrix. Interference effect from several organochlorine pesticides (OCs) were obtained were highest then others. Topic: Science and Technology 323 Integrated Analysis Seismic Inversion and Rockphysics for Determining Secondary Porosity Distribution of Carbonate Reservoir at “FR” FieldM S Rosid1, F F Augusta1, and M W Haidar2 1 Physics Department, FMIPA Universitas Indonesia, Depok, 16424, Indonesia 2 JOB – Pertamina Petrochina East Java, Menara Kuningan Lt. 18 & 20, Jakarta 12940, Indonesia Abstract In general, carbonate secondary pore structure is very complex due to the significant diagenesis process. Therefore, the determination of carbonate secondary pore types is an important factor which is related to study of production. This paper mainly deals not only to figure out the secondary pores types, but also to predict the distribution of the secondary pore types of carbonate reservoir. We apply Differential Effective Medium (DEM) for analyzing pore types of carbonate rocks. The input parameter of DEM inclusion model is fraction of porosity and the output parameters are bulk moduli and shear moduli as a function of porosity, which is used as input parameter for creating Vp and Vs modelling. We also apply seismic post-stack inversion technique that is used to map the pore type distribution from 3D seismic data. Afterward, we create porosity cube which is better to use geostatistical method due to the complexity of carbonate reservoir. Thus, the results of this study might show the secondary porosity distribution of carbonate reservoir at “FR” field. In this case, North – Northwest of study area are dominated by interparticle pores and crack pores. Hence, that area has highest permeability that hydrocarbon can be more accumulated. Topic: Science and Technology 324 Production of Purple Sweet Potato (Ipomoea batatas L.) Juice with The Best Total Anthocyanin and Antioxidant ActivityGebi Dwiyanti, Wiwi SIswaningsih, Arinda Febrianti Department of Chemical Education, FPMIPA, University of Indonesia Abstract The purpose of the study was to retrieve procedure of production of purple sweet potato (Ipomoea batatas L.) juice with the best total anthocyanin and antioxidant activity. Purple sweet potato was processed into purple sweet potato juice through a process of heating with temperature variations of 70⁰C, 80⁰C, and 90⁰C and vary duration of heating, which are 5 minutes, 10 minutes, and 15 minutes. The total anthocyanin was determined by using pH differential method. The antioxidant activity was determined by using DPPH (2,2-Diphenyl-l-picrylhydrazyl) method. Total anthocyanin of purple sweet potato juice declined in the range between 215.08 mg/L - 101.86 mg/L. The antioxidant activity of purple sweet potato juice declined in the range between 90.63% - 67.79%. Antioxidant activity and total anthocyanin purple sweet potato juice decreases with increasing temperature and duration of heating. The best characteristic found in purple sweet potato juice were made with warming temperatures 80⁰C. Procedure which has produces antioxidant activity, total anthocyanins, and best durability are making procedures purple sweet potato juice on 80⁰C heating temperature for 5 minutes. Topic: Science and Technology 325 Molecular docking study for the prediction of enantioseparation of some chiral carboxylic acid derivatives by methyl-β-cyclodextrinE.S. Nurhidayah, A.L. Ivansyah, M.A. Martoprawiro, M.A. Zulfikar Department of Chemistry, Faculty of Mathematic and Natural Science, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung, West Java, 40132, Indonesia. Abstract A molecular docking study, using molecular mechanics calculations with Arguslab, was used to help predict the enantioseparation of some guest molecule of chiral carboxylic acid derivatives by heptakis-2,6-di-O-methyl-β-cyclodextrin (DIMEB) and heptakis-2,3,6-tri-O- methyl-β-cyclodextrin (TRIMEB) as host molecule. The small differences in the binding free energy values (∆∆G) obtained from Arguslab do not show any significant enantioseparation. From the molecular docking simulation results, it was predicted that in the case of DIMEB as host molecule, R-enantiomer of Etodolac, Fenoprofen, Indoprofen, Ketorolac, and Naproxen will be eluted first than S-enantiomer; However, S-enantiomer of Carprofen, Flurbiprofen, Ketoprofen, Pirprofen, Proglumide, Sulindac, Surprofen, and Zaltoprofen will be eluted first than R-enantiomer by DIMEB as host molecule. It was also predicted that in the case of TRIMEB as host molecule, R-enantiomer of Carprofen, Flurbiprofen, Indoprofen, Ketoprofen, Naproxen, Pirprofen, and Surprofen will be eluted first than S-enantiomer; However, S- enantiomer of Etodolac, Fenoprofen, Ketorolac, Proglumide, Sulindac and Zaltoprofen will be eluted first than R-enantiomer by TRIMEB as host molecule. Topic: Science and Technology 326 EFFECT OF IMPLEMENTATION OF THE GREEN SUPPLY-CHAIN MANAGEMENT MARKETING AND MEDIATION ON THE PERFORMANCE OF ITS COMPETITIVENESS OF PAPER (STUDY ON PAPER INDUSTRY IN WEST JAVA)Osep Hijuzaman and Agus Rahayu 1Management Science Doctoral Studies Program, School of Graduate Studies, Indonesia University of Education (Industrial Engineering Program, STT Wastukancana, Purwakarta, West Java) 2 Indonesia University of Education Abstract The purpose of this study was to determine and analyze the effect of direct and indirect implementation of Green Supply-Chain Management on the Performance Marketing and Competitiveness Mediation Paper Company in West Java province. Object This research is the paper company that existed in West Java Province, which amounts to 30 companies as well as a sample of research, while variables studied are Variable Green Supply-Chain Management, Company Competitiveness Variable and Variable of Paper Marketing Industry Performance in West Java Province. The method used SEM with Variance Based or Component Based with Software used is SmartPLS 3.0. Conclusion This research is: 1. There is no Effect of Competitiveness on Marketing Performance in Paper Companies in West Java Province. 2. There is a Direct Effect of GSCM Implementation on Paper Competitiveness of Paper Companies in West Java Province. 3. There is a Direct Influence of GSCM Implementation on Marketing Performance in Paper Companies in West Java Province. 4. The Companys Competitiveness does not mediate the Effect of Green Supply-Chain Management Implementation on Paper Marketing Performance in West Java Province. Topic: Science and Technology 327 Potential Threats on Pottery as Local Wisdom in Sitiwinangun Cirebon DistrictDian Permana Putri Swadaya Gunung Djati University Abstract This study is aimed to find out the type of threats of pottery as a locawisdom of Sitiwinangun Village. The study used qualitative approach which included observation, interviews, direct involvement and literature study as technique to collect the data. The data was analyzed by descriptive exploratory analysis. The finding results showed that the production of Sitiwinangun pottery, in the technique and motifs, were still produced according to the ancestors. Pottery has a closed-relationship to agrarian culture of Sitiwinanguns society. In cultivating season, the soil was used not only used to cultivate rice and palawija (crops plantes as second crop in dry season) but it was also used to dig a layer of soil as the raw material of pottery. There were some potential threats on Sitiwinangun Pottery such as a reduction in raw material because of the land-settlement, slow regeneration, and consumers preferred on household appliance made of plastic. Nevertheless, it never decreases the spirit of Sitiwinangun society to maintain the pottery as their local wisdom. They keep on their principle that the nature gives the value on their life and the value is an ancestral heritage that must be maintained in modern era in order to preserve the environment. Furthermore, the most important is that pottery is not only made as the functional object for human but it is made as the local knowledge of Topic: Science and Technology 328 A PROTOTYPE OF THE SMART OFFICE SYSTEM FOR IOT-BASED SECURITY SYSTEMTri Ferga Prasetyo, Dadan Zaliluddin, M. Iqbal Faculty of Engineering, Informatics Engineering, Majalengka University Abstract Creating new technology in the modern era can have a good impact for business and industry. As the utilization of new communication technology that is internet of things very helpful in realizing smart system like smart home, smart office, smart parking and smart city. This study aims to create a security system on the prototype smart office system based on internet of things. Smart office system development method using waterfall model. Prototype smart office based internet of things by using flatform (project builder) cayenne so that data can be accessed and controlled through internet network from long distance. Smart office system using arduino mega 2560 microcontroller as controller component. Smart office system is able to detect threats of dangerous objects made from metals, earthquakes, fires, intruders or theft and perform security monitoring outside the building by using raspberry pi cameras on autonomous robots in real time to the security guard. Topic: Science and Technology 329 Environmentally Stable Perovskite Film for Active Material of High Stability Solid State Solar CellsA. Bahtiar1,*, M. Putri1, E. S. Nurazizah1, Risdiana1 and Y. Furukawa2 1Department of Physics, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21 Jatinangor Sumedang Jawa Barat Indonesia 45363 2Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan Abstract Perovskite solar cells have been recently achieved high power conversion efficiency beyond 20% which is above the phsycological barrier for mass production and commercialization. However, the problem of stability to the environment, in particular to the humidity is still needed to be solved, therefore several efforts are intensively investigated such as finding new stable perovskite materials, interface engineering, optimimization of perovskite morphology and encapsulation of solar cells. We studied new perovskite material lead (II) thiocyanate [Pb(SCN)2] in ambient air with humidity above 90%. We prepared perovskite film by use of two-step method combination of spin-coating and dip-coating technique. The Pb(SCN)2 film was first spin-coated either on bare glass or TiO2 coated glass and then followed by dipping it into methylammonium iodide (MAI) solution. The UV-Vis spectrum of Pb(SCN)2 film shows absorption at wavelength shorter than 400 nm. Meanwhile, perovskite MAPb(SCN)XI3-X film absorps light ranging from 300 nm to 760 nm, which shows that the perovskite film can absorp more light to be converted into free charge carrier for generating electricity in solar cells. The XRD patterns shows that perovskite peaks are clearly observed which confirms that perovskite is already well formed. We also observe no significant changes in XRD pattern of perovskite films after stored for five days at ambient air with humidity exceed 90%. This result shows that perovskite MAPb(SCN)XI3-X film is environmentally stable, therefore high stability perovskite solar cells is expected to be produced in ambient air with high humidity. Moreover, SEM images of surface morphology shows no “pin-hole” is observed in the films which means that the MAPb(SCN)XI3-X is a promising candidate active material for high efficiency perovskite solar cells. Topic: Science and Technology 330 Simulation and Optimization Performance of GaAs/GaAs0,5Sb0,5/GaSb Mechanically Stacked Tandem Solar CellsA Suhandi1,a), Y R Tayubi1), A Samsudin1) and P Arifin2) 1)Departemen Pendidikan Fisika,Universitas Pendidikan Indonesia, Bandung 40154, Indonesia. 2)Prodi Fisika, Institut Teknologi Bandung, Bandung40132, Indonesia a)Email: andi_sh[at]upi.edu Abstract Abstract: Different approaches have been made in order to reach higher solar cells efficiencies. Concepts for multilayer solar cells have been developed. This can be realised if multiple individual single junction solar cells with different suitably chosen band gaps are connected in series in multi-junction solar cells. In our work, we have simulated and optimized solar cells based on the system mechanically stacked using computer simulation and predict their maximum performance. The structures of solar cells are based on the single junction GaAs, GaAs0.5Sb0.5 and GaSb cells. We have simulated each cell individually and extracted their optimal parameters (layer thickness, carrier concentration, the recombination velocity, etc), also, we calculated the efficiency of each cells optimized by separation of the solar spectrum in bands where the cell is sensible for the absorption. The optimal values of conversion efficiency have obtained for the three individual solar cells and the GaAs/GaAs0,5Sb0,5/GaSb tandem solar cells, that are: eff=19,76% for GaAs solar cell, eff = 8,42% for GaAs0,5Sb0,5 solar cell, eff=6,86% for GaSb solar cell and eff = 35,04% for GaAs/GaAs0,5Sb0,5/GaSb tandem solar cell. Conversion efficiency values achieved by GaAs/GaAs0,5Sb0,5/GaSb tandem solar cells are quite high. This shows that the GaAs/GaAs0,5Sb0,5/GaSb tandem solar cell system can be an alternative solution to the problems faced in the development of solar cells today that is the problem of low conversion efficiency achieved by solar cells. Keywords: Simulation, Solar Cells Performance, GaAs/GaAs0,5Sb0,5/GaAs Tandem Solar Cells, Mechanically Stacked Topic: Science and Technology 331 Use of Marsh and Mangrove Sediment as the Inoculum Source of Sulphate Reduction Bacteria in Reducing Sulphate of Acid Mine DrainageFahruddin, Asadi Abdullah, Nursiah La Nafie Biology Department Hasanuddin University Makassar Abstract The contamination of acid mine drainage can reduce with using bacteria of sulphate reduction which were found excessively in sediment. This research aims to know the influence of marsh and mangrove sediment as the inoculum source of sulphate reduction bacteria in reducing sulphate and increasing pH of acid mine drainage. The treatment was made in bioreactor which consisted of acid mine drainage by using sediment and compost.. The concentration of sulphate was measured by using spectrophotometer 420 nm; and the change of pH was measured by using a pH meter each 5 days. During the process of incubation, it was also counted the growth number of sulphate reduction bacteria by using standard plate count method and using the medium of postgate which was also conducted each 5 days. The research result shows that sediments treatment in acid mine drainage can reduce the sulphate and increase pH. The treatment of acid mine drainage by using mangrove sediment (P1) was more effective to reduce sulphate and at once increase pH of acid mine drainage which became 0,39 ppm and pH 6,9 rather than the treatment of acid mine drainage by using marsh sediment (P2), the sulphate concentration only decreased until 0,50 ppm and pH increased 6,4. Thus, in observation of sulphate reduction bacteria growth was comparable with the change of sulphate and in increasing of pH on both treatments of sediment, while in the treatment of using only compost (P3), the sulphate was not decreased that was 1,30 ppm in the beginning of incubation to be 1,24 ppm in final of incubation and the treatment without using sediment and compost (P4) as the control shows that there was almost no change either in sulphate and pH and also there was no sulphate reduction bacteria growth on both treatments. Topic: Science and Technology 332 Effect Of Visible Light on Secondary Metabolite Profile and Antioxidant Activity of Germinated Brown RiceSiti Aisyah, Ranika Sihombing, Zackiyah, Heli Siti H. Munawaroh Department of Chemistry Education, Universitas Pendidikan Indonesia Abstract Germination of brown rice, in addition to improving the texture of the resulting rice, can also increase the nutrient content in rice. This study aims to determine the effect of visible light (red, blue, yellow, and green) to the percentage of germination brown rice, profile of secondary metabolite compounds and antioxidant activity in germinated brown rice. The germination process was carried out using a laboratory-scale, simple machine designed and optimized to provide conditions that support the germination process. While LED light was used as visible light sources. Analysis of secondary metabolite content in brown rice was done using LC/MS (Liquid Chromatography/Mass Spectrometry) while antioxidant activity was tested by DPPH method (2,2-diphenyl-1-picrylhydrazil). The result indicate that the percentage of brown rice germination in the dark (42,7%) is higher than germination with visible light red (28,5%), blue (26,4%), yellow (29,5%), and green (22%). LC Chromatogram data show that germinated brown rice under visible light contains more secondary metabolites than germinated brown rice in dark condition. Antioxidant activity test show that germinated rice in dark condition (22,5%) did not differ significantly to the germinated rice under red (21,3%), blue (23,0%), yellow (20,1) and green (24,7%) visible light. Topic: Science and Technology 333 APPLICATION OF EDIBLE COATING FROM CASSAVA PEEL-BAY LEAF ON AVOCADOMustika N Handayani1*, Siti Karlina2, Yatti Sugiarti2, Dewi Cakrawati2 Universitas Pendidikan Indonesia Abstract Avocados have a fairly short shelf life and are included in climacteric fruits. Edible coating application is one alternative to maintain shelf life of avocado. Cassava peel starch is potential to be used as raw material for edible coating making. Addition of bay leaf extract containing antioxidants, can increase functional value of edible coating. The purpose of this study is to know the shrinkage of weight, acid number, color change and respiration rate of avocado coated with edible coating from cassava starch with addition of bay leaf extract. The study consisted of making cassava peel starch, bay leaf extraction, edible coating making, edible coating application on avocado, and analysis of avocado characteristics during storage at room temperature. The results showed that addition of bay leaf extract on cassava peel starch edibel coating applied to avocado, effect on characteristics of avocado. Avocado applied edible coating and stored at room temperatures had decreased weight lower than avocado which not coated edible coating, lower acid number, tend to be more able to maintain color rather than avocado without edible coating. Topic: Science and Technology 334 Zn-Induced Development of the Cu-Spin Correlation in Electron-doped Superconducting Cuprates of Eu2-xCexCuO4Risdiana 1), T. Saragi 1), W. A. Somantri 1), S. Pratiwi 1), D. Suhendar 1), M. Manawan 1), B. J. Suroto 1), I. Watanabe 2) 1) Department of Physics, Padjadjaran University, Jl. Raya Bandung-Sumedang km. 21 Jatinangor, Sumedang 45363, Indonesia 2) Advanced Meson Science Laboratory, Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan Abstract The electron-hole doping symmetry in high-Tc superconductors has attracted great research interest in relation to the mechanism of the high-Tc superconductivity. Formerly, we have performed zero-field (ZF) muon-spin-relaxation (muSR) measurements in the hole-doped cuprates La2-xSrxCu1-y(Zn,Ni)yO4 and have found the impurity-induced development of the Cu-spin correlation in a wide range of hole concentration where the superconductivity appears, suggesting the intimate relation between the Cu-spin correlation and superconductivity. For the electron-doped cuprates Pr1-xLaCexCu1-yZnyO4, on the other hand, we have found from ZF-muSR the absence of the Zn-induced development of the Cu-spin correlation. We have performed ZF-muSR measurements in electron-doped cuprates Eu2-xCexCu1-yNiyO4 (ECCNO) and Eu2-xCexCu1-yZnO4 (ECCZO). It has been found that the Cu-spin correlation is developed at low temperatures through Ni and Zn substitution. Topic: Science and Technology 335 Characterization of AC Current Sensor Based on Giant Magnetoresistance and Coil for Power Meter DesignHafshah Suria Dhani, Ahmad Aminudin, Waslaluddin Physics Department, Universitas Pendidikan Indonesia, Dr. Setiabudhi Street No. 229, Bandung 40154, Indonesia Abstract Electric current is the basic variable of measurement in instrumentation system. One of the current measurements had been developed was based on magnetic sensor. Giant Magnetoresistance (GMR) produces an output voltage when it detects the magnetic field from electric current flow. The purpose of this study was to characterize the response of GMR when variation number of coil was given. The GMR used was IC NVE AA002 series. The characterization was the GMR voltage response to the AC current values from 0.01 to 5.00 A. The linearity of the relation was reaching saturation point when the magnetic field measured >10.5 Oe at room temperature. As the number of coil increased, the earlier saturation occurred. To see the sensitivity of the sensor response, the data graph was cut off at 1.56 A AC. From this research, we got single coil was ideal to measure electric current >1.56 A AC, as the relation of GMR voltage to the current tended to maintain its linearity. For measure $$\leq$$1.56 A AC, coil number addition would increase the sensitivity of sensor response. This research hopefully will be benefit for further development using an electric current measurement based on GMR magnetic sensor for power meter design. Topic: Science and Technology 336 Submerged plant’s ability to present photosynthesis based on oxygen productionB Supriatno, K Ulfa* 1Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia 2Program Studi Pendidikan Biologi, Sekolah Pascasarjana Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to provide information about alternative experimental photosynthesis for experimental teaching practices in school in the coastal region. The research method was conducted experimentally by taking examples of Submerged plant in littoral area of Leuweng Sancang beach, Garut. Plant samples were given the same light intensity treatment, then the oxygen productivity was studied as an indicator of photosynthesis rate. The results showed that there were different photosynthetic rates in different types of submerged plants. Algae as submerged plants generally photosynthesize at high light intensity. However, there are also plants with photosynthesis in low light. The comparison between sea grass (Thallasia sp) with sea weed (Ulva sp) shows the difference in oxygen productivity. Submerged plants based on their ability to produce measurable oxygen can be utilized for experiments on photosynthesis learning. Topic: Science and Technology 337 THE CHARACTERISTICS OF ELECTRICAL AND PHYSICAL PROPERTIES OF PEAT SOIL IN RASAU VILLAGE, WEST KALIMANTANAhmad Aminudin, Tania Rohmatul Hasanah, Mimin Iryanti Departemen Fisika, Universitas Pendidikan Indonesia Jl. Dr.Setiabudi No.229 Bandung, Jawa Barat Indonesia Abstract The Electrical and physical properties can be used as indicators for measuring soil conditions. One of the methods developed in agricultural systems to obtain information on soil conditions is through measuring of electrical conductivity. Peat soil is one of the natural resources that exist in Indonesia. This study aims to determine the characteristics of peat soil in Rasau village, West Kalimantan. This research was conducted by analyzing the properties of electrical conductivity and water content using 5TE Water Contens and EC Sensor equipment, but also to know the change of physical nature of peat soil covering peat soil and peat type. The results showed that the electrical conductivity value of 1-4 samples was 0.02 -0.29 dS/m and the water content value (VWC) was 0.255-0.548 m3/m3 and the physical characteristics obtained were peat color Brown to dark brown that allegedly the soil still has a very high content of organic material derived from weathering plants and there are discovery of wood chips, wood powder and leaf powder on the ground. Knowing the information is expected to identify the land needs to be developed to be considered for future peat soil utilization. Topic: Science and Technology 338 Metallothionein Analysis and Cell Damage Levels On the Liver and Of Barbonymus gonionotus In Brantas River, IndonesiaA Hayati 1, N Yuliarini1a, H Widyana1, I Rindaputri, P A Ika 1, N Auliya1, A Soegianto1 1Departement of Biology, Faculty of Science and Technology, Airlangga University, Kampus C, Jl.Mulyorejo, Surabaya 60115, Indonesia. a)nitayuliarini[at]gmail.com Abstract This study aims to analyze the levels of metallothionein and damage liver cells of fish (Barbonymus gonionotus) who live in the Brantas River (upstream and downstream), and the correlation levels of metallothionein in the liver of fish with time variation different sampling (March , June, September, 2016). Fish gets caught by net of 2 stations (Karangkates Reservoir and the Kali Jagir) selected randomly as each location and time of sampling each 2 tail, fish liver were taken for hystopathological analysis and levels of metallothionein use ELISA method. Results liver hepatocyte cells in Karangkates are most normal, in the Kali Jagir are necrosis, levels metallothionein liver fish in Reservoir Karangkates lower than in Kali Jagir. The conclusion that the damage to the liver in Kali Jagir more than Karangkates Reservoir so levels of metallothionein the highest is also available on the Kali Jagir, because metallothionein is scavanger for fish. Topic: Science and Technology 339 Simulation and Optimization Performance of GaAs/GaAs0,5Sb0,5/GaSb Mechanically Stacked Tandem Solar CellsYuyu R Tayubi1,a), A Suhandi1), A Samsudin1) and P Arifin2) 1)Departemen Pendidikan Fisika,Universitas Pendidikan Indonesia, Bandung 40154, Indonesia. 2)Prodi Fisika, Institut Teknologi Bandung, Bandung40132, Indonesia a)Email: rachmat[at]upi.edu Abstract Abstract: Different approaches have been made in order to reach higher solar cells efficiencies. Concepts for multilayer solar cells have been developed. This can be realised if multiple individual single junction solar cells with different suitably chosen band gaps are connected in series in multi-junction solar cells. In our work, we have simulated and optimized solar cells based on the system mechanically stacked using computer simulation and predict their maximum performance. The structures of solar cells are based on the single junction GaAs, GaAs0.5Sb0.5 and GaSb cells. We have simulated each cell individually and extracted their optimal parameters (layer thickness, carrier concentration, the recombination velocity, etc), also, we calculated the efficiency of each cells optimized by separation of the solar spectrum in bands where the cell is sensible for the absorption. The optimal values of conversion efficiency have obtained for the three individual solar cells and the GaAs/GaAs0,5Sb0,5/GaSb tandem solar cells, that are: eff=19,76% for GaAs solar cell, eff = 8,42% for GaAs0,5Sb0,5 solar cell, eff=6,86% for GaSb solar cell and eff = 35,04% for GaAs/GaAs0,5Sb0,5/GaSb tandem solar cell. Conversion efficiency values achieved by GaAs/GaAs0,5Sb0,5/GaSb tandem solar cells are quite high. This shows that the GaAs/GaAs0,5Sb0,5/GaSb tandem solar cell system can be an alternative solution to the problems faced in the development of solar cells today that is the problem of low conversion efficiency achieved by solar cells. Topic: Science and Technology 340 DESIGN AND DEVELOP MULTIMEDIA LEARNING BASED ON ADVENTURE GAME WITH EXPERIENTIAL LEARNING MODEL IN PEMOGRAMAN DASAR LESSON LEARNING TO INCREASE KOGNITIVES STUDENTSRisda Zaidah, Enjang Ali Nurdin, Eki Nugraha Universitas Pendidikan Indonesia Abstract This research is motivated by the problems that researchers encounter in the field that is the use of media powerpoint and learning model that is teacher learning centre less felt to be able to improve students cognitive understanding in the material of Branching Algorithm on the discipline of Basic Programming. Therefore, the need for media and learning models that can help improve students learning skills in Branching Algorithm. One alternative used by researchers to solve the problem is by using multimedia-based learning adventure game with experientieal learning model. This research aims to design and build a multimedia based learning adventure game with experiential learning model on basic programming subjects, to know the improvement of students cognitive understanding and student responses after using adventure game based learning multimedia with experiential learning model. The method used in this research is Reseach and Development (R&D). The results of this research are: 1) Multimedia developed according to like by media expert with percentage 79.34% which is categorized well and by material expert with the percentage 84.97% which is categorized very good, 2) After students use multimedia based learning adventure game with experiential learning model there is cognitive improvement seen from result of test of average gain of all student equal to 0.46 which indicate existence of cognitive improvement which categorize is, 3) Students assessment of developed multimedia is categorized very well with a percentage of 82.94%. Topic: Science and Technology 341 Utilization of Wasted Cockle Shell as a Natural Coagulant and a Neutralizer of Polluted Water In Bangka Belitung Islands, IndonesiaYuant Tiandho, Herman Aldila, Mustari, Megiyo, Fitri Afriani; Department of Physics, Universitas Bangka Belitung Jl. Kampus Peradaban, Merawang, Bangka Belitung Islands 33172 Abstract Bangka Belitung Islands is the largest tin producer in Indonesia. The high activity of tin mining caused the environmental damage which had an impact on the emergence of clean water crisis in some areas in this province. In this paper, a simple water quality improvement method based on wasted cockle shell was developed. Based on x-ray diffraction analysis it is known that calcination of cockle shell powder at 700°C will decompose the powder into calcium oxide compound. The addition of calcined cockle shell powder into acidic water from Merawang Sub-district will increase the pH of water through the process of forming hydroxide groups in the water. The calcined cockle shell powder can also coagulate pollutants in some polluted water from Koba Sub-district. The coagulation results were analyzed using SEM/EDS. Topic: Science and Technology 342 Characteristics of Symmetric Supercapacitor Model Based on Thermal Reduced Graphene OxideFitrilawati1, Vika Marcelina1, Ayi Bahtiar1, N Syakir1, Yeni W Hartati2 1)Departement of Physics, Universitas Padjadjaran 2)Departement of Chemistry, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM21, Sumedang 45363, West Java, Indonesia Abstract We demonstrated symmetric supercapacitor using thermal reduced Graphene Oxide (rGO) films as electrodes and aqueous electrolyte. The Graphene Oxide (GO) films were prepared on ITO (indium tin oxide) substrates from GO dispersed in water using spincoating technique. We varied the concentration of GO dispersion in order to obtained varied GO thickness. The rGO film were obtained by thermal reduction process of GO using thermal heating at 200 C for 1 hour under nitrogen flowing. The supercapacitor model with size of 1 cm2 was prepared from a pair of rGO-ITO electrodes that one was inverted on top of other and separated by a filter paper as separator that soaked in electrolyte. We used KCl and HCl as electrolyte. Performance of the supercapacitor model was investigated using cyclic voltammetry (CV) in range of 0.0 volts to +0.9 volts with varied scan rate. From the CV data we calculate specific capacitance of prepared supercapacitor model. We found that thickness of electrode, type and concentration of electrolyte, highly influenced the supercapacitor electrolyte. Topic: Science and Technology 343 Exfoliation of Graphite into Graphene Using Fatty Acid Based Ionic Liquid: A Preliminary StudyAhmad Mudzakir, Asep Bayu Dani Nandiyanto, Kurnia and Sendy Arfian Saputra Department of Chemistry Education, Indonesia University of Education, Indonesia Abstract The study was conducted to explore fatty acid based ionic liquid as potential of ionic solvent in grafit exfoliation process into graphene. Three source of graphite was used in the experiments, i.e. synthetic graphite, new battery graphite, and waste battery graphite. Exfoliation study was performed using cis-oleyl-imidazolinium acetate as a fatty acid based ionic liquid with two exfoliation method, i.e. sonication and electrochemical exfoliation. The Infrared spectroscopy (FTIR study) results indicate that exfoliation process was successfully performed. Exfoliation process change crystallization degree, distance between layers, and the crystal size. The Scanning Electron Microscope (SEM) images show that the multilayer graphene was formed by the exfoliation. The Ultra-Violet-Visible (UV-Vis) spectroscopy indicated that there was a π to π* transition as a result of graphite exfoliation. The electrical conductivity of synthetic graphite, new battery graphite, and waste battery graphite after exfoliation process are 11.58 x 10-1 S.cm-1, 9.32 x 10-1 S.cm-1, and 7.96 x 10-1 S.cm-1. These results show that the process increase electrical conductivity by 10 times, 2 times, and 4 times respectively. The reported study support development of a new low cost fatty acid based ionic liquid for use in the ionic solvent-assisted graphite exfoliation. Topic: Science and Technology 344 Application on Electropuncture to Reduce Major Depressive Disorder in High School StudentsZahra Fadhilah, Ikrimah Thoriq, Enggi Julianto Indonesia University of Education Abstract Teen age (early puberty to early adulthood), is a very vulnerable age for students, especially high school students. At this age there is a hormonal turmoil that has implications on students emotions. If emotions can’t be well channeled, It could be stressful to students that can reduce their performance in school, especially in the learning process. Furthermore, this level of stress and emotional stability if not handled wisely can lead to the occurrence of social deviant behavior in students that can damage students’ future. For that we need a response to deal with this problem. At the beginning of the 21st century developed the application of conventional acupuncture therapy techniques into modern acupuncture with the help of electric stimulators (electropuncture). The results of previous research indicate that electrical stimulation at certain acupuncture points can stimulate the secretion of certain hormones, one of the anti-depressant hormones. Non-invasive techniques of elecropuncture (n-EA) at cranial points (Yintang, Shenting, Si-Shen-Chong, and Bhai-Hui). Will stimulate secretion of the hormone selective serotonin reuptake inhibitors (SSRIs) that are antidepressant. So the application of this therapy technique can be an alternative to handle Major Depressive Disorder (MDD) in high school students. The results are measured through Self Depression Scale (SDS). Decreasing stress levels through decreasing student BDI shows that electropuncture therapy at this cranial point can be a safe and effective alternative solution to decrease the students SDS level in the learning process. Topic: Science and Technology 345 Synthesize of silver-Indonesian velvet bean (Mucuna pruriens) seed extract nanoparticles (AgMPn) and evaluate its potency in lowering catalepsy in miceRatnaningsih Eko Sardjono(a)*, Fitri Khoerunnisa(a), Iqbal Musthopa(a), Neng Sri Mulkiyatul Maliah Akasum(a), Rahmi Rachmawati(a) (a) Universitas Pendidikan Indonesia, Bandung, Indonesia Abstract Parkinson is one of the progressive neurodegenerative diseases. Various efforts are made in handling this disease, one of them is the utilization of plant extracts that have antiparkinson activity, for example, velvet bean (Mucuna pruriens L.). Changing the particle size of the extract into nanoscale particle is expected to increase its antiparkinson activity. The research was conducted to synthesize silver-velvet bean (Mucuna pruriens L.) seed extract nanoparticles (AgMPn) and to evaluate its antiparkinson activity through the catalepsy test in mice. The research consisted of several stages i.e. extraction of velvet bean seed powder, synthesis and characterization of AgMPn, and catalepsy test of AgMPn. Velvet bean seed powder was extracted by maceration method using ethanol-water (1:1) at pH 3 adjusted with citric acid. AgMPn was synthesized by reacting the silver nitrate (AgNO3) solution with the extract of velvet bean seed for 40 min, dispersibility of solution during the reaction was controlled by using sonication and ultrasonic processor homogenizer. Characterization of AgMPn was done by using Fourier transform infrared (FT-IR), scanning electron microscopy-energy dispersive X-ray (SEM-EDX), and transmission electron microscopy (TEM). Catalepsy test was conducted on AgMpn at the doses of 5, 10, 15, 20 and 25 mg/kg body weight. The results of SEM-EDX and TEM showed that AgMPn formed aggregates with several shapes such as rectangle, oval, and spherical, with the average particle diameter was 36.5 nm. FT-IR spectra showed a band at 464.8 cm-1 absorbance area which is typical band indicated the interaction of Ag-O of AgMPn. Catalepsy test demonstrated that AgMPn at the doses of 5, 15, and 20 mg/kg body weight lowered the catalepsy symptoms in mice significantly, with the best dose was 5 mg/kg body weight. Topic: Science and Technology 346 Location of Sinabung Volcano Magma Chamber on 2013 Using Levenberg-Marquardt Inversion SchemeRatih Kumalasari1,3,a, Wahyu Srigutomo1,b, Mitra Djamal1,c , Irwan Meilano1,d , Hendra Gunawan2,e 1. Bandung Institute of Technology, Jl. Ganesa 10 Bandung, Indonesia 40132 2. Directorate of Volcanology and Geological Hazard Mitigation, Jl. Diponegoro 57 Bandung, Indonesia 40122 3. Bung Karno University, Jl. Pegangsaan Timur 17 Jakarta, Indonesia 10320 a. kumalararatih[at]gmail.com b. Wahyu[at]fi.ib.ac.id c. mitra[at]fi.itb.ac.id d. irwan.meilano[at]gmail.com e. hendrapvmbg[at]gmail.com Abstract Sinabung Volcano has been monitoring using GPS after his eruption on August 2010. We Applied Levenberg-Marquardt Inversion Scheme to GPS data on 2013 because deformation of Sinabung Volcano in this year show an inflation and deflation, first we applied Levenberg-Marquardt to velocity data on 23 January 2013 then we applied Levenberg-Marquardt Inversion Scheme to data on 31 December 2013. From our analysis we got the depth of the pressure source modeling results that indicate some possibilities that Sinabung has a deep magma chamber about 15km and also shallow magma chamber about 1km from the surface. Topic: Science and Technology 347 A PC-Based High Temperature Gas Reactor Simulator for Indonesian Conceptual HTR Reactor Basic TrainingSyarip 1), Li-Chi Cliff Po 2) 1). Center for Accelerator Science & Technology, National Nuclear Energy Agency, Yogyakarta, POB 6101 ykbb, Indonesia 2). Micro-Simulation Technology 10 Navajo Court, Montville, New Jersey 07045 Abstract In planning for nuclear power plant construction in Indonesia, helium cooled high temperature reactor (HTR) is favorable for not relying upon water supply that might be interrupted by an earthquake. The National Nuclear Energy Agency (BATAN) is initiating for development of experimental power reactor (RDE) with the objective, among others: to demonstrate a small NPP which operates safely, to increase mastery of NPP technology in the field of design, construction and operation and maintenance. For training its personnel, BATAN has cooperated with Micro-Simulation Technology of USA to develop a 200 MWt PC-based simulation model PCTRAN/HTR. It operates in a Win10 environment with graphic user interface (GUI). Normal operation of startup, power maneuvering, shutdown and accidents including pipe breaks and complete loss of AC power have been conducted. Owing to HTR’s unique fuel property and helium gas characteristic, the core will never fail under any possible circumstances. A safety analysis simulation to demonstrate the inherent safety features of RDE (HTR-10) was done for helium pipe break malfunction scenario. The analysis was done for the variation of primary coolant pipe break i.e. from 0,1% - 0,5 % and 1% - 10 % helium gas leakages, while the reactor was operated at the maximum constant power of 10 MWt for 5000 s. The analysis result shows that the highest temperature of RDE coolant is 1296 °C and the helium pressure after 9% pipe break is 8 MPa. With 10 kg/s of helium flow in the reactor core, the thermal power will be back to the startup position after 1287 s of helium pipe break malfunction. Topic: Science and Technology 348 Utilization of Functional Simulator for the Teaching ‘Technology and Safety Systems of NPP’ at POINT-BATANSyarip; Puradwi IW Centre for Science & Accelerator Technology, National Nuclear Energy Agency, JL. Babarsari, POB 6101 ykbb, Yogyakarta 55281, Indonesia. Abstract Advanced nuclear power plant (NPP) functional simulator has been used in the education teaching process at the Polytechnic Institute of Nuclear Technology (POINT) BATAN for the subject of teaching ‘NPP Technology System’. As a case study, the students are given the task to perform normal operation and to analyze the performance of passive safety systems at nuclear power plant of Advanced Pressurized Water Reactor (APWR) type. The parameters being analyzed were reactor power status trend and cooling system in removing heat from reactor core to prevent fuel melting in the event of loss of coolant accident. The scenario simulated is the loss of coolant accidents or small break loss of coolant accident (SBLOCA). SBLOCA accident analysis is performed by running software APWR simulator obtained from IAEA. The analysis showed that passive cooling systems of APWR was able to work well to transfer heat from the reactor core in the event of loss of coolant accident. Based on the simulation it was shown that reactor will scram immediately following the event of SBLOCA and the reactor power (neutron flux) promptly down to zero, whilst the reactor thermal power will reach 0,002% of full power within 10 hours. The fuel temperature post the SBLOCA will reach 117 °C within 10 hours, it means that the reactor was safe. The use of this functional simulator could help students in understanding the process of reactor operation and the process of occurrence of loss of coolant accident and the way of handling it. Topic: Science and Technology 349 Temperature effect on separation Gd3+ from Gd-DTPA-folate with nanofiltration methodIman Rahayu*, Reztia Putri Indraneli, Yati B. Yuliyati, Anni Anggraeni, Ukun MS Soedjanaatmadja, and Husein H Bahti Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21 Jatinangor, Sumedang 45363, Indonesia, Telp/Fax 022 7794391 Abstract MRI is one of the best techniques in medical diagnotics. Contrast agents used to improve the visual of organs that are difficult to distinguish through MRI. Gd-DTPA-folate is one of the specific contrast agents against cancer diagnosis, because it has a high affinity to folate receptors. In the complexing Gd-DTPA-folate, does not rule out the complexity step runs imperfectly, so there is still Gd3+ in the Gd-DTPA-folate complex. The separation of Gd3+ from the Gd-DTPA-folate complex is important to eliminate toxic effects on the contrast agent. This study aims to determine the effect of temperature on the separation of Gd-DTPA-folate from Gd3+ with nanofiltration. The method are preparation Gd-DTPA-folate from GdCl3.6H2O and DTPA-folate by reflux method, then separated Gd-DTPA-folate complex from Gd3+ with nanofiltration at variation temperature (40, 41, 42, 43, 44oC ). Then determined the value of flux and rejection coefficient. Thel results of the experiment, optimum temperature of the separation Gd3+ from Gd-DTPA-folate by nanofiltration is 42.6oC with rejection coefficient 24% and the permeate flux is 403 L.m-2.h-1. Topic: Science and Technology 350 Sustainable Energy Development Of Bio-Briquettes Based On Rice Husk Blended Materials: An Alternative Energy SourceSri Suryaningsih, Otong Nurhilal Departement of Physics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran Abstract The bio briquette calorific value of rice husks in some studies before it obtained a relatively low value of 3,221-3350 cal /g. As an abundant biomass up to 21 million tons per year, it is unfortunate if it is not utilized. The purpose of this research is to increase the calorific value of rice husk husk briquettes with a variation of coconut shell charcoal and corncob with various composition ratios of 50%: 50% and 80%: 20%, to reach the optimal value to be applied in the industrial sector. Carbonization process was carried out at a temperature of 400-500 ° C for 1.5 hours. From the result of the proximate analysis test at 450 °C carbonization temperature, it can be seen that the best briquette value is in the composition of rice husk charcoal 50%: 50% and coconut shell charcoal, containing 47.92% Fixed Carbon, 8.52% Moisture Content, 23.40% Volatile Matter and 20.16% Ash Content. The calorific value of 4,886 cal / g, slightly higher than the East Kalimantan coal standard of 4,828 cal/g. Hence, this bio briquettes are suitable for small scale industry aplication dan household community use. Topic: Science and Technology 351 Acetic acid production from Manalagi apple (Malus sylvestris Mill) with mixed cultures of Saccharomyces cerevisiae and Acetobacter acetiKeukeu Kaniawati Rosada Departemen Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Unpad. Jl. Raya Bandung Sumedang Km. 21 Jatinangor, Sumedang 45363 Abstract The production of acetic acid from Manalagi apple were studied using a mixed culture of S. cerevisiae and A. aceti by the submerge fermentation technique. Basically, acetic acid is produced by the obligate aerobic bacteria A. aceti from alcohol substrate, while alcohol is produced by S. cerevisiae through sugar fermentation anaerobically. Determination of the best conditions for producing acetic acid was performed by stratified optimization with variations that were made on the concentration of the initial sugar addition to the medium (0%, 10%, 15%, and 20%), the ratio of the number of inoculum S. cerevisiae and A. aceti (7:3, 1:1, and 3:7), and agitation (80 and 150 rpm). The first step was the determination of the best initial sugar addition to the medium by determining the ratio of 1: 1 inoculum and 80 rpm of shaking speed. Next, the best number of inoculum ratio was determined by using the amount of initial sugar addition of the first stage results and 80 rpm of agitation. The last step, the best agitation was determined by using the best amount of initial sugar addition and the best ratio of inoculums of the second stage results. All experiments were done by using the initial pH medium of 4.5 and incubated at room temperature (28±2oC). The concentration of reduced sugar, alcohol, acetic acid and the pH were measured every two days for 14 days of fermentation period to evaluate the change of glucose to acetic acid. The efficiency of sugar convertion to acetic acid with the addition of initial sugar 0%, 10%, 15%, and 20% were 233%, 46.6%, 10.7%, and 6.4% respectively after ten days of incubation. Overall, the results showed that the highest acetic acid were produced from Manalagi apple juice when no sugar was added, using seven parts of S. cerevisiae to three parts of A. aceti and 150 rpm of agitation on the tenth day of fermentation. Topic: Science and Technology 352 Effect of pH, Temperature, and Electrolytes concentration on Swelling Behavior of Poly (vinyl alcohol)/ Acrylamide/ Graphite Oxides based HydrogelsHendrawan, Fitri Khoerunnisa, Rimadina Nurulhikmah Department of Chemistry, Indonesia University of Education Abstract We developed hydrogels based on poly (vinyl alcohol)/ PVA, acrylamide (Aam), and graphite oxide (GO) composites. The effect of environmental conditions i.e. pH, temperature, and electrolyte concentration to swelling behavior of hydrogel was systematically investigated. Hydrogels were prepared by solution mixing method at volume ratio of 5:10:4 for PVA, Aam, and GO, respectively. The hydrogels were characterized by means of several methods i.e FTIR spectroscopy, X-X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM). The influence of pH, temperature, and electrolytes concentration to swelling behavior of hydrogels were evaluated sequentially. The results showed that hydrogels have the asymmetric porous structures and heterogeneous pore size distribution. The FTIR spectra confirmed the interaction between PVA, AAM, and GO in hydrogel matrix which shown by the shift of peak position and intensity of their typical functional groups. The swelling behavior of hydrogels remarkable affected by environmental conditions, where the maximum swelling ratio of hydrogel (SR 560%) was obtained at pH 9, drying temperature 40oC in desiccator; and electrolyte concentration (NaCl) of 25% w/v. Topic: Science and Technology 353 Antioxidant and Antihemolysis Activity of Red Ginger Rhizome Extract (Zingiber officinale var. Rubrum)Didik Priyandoko1, Ratih Ajeng1, Hernawati1 Study Program of Biology, Department of Biology Education, UPI Abstract Red ginger as known as spicies herb and medicinal plant. In medicine sector, red ginger contains antioxidant compounds which is one is phenol. Phenol compounds in red ginger rhizome has the potential to prevents hemolysis and inhibits reactive oxygen species. This research were aimed to analyze antioxidant activity value and antihemolysis of red ginger rhizome extract. Completely Randomized Design were used with 5 treatments and 4 replications. In this study, extract of red ginger rhizome varians concentration is 80, 100, 120, 140 and 160 ppm. First experiments process were extraction use maceration method and ethanol 70% as a solvent. Total phenol content of red ginger rhizome extract were determined using folin ciocalteu method. Activity antioxidants were determined using 1-1 Diphenylpicylhydrizyl radical (DPPH) and parameters using IC50 (Inhibiton Concentration) value. Antihemolysis test using red blood cells were previously given stress peroxidative and then given by extract of red ginger rhizome with ratio 1:1. Absorbance value of red ginger rhizome extract were measure using spectrofotometer UV-Vis. The results of total phenol content of red ginger rhizome extract were 160 mg/100gr mass of sample and the antioxidant activity using DPPH method showed the IC50 of 68,4 ppm and classified into active/strong antioxidant. Meanwhile, antihemolysis test showed extract of red ginger rhizome can prevented hemolysis of 81% and there is a correlation between phenol & antioxidant and phenol & antihemolysis Topic: Science and Technology 354 Application Software Statistics Processing With VBA and Instructional Media Branching LinearRita Mariyana, Asep Deni Gustiana Universitas Pendidikan Indonesia Abstract This study aims to develop to improve the quality of learning by making statistical data processing tools are easy to understand, easy to use by following the flow and statistical methods so that students can quickly perform data processing in both subjects for task completion and the completion of an essay, a thesis or a dissertation. To describe the results of a study to improve the quality of learning with this statistical tool research uses descriptive method, the purposive sampling technique to students taking statistics courses in early childhood teacher education study program Indonesia University of Education. Data from the study, questionnaires, interviews, observation and documentary studies analyzed by quantitative and qualitative techniques. The final product of this study is to improve the quality of products tools of statistical data processing and statistical learning media courses are quickly understood and easily used not only for students taking a statistics course. Topic: Science and Technology 355 Cytotoxic Activity of Erypogein D from Erythrina poeppigiana (Leguminosae) Against Cervical cancer (Hela), breast cancer (MCF-7) and ovarian cancer (SKOV-3) cells.Tati Herlina1*, Shabarni Gaffar1, and Wahyu Widowati2 1Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran ,Jatinangor 45363, Indonesia 2Medical Research Center, Faculty of Medicine, Maranatha Christian University Abstract Cancer is the uncontrolled growth of abnormal cells and continues to divide rapidly in the body. Current anticancer treatment usually causes many side effects. Natural products are then explored to be new alternatives. Flavonoids have been known to possess medicinal properties, including anticancer. This study was performed to observe the cytotoxic activity of isoflavanone, erypogein D from Erythrina poeppigiana, toward cervical cancer (Hela), breast cancer (MCF-7) and ovarian cancer cell (SKOV-3) cells. The cytotoxic activity of erypogein D was tested using MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxyme-thoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. The percentage of cell mortality was calculated and the IC50 was analyzed using probit analysis. Cytotoxic activity of the erypogein D showed that SKOV-3 had the highest viability, followed by cervical cancer (Hela) and breast cancer (MCF-7) with value of IC50 170.74, 225, and 30.12 µM, respectively. Based on the value of IC50 erypogein D is the most selective to breast cancer MCF-7 cell. Therefore the cytotoxic activity of erypogein D is moderate activity Topic: Science and Technology 356 Application Artificial Neural Network for Green Consumer BehaviorY Deliana*, I- A Rum** *Department of Agribusiness, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor 45363, Indonesia ** Department of Economics, Faculty of Economics and Business, Universitas Padjadjaran, Jatinangor 45363, Indonesia Correspondent e-mail : y.deliana[at]gmail.com Abstract A machine learning approach based on the artificial neural network (ANN) is applied for the pattern recognition problem in social sciences. The proposed method provides a direct mapping from configuration green environment to consumer behavior. The algorithm used in training is Scaled Conjugate Gradient (SCG) with random data division and the performance is calculated using MSE. The benchmark conducted for the training phase of consumer behavior showed that only medium and high level of behavior that can well be recognized, indicate that environment have affirmative impact on green behavior. The correct classification on training can reach to 82%, with MSE=0.07 at epoch 11. It is shown that ANN can also capture the effect of attitude-behavior gap when properly trained, resulting in 71.6% correct for high level compared to 9.8% correct for medium level behavior (about 15.3% incorrect classification). The result of the study show that green environment affects to med-high level of green behavior. Topic: Science and Technology 357 Antioxidant and Antihemolysis Activity of Red Ginger Rhizome Extract (Zingiber officinale var. Rubrum)Didik Priyandoko1, Ratih Ajeng1, Hernawati1 Universitas Pendidikan Indonesia Abstract Red ginger as known as spicies herb and medicinal plant. In medicine sector, red ginger contains antioxidant compounds which is one is phenol. Phenol compounds in red ginger rhizome has the potential to prevents hemolysis and inhibits reactive oxygen species. This research were aimed to analyze antioxidant activity value and antihemolysis of red ginger rhizome extract. Completely Randomized Design were used with 5 treatments and 4 replications. In this study, extract of red ginger rhizome varians concentration is 80, 100, 120, 140 and 160 ppm. First experiments process were extraction use maceration method and ethanol 70% as a solvent. Total phenol content of red ginger rhizome extract were determined using folin ciocalteu method. Activity antioxidants were determined using 1-1 Diphenylpicylhydrizyl radical (DPPH) and parameters using IC50 (Inhibiton Concentration) value. Antihemolysis test using red blood cells were previously given stress peroxidative and then given by extract of red ginger rhizome with ratio 1:1. Absorbance value of red ginger rhizome extract were measure using spectrofotometer UV-Vis. The results of total phenol content of red ginger rhizome extract were 160 mg/100gr mass of sample and the antioxidant activity using DPPH method showed the IC50 of 68,4 ppm and classified into active/strong antioxidant. Meanwhile, antihemolysis test showed extract of red ginger rhizome can prevented hemolysis of 81% and there is a correlation between phenol & antioxidant and phenol & antihemolysis. Topic: Science and Technology 358 MODIFICATION ISOLATION OF BLACK CINCAU (Mesona palustris B.) BY TECHNICAL STEAM DISTILLATION TO INCREASE YIELD AND ANTIOXIDANT ACTIVITYHayat Sholihin, Asep Suryatna, Ali Fauzi Nurdin, Raafi. Study Program of Chemistry Indonesian Education University Abstract Black Cincau (Mesona palustris B.) is a tradtional drink in Indonesia which is cheap and easy to find out. It is reported that black cincau contains of antioxidant activity. However the yield and antioxidant activity is effected by the kind process, temperature, time. So it is needed to find out the optimum condition of isolation to increase yield and its activities. The yield of product was calculated based on the different weight of cincau leaves before and after extraction. While the presence of secondary metabolism was analysed by colour identifikation (Harbone), while antioxidant activity was calculated by DPPH methods. The isolation process was compared between boiled and steamed technique. The data showed that isolation based on boiled at temperature of 80oC for 45 minutes yielded of 14,86%, and antioxidant activity of 77,38%. While from the steamed distillation process at 80oC, for 45 minutes, at steam pressure of 0,8 kg/cm2 yielded 32,4%, and antioxidant activity of 94,23%. Based on the optimum condition results, it has been designed and modified the isolation tool based on technical steam distillation. The tool has increased the yield of 218% from 14,86% into 32,4%, and also increased an antioxidant activity of 121,7% from 77,38% into 94,23%. Topic: Science and Technology 359 Utilization of Primaclade Program to Isolate TRYP1 gene on Gurame Fish (Osphronemus gouramy)Diah Kusumawaty*, Angga Kly Sandy, Any Aryani, Departemen Pendidikan Biologi – FPMIPA Universitas Pendidikan Indonesia Abstract The Tyrosinase-Related Protein-1 (TYRP1) gene in gurame fish (Osphronemus gouramy) has been isolated for the first time. The TYRP1 gene plays a role in synthesizing melanin which is generally expressed in stressful conditions. Gene isolation was performed using two pairs of degenerate primers. The primer pair was designed using a TYRP1 gene sequence consensus from some fish from Teleosteis infraclass. Primer design is done by using the Primaclade program and Beacon Designer Free Edition which can be used online. Two pairs of primers are selected as the primers pair of outer-primer and inner-primer (nested). The primer outer is a primer used to amplify genomic DNA, to minimize nontarget amplicons, a second amplification is performed using an inner-primer pair. Single bands obtained from the amplification by using the inner-primer are directly sequenced at Macrogen. The result was obtained nucleotide size with 525 nt lengths consisting of 36 nt of intron region and 489 nt of exon region. Furthermore, the analysis was done to see the homology with the database of fish DNA molecule found in geneBank by using BLAST program. The homology results showed that the gene delicacy obtained from the carp had a similarity (Identity) of 76% with TYRP1 gene from Takifugu rubripes (AF397401.1). Topic: Science and Technology

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