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31	ABS-238	Chemistry
Flavonoids from the Stem Bark of Akway (Drymis beccariana Gibs) and Theirs Antimalarial Properties Tati Herlina1*), Tarso Rudiana 2), Euis Julaeha1), Anni Parubak3) 1)Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Sumedang, West Java, Indonesia 2)Program Study Chemistry, Faculty of Sciences and Pharmacy, Universitas Mathlaul Anwar, Jl. Raya Labuan KM 23, Pandeglang, Banten, Indonesia 3)Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negri Papua, Manokwari, West Papua, Indonesia Abstract Akway (Drimys beccariana, Gibbs) is a plant endemic to Papua highlands contained in Manokwari. D. beccariana is used for traditional malaria treatment in West Papua. The methanol extract of the stem bark of D. beccariana demonstrated significant antimalarial activity against Plasmodium falciparum parasites, in vitro. The methanol extract of D. beccariana was dissolved in water and partitioned between n-hexane and ethyl acetate. The ethyl acetate extract was separated through several column chromatography techniques on silica gel, resulting in three known compounds (1-3). The chemical structures of compounds 1-3 were identified based on spectroscopic data and on comparison with data previously reported and identified as 5,3-dihydroxy-7,4-dimethoxyflavone (1), 5,7- dihydroxy -4-methoxyflavone (2), and 5-hydroxy-7,3,4-trimethoxyflavone (3). Compounds 1-3 showed strong antimalarial activity against 3D7 strain of P. falciparum with IC50 values of 0.002, 0.005, and 0.001 mikro Molar, respectively. This result indicates that stem bark of D. beccariana is a promising source of antimalarial agents, and merits further investigation. Keywords: Akway, Drimys beccariana, Gibbs, flavonoid, Plasmodium falciparum, antimalarial PermaLink | Plain Format | Corresponding Author (Tati Herlina)

32	ABS-41	Chemistry Education
Development of 21st Century Skills through Science, Technology, Engineering, Art, and Mathematics (STEAM) in the Chemistry Learning of Electrolyte Non-Electrolyte Solutions Mega Ayu Agustin (a*), Yuli Rahmawati (a), Erdawati (a), Darsef Darwis (a) a) Chemistry Of Education, State University of Jakarta, Jl. Rawamangun Muka, Jakarta 13220, Indonesia *megaayuagustin.maa[at]gmail.com Abstract The paper portrays the integration of Science, Technology, Art, Engineering, and Mathematics (STEAM) education for developing the 21st century skills of year 10 students in learning of electrolyte non electrolyte solutions. The research employed qualitative research methods with multiple data instruments of interviews by referring to 21st Century skills instrument (Ravitz, 2014), observations, reflective journals. The program involved 36 students in year 10. The data were analysed based on the pattern theme found from the data source. The project involved the integration of STEAM in developing the building the miniature by using light from electrolyte solution source. The students used different range of fruits and solution that can produces an electrically conduction. The science fair were conducted in the school to provide the opportunity for students in presenting their STEAM project. The studys results showed that the students continuously developed 21st century skills of learning, life, ICT, and applied chemistry concepts in the project. The soft skills of collaboration, communication, critical and creative thingking skills have been developed during the project. The engaging environment encouraged the students to develop their skills and understanding the chemistry concepts. In addition to further research need to be conducted in-depth understanding of students 21st century skills. Keywords: STEAM, chemistry learning, electrolyte non electrolyte solutions, 21st century skills PermaLink | Plain Format | Corresponding Author (Mega Ayu Agustin)

33	ABS-306	Chemistry Education
Development of Students Submicroscopic Representation Ability on Molecular Geometry Material Using Augmented Reality Media Indah Wulandari (a), F S Irwansyah (a*), Ida Farida (a), M A Ramdhani (b) (a)Department of Chemical Education, UIN Sunan Gunung Djati Bandung, Jl. A.H Nasution No.105 Bandung 40614 Indonesia *ferli[at]uinsgd.ac.id (b)Department of Informatics, UIN Sunan Gunung Djati Bandung, Jl. A.H Nasution No.105 Bandung 40614 Indonesia Abstract The purpose of this research is to apply learning using Augmented Reality (AR) media to develop submicroscopic representation capability. The method used is a classroom study of fourth semester students of Chemical Education UIN Sunan Gunung Djati Bandung. Information gained by measuring student activity during learning, completion of students on the student worksheet, as well as the ability of submicroscopic representation after learning. The results obtained from the completion of the Student Worksheet are categorized very well (mean 86), the highest ability on the bonding domain and non-bonding domain indicator based on the Lewis structure (mean 94). In the results of submicroscopic representation ability tests after learning are categorized very well (mean 81.5), the highest ability in the determinant of bonding domains and non-bonded domains based on Lewis structure (mean 92). This is because students discuss and collaborate very well and supported by the use of media AR. Thus the media AR can be used as one of the media in developing student submicroscopic representation ability on molecular geometry material. Keywords: Augmented Reality; Multi-Representative; Geometry PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

34	ABS-327	Chemistry Education
First-Year University Students Understanding of Chemical Equilibrium Faizah Qurrata Aini (*), Zonalia Fitriza, Fauzana Gazali, Mawardi Chemistry Department, Faculty of Mathematics and Natural Science, Jalan Prof. Dr. Hamka 25171, Padang, Indonesia *faizah_qurrata[at]fmipa.unp.ac.id Abstract This study analyzed the understanding of first-year students on the concept of chemical equilibrium. It involved 30 first-year students in the faculty of mathematics and natural sciences of Universitas Negeri Padang. The students understanding was explored using a conceptual test. The result shows that generally, students have misconceptions about the concept of chemical equilibrium especially when the reaction reaches equilibrium as reported by many studies. The results of this study have implications for the lecturers in planning the general chemistry learning process, especially on the chemical equilibrium topic Keywords: chemical equilibrium, dynamic chemical equilibrium, students understanding PermaLink | Plain Format | Corresponding Author (Faizah Qurrata Aini)

35	ABS-82	Chemistry Education
Development of guided inquiry experiment student worksheet on the topic of acid and base grade XI to comprehend the concepts of chemistry Ghery Priscylio1,2 , Andromeda2, Mawardi3, Diana Rochintaniawati4 1Departemen Pendidikan IPA, Universitas Pendidikan Indonesia, Jl. Dr.Setia Budhi No. 229, Bandung 40154, Indonesia 2Departemen Pendidikan Kimia, Universitas Negeri Padang, Jl. Prof.Dr. Hamka Air Tawar Padang, Sumatera Barat, Indonesia 3Departemen Kimia, Universitas Negeri Padang, Jl. Prof.Dr. Hamka Air Tawar Padang, Sumatera Barat, Indonesia 4International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract Chemistry is an experimental science. The learning process in the Laboratory can help students to learn in understanding the chemical concepts, prove various concepts and doing simple research. Acid and Base is one of the topics of chemistry that require experiment in the learning process. The Types of student worksheet available has not yet guide students to to comprehend the concepts of chemistry. This research aims to generate guided inquiry experiment student worksheet on the topic acid and base grade XI to find the concepts of chemistry valid and practical. This development research using stages of 4-D model i.e define, design, develop, and disseminate. Instruments of data collection used is validation sheet and practicality questionnaire. The developed experiment student worksheet was validated by five expert and Practicality test by 26 students in grade XI. The data obtained were analyzed using Kappa Cohen Formula. The data obtained were analyzed by using Cohen Kappa Formula. The validity test of the developed experiment student worksheet is in high validity categories. The practicality test of students about developed experiment student worksheet indicated a very high category. While the teacher practicality about developed student worksheet obtain a very high practicality category.This finding also suggests that the developed experiment student worksheet can help students to learn find the concepts of chemistry. In conclusion, the worksheet can be used in chemistry learning process in laboratory (experiment acid and base). Keywords: Experiment Student Worksheet, Guided Inquiry, Acid - Base, 4-D Models PermaLink | Plain Format | Corresponding Author (Ghery Priscylio)

36	ABS-339	Chemistry Education
Development of three-tier test to diagnostic students misconception on chemical equilibrium Wiwi Siswaningsih Departemen Pendidikan Kimia, FPMIPA UPI. Abstract The aim of this study was to develop the three-tier multiple choice diagnostic test that was conform with criteria of content validity and reliability to identification students misconception about chemical equilibrium. The method of this study was development and validation methods. Test was developed in the form of three tier, the first tier Consist of three possible answers, the second tier Consist of six possible reasons and the third tier Consist of two certainty of respons index. Fourteen items was developed in this study. Based on the value of content validity ratio (CVR), all items were valid. The value of reliability of items were developed is 0.759, it means that items were acceptable. The respondents of this study were 5 validators who are lecturers from Departement of Chemistry Education and 35 senior high school students who was learned subject chemical equilibrium. Based on analysis of students answer were based on a determination key could be found students misconceptions that on dynamic equilibrium, concentration of reactant and product are same as common misconception in the student (57.1%). Keywords: chemical equilibrium, misconception, multiple choice and three tier diagnostic test. PermaLink | Plain Format | Corresponding Author (Siswaningsih Wiwi)

37	ABS-98	Chemistry Education
Cognitive Structure of Students on Acid-Base Concepts through Learning Cycle 8E Approach Sylvia Faustine(a*) , Yuli Rahmawati(b), Ahmad Ridwan(c), Irma Ratna Kartika(d) Universitas Negeri Jakarta Rawamangun Muka Street, Jakarta, Indonesia *sylviafstn[at]gmail.com Abstract This study aims to analyze the cognitive structure of students in year 11 SMAN 89 Jakarta on acid-base concepts, through Learning Cycle 8E approach. The cognitive structure represents the understanding of students of the concepts and their thinking process. The Learning Cycle 8E consists of engage, explore, e-search, elaborate, exchange, extend, evaluate, and explain. The research employed qualitative approached with the free word association test, interview, and observation. In this study, acid-base concepts were divided into the characteristics, indicator, and acid-base strength. The cognitive structure has been explored by using free word association tests in the stage of exploring, elaborate, extend, and explain phases. Then the concept mapping stage has been used at the end of the lesson. The data analysis of data reduction, presentation, and verification has been conducted to portray cognitive structure of students. The findings indicated that students have developed their conceptual understanding in each stage of the Learning Cycle 8E. Keywords and sentences of acid-base concepts have been developed by students based on previous experience and new understanding. Learning Cycle 8E model has an impact on the development of cognitive structure which represented understanding of students. In addition, learning cycle 8E cycle can decrease the percentage of misconception on the concept of an indicator and acid-base strength. Therefore, chemistry teachers can employ this Learning Cycle 8E to develop students conceptual understanding and overcome misconceptions on students. Keywords: chemistry learning; acid-base; learning cycle 8E; cognitive structure PermaLink | Plain Format | Corresponding Author (Sylvia Faustine)

38	ABS-99	Chemistry Education
The Effect of 5E-Learning Cycle Model Using Animation Media on The Learning Activity and Learning Outcomes of Students in Senior High School Class XI on Salt Hydrolysis Material Muhammad Iqbal (a*), Retno Dwi Suyanti (a), Indra Lasmana Tarigan (b) a) Chemistry Education, State University of Medan Jl. Willem Iskandar Pasar V, Percut Sei Tuan, Kabupaten Deli Serdang, Sumatera Utara 20371, Indonesia *iqbalrap12[at]gmail.com b) Health Analyst Study Program, Sekolah Tinggi Ilmu Kesehatan Karya Putra Bangsa Jl. Tulungagung-Blitar KM4, Tulungagung, Jawa Timur 66291, Indonesia Abstract The aim of this study is to determine the effect of learning model 5E learning cycle on learning activities and student learning outcomes on salt hydrolysis material. The research was conducted at Senior High School (SMA) Negeri 10 Medan. This research used research design of Pretest-posttest control group design. The sample was taken by purposive sampling technique and the obtained sample consist of 2 class which is: XI IPA 2 as an experimental class and XI IPA I as a control class. In the experimental class was taught used learning model 5E learning cycle using animation media and in control, class was taught using direct instruction model using animation media. The research instrument used the objective test in form of multiple choice questions as many as 25 questions, which previously passed through validation test, difficulty test, the test of different power, and reliability test with reliability value 0,91. Data analysis in this study used parametric inferential statistical analysis method, which the pretest and normalized score data had to pass normality and homogeneity test. X2count the pretest and gain score in the two study classes is greater than X2table and F-count the pretest and gain score in both the research class is greater than F-table. The research hypothesis was tested using statistical right-tailed t-test. Based on the calculation of t-statistical using right-tailed t-test obtained t-count results 4.29 and t-table at the 0.05 significance level 1.99. Furthermore, by t-count> t-table implied that the results of this study indicate there is influence of learning model of learning cycle 5E using animation media to the student learning outcomes in SMA of class XI on salt hydrolysis and student learning activity taught by learning model 5E learning cycle using animation media equal to 64,88%, higher than the student learning activity taught by direct instruction model using animation media that is equal to 55,72%. Keywords: 5E-Learning Cycle; Animation Media; Learning Activity; Learning Outcomes; PermaLink | Plain Format | Corresponding Author (Muhammad Iqbal)

39	ABS-111	Chemistry Education
Effect of Didactical Dialogue to Enhance Learning Quality Wiwik Kartika Sari (a*), Sumar Hendayana (a), Asep Supriatna (a), Susy Lestiyani (b) a) Universitas Pendidikan Indonesia Jalan Setiabudi No 229, Bandung 40154, Indonesia *wiwie44[at]gmail.com b) SMA Laboratorium Percontohan UPI Jalan Setiabudi No 229, Bandung 40154, Indonesia Abstract One of the factors that determine the learning quality is the relationship that exists during the learning process. That relationship is the didactical dialogue and collaboration that occurs among students. Didactical dialogue and collaboration will happen when classroom interaction between teachers and students can critically interrogate the topic of lesson, express and listen to multiple voices and points of view, and create respectful and equitable classroom relations. The purpose of this study is to analyze and describe didactical dialogue that occurs among students and collaboration among students in sharing task and jumping task activity during learning process. Sample was collected in one of private senior high school in Bandung, Indonesia. Data was taken from the topic of factors affecting reaction rate. The lesson was videotaped and transcribed. From the transcript results, the student dialogue is analyzed which section shows the didactical dialogue and the collaboration among students in sharing task and jumping task activities. Through this study, the deepness and spaciousness of students thinking was influenced by teachers capability to conduct the lesson, for instance how to elicit students idea by using question, how to give feedback from the response and how challenging the task designed by teacher. Didactical dialogue and collaboration among students show that quality learning process. Keywords: Collaboration; Didactical dialogue; Learning quality PermaLink | Plain Format | Corresponding Author (Wiwik Kartika Sari)

40	ABS-125	Chemistry Education
Investigate Higher Order Thinking Skills of Chemistry Education Students through Titrimetric in Real Context Learning Johnsen Harta (a*) a) Chemistry Education Study Program, Department of Mathematics and Science Education, Faculty of Teachers Training and Education, Sanata Dharma University, Yogyakarta, Indonesia *johnsenharta[at]usd.ac.id Abstract Chemistry learning in this 21st century has introduced many new breakthroughs in education. One of them is to develop higher order thinking skills (HOTS) of students so as to produce great graduate quality to build the nations future. The alternative that can be offered is real context learning that seeks to link and improve relationship between chemistry and chemicals in the environment. This research aims to investigate HOTS of students at Chemistry Education, Sanata Dharma University, Yogyakarta through real context learning that is focused on titrimetric. This research is descriptive research with 36 students of 2nd semester as research subjects who took the course of Fundamentals of Analytical Chemistry. The research instruments used were observation sheet, HOTS assessment sheet, and reflection sheet. The data collected were analyzed qualitative descriptive. The results show that the average percentage of learning implementation can reach 100%. Students are also enthusiastic during the learning. The average of ability of students in analyzing reach 88%, achievement of evaluation ability up to 90%, and the final result in the level of creation can gain 90%. Overall, the average ability of students in analyzing, evaluating, and creating are good. Keywords: Chemistry, HOTS, real context learning, titrimetric PermaLink | Plain Format | Corresponding Author (Johnsen Harta)

41	ABS-128	Chemistry Education
Strength Student Environmental Literacy Through Education With Popular Low Carbon Teaching Materials M.Syahruddin Amin, Anna Permanasari, Agus Setiabudi Prodi Pendidikan IPA S3 SPs UPI Abstract Education, especially science education should be able to make the students better understand and be sensitive to the environment. Nowadays, earth is affected by the greenhouse effect and global warming, which is caused by greenhouse gas emissions, especially CO2. Instill the awareness and sensitivity (environmental literacy) about the environment is very important to do. Education is the best way to grow and develop environmental literacy among the younger generation. The educational component that is very easy to be used as a means is a teaching material in the form of popular low carbon teaching materials.This qualitative study, library research, aims to provide a formulation of the social context associated with a reduction in CO2 emissions and its scientific explanation, as well as describe the pattern of presentation of these substances in the popular teaching materials. Popular low carbon teaching materials become a vehicle that raises the whole substance relating to CO2 emission reduction efforts. Substance in these materials taken from the contexts of everyday life, for example the CO2 emissions of various types of lamp, CO2 emissions in the type of fuel, CO2 emissions in the type of energy (LPG-LNG-Biogas), until the CO2 emissions from cigarette that burned. These contexts are given its scientific explanation (including calculations) but are presented in a simple-structured in the popular low carbon materials thus substantially easier to grasp. The presentation is also accompanied by analysis, stimulation of high order thinking skills, activities, and personal-contextual analysis Keywords: low carbon education, environmental literacy, popular low carbon teaching material PermaLink | Plain Format | Corresponding Author (Muhammad Syahruddin Amin)

42	ABS-387	Chemistry Education
CORRELATION BETWEEN THE ASSESSMENT SCORE BY THE TEACHERS AND PEER AS OBSERVERS ABOUT STUDENTS LABORATORY SKILLS IN ENTHALPY CHANGE (∆H) LABORATORY ACTIVITY Nahadi1, Wiwi Siswaningsih2, and Hadi Abdul Fatah3 Departement of Chemical Education, FPMIPA UPI Abstract The aim of this research is to analyze the performance assessment instrument in terms of correlation between the assessment score by the teachers and peer as observers. The instrument that has been analyzed is a performance assessment about students laboratory skills in enthalpy change (∆H) laboratory activity. The method used in the research was Validation. The instrument was tested by 8 teachers and 32 of year XI from one of senior high school in Bandung. The result shows that there is a similarity of the score given by students and the score given by the teacher. This similarity is proven by the pearson correlation score which reach >0,75-0,99 have been categorized as very good. This result implies that performance assessment can be administered by peers using this instrument which will provide the similar result by the teachers Keywords: Correlation pearson, Performance Assessment, Validity, Peer Assesment. PermaLink | Plain Format | Corresponding Author (Nahadi Nahadi)

43	ABS-133	Chemistry Education
Analysis of Students Difficulties based on Respondents Ability Test on the Topic of Geometry Molecules Melinda Nugraha (a*), Asep Supriatna (a) and Soja Siti Fatimah (a) a) Departemen Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia * melindanugraha[at]student.upi.edu Abstract In this research, the comprehension levels and students difficulties on the subject of molecular geometry were determined via respondents ability test. This test consist of five items designed specifically to detect what the students think. One problem has several options, each of which has an indicator of learning difficulty so that when the student selects one of these options, the researcher can immediately detect the difficulties that the student has. The students answer comes with a reason to avoid guess answers. The test was applied on 52 students of grade X. Analysis of test results using descriptive qualitative analysis. According to the findings obtained from the test, the students had numerous difficulties. It was found there are 7 kinds difficulties in geometry molecules material. The top three difficulties experienced by students are (1) 71% of students do not understand the meaning of the symbol of lewis where students describe in the form of covalent bonds; (2) 65% of students do not understand the influence of free electron pairs at geometry molecules; 31% of students do not understand the various types of geometry molecules when given the problem of placing between the name and geometry of the molecules. These results shown that students still do not understand the basic concept of geometry molecules, so that it is required further investigation to find out how to overcome student learning difficulties on the topic of geometry molecules. Keywords: students difficulties, respondents ability test, geometry molecules PermaLink | Plain Format | Corresponding Author (Melinda Nugraha)

44	ABS-135	Chemistry Education
The Use of molecular visualization and chemistry computation software based on open source to enhance the skill of predicting stabilization of conformation structure M. Setyarini (a*), Liliasari (b*), Asep Kadarohman(b8), Muhamad A. Martoprawiro(c*) (a*)Program Studi Pendidikan Kimia-Universitas Lampung Indonesia (b*)Program Studi Pendidikan IPA-Sekolah Pascasarjana-Universitas Pendidikan Indonesia, Indonesia (c*)Departemen Kimia-Institut Teknologi Bandung, Indonesia Abstract The depth thinking of atoms position in space and its relations to molecule stabilization is very important for student teacher. But in stereochemistry lecture, in general the molecule is represented as static picture, accompanied by data resourced from textbook. In explaining of stabilization conformation structure, it has not supported by data which resourced from result of student invention experience through practicum. This study aim to explain the result of practicum activity in determining conformers energy by using 3D molecular visualization software and computational chemistry software, both are based on open source. The subject of study are 30 students of LPTK in Lampung. The instrument of practicum assessment are in the form of practicum result, pretest and posttest, and questionnaire of students response toward practicum. The result of study show that practicum which is consist of 2 @ 120 minutes, is effective to train student to build 3D molecular structure skilfully, to format file input in order to obtain molecule energy data, and to visualize data output. Data of molecule energy help student to predict conformers stabilization skilfully. Keywords: molecular visualization software, chemistry computation Software, open-source, conformation, stabilization PermaLink | Plain Format | Corresponding Author (M. Setyarini)

45	ABS-142	Chemistry Education
A Correlation Study among the ability for designing Content Representation, self-efficacy, the understanding of Curriculum and Context-based chemistry learning of Pre-service Teacher Antuni Wiyarsi, Hari Sutrisno, Eli Rohaeti Universitas Negeri Yogyakarta Abstract Keywords: Chemistry Learning, Context-Based Learning. Curriculum Understanding, Content Representation, Pedagogical Content Knowledge PermaLink | Plain Format | Corresponding Author (Antuni Wiyarsi)

46	ABS-181	Chemistry Education
Utilization of Learning Analytic on Measuring Student Participation in Online Learning Sandra Sukmaning Adji (sandra@ecampus.ut.ac.id) Sri Hamda (srihamda@ecampus.ut.ac.id) Universitas Terbuka Abstract Learning analytics can be used to measure the level of student participation in online learning. This study is the best practice in conducting student learning assistance services through online learning, and aims to analyze student involvement during the learning process. The study was conducted on subjects offered by the Open University Chemistry Education course. The data were obtained based on the activity of online learning for one semester conducted by tutors and each tutor holding 1 class. The results obtained show that through learning analytic many items that can be assessed by the tutor on student activities during the online learning take place, among which are: 1) the number of overview accesses by the students on each topic or the reading of the tutorial material 2) the number of access made by each student on tutorial material 3) number of student access in reading each discussion material in discussion forum and, 4) number of response given / uploaded by every student in discussion forum. Other information that can be gained through the use of learning analytics is the interaction of learning that occurs between students with students and students with tutors. Interaction patterns are illustrated through graphs and responses among students. Keywords: Online learning, Learning analytic, Student participation, Interaction pattern PermaLink | Plain Format | Corresponding Author (Sandra Sukmaning Adji)

47	ABS-200	Chemistry Education
Effectiveness of HPLC Simulator in practicing students analytical thinking skills I K Yulina(1,2), A Permanasari(1), H Hernani(1), and W Setiawan(1) (1) Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 20 Bandung (2) Universitas Muhammadiyah Cirebon, Jl. Fatahillah, Watu Belah Cirebon Abstract HPLC Simulator is a learning application that can be used to facilitate students in understanding system and how to work HPLC instrumentation systematically. This application can be used all over Windows which has 32 bit operating system. The purpose of this research is to know how effective the use of HPLC Simulator in practicing students analytical thinking skills. Instruments in this study used test and non test instruments in the form of student satisfaction questionnaire. The results show that the use of HPLC simulators academically assist students in understanding the system and workings of HPLC but has not trained students in analytical thinking. Keywords: HPLC Simulator, Analytical Thinking PermaLink | Plain Format | Corresponding Author (Indah Karina Yulina)

48	ABS-236	Chemistry Education
Application of Corrosion E-module To Improve High-order Thinking Skills CZ Subarkah (a*), R Aisyah (a), A Nurhayati (a), AY Nuryantini (b) a) Chemistry Education, UIN Sunan Gunung Djati Bandung, Jl. A.H. Nasution No. 105, Bandung 40614, Indonesia *)E-mail: zenabsc[at]uinsgd.ac.id b) Physics Education, UIN Sunan Gunung Djati Bandung, Jl. A.H. Nasution No. 105, Bandung 40614, Indonesia Abstract Improving media in learning process could be used as an alternative attempt to improve high-order thinking skills. In this research, we have succeeded in applying e-module of corrosion in order to improve students high-order thinking skills. The research used pre-experiment method with one-group pretest and posttest research designs. The research used one class experiment without a comparison class. The research subject was 38 students of second semester Chemistry Education. Categories of each students high-order thinking skill improvement were determined using n-gain formula. The n-gain value of students analysis skill is 0.639, categorized as a medium improvement. The n-gain value of students evaluation skill is 0.543, categorized as a medium improvement. And, the n-gain value of students synthesis skill is 0.73, categorized as a high improvement. The overall n-gain value of high-order thinking skill is 0.637, which is categorized as a medium improvement. The result showed that e-module contributed to activate a learning process that resulted improvements of high-order thinking skills. Keywords: high-order thinking, e-module, corrosion, analyze, evaluate, create. PermaLink | Plain Format | Corresponding Author (Cucu Zenab Subarkah)

49	ABS-243	Chemistry Education
The Analysis of Students Scientific Skill During Chemical Equilibrium Practice Sari Sari, Oban Sobandi and Adam Malik Universitas Islam Negeri Sunan Gunung Djati Bandung Abstract Keywords: Performance Assessment instrument, Chemical Equilibrium practice PermaLink | Plain Format | Corresponding Author (Sari Sari)

50	ABS-260	Computer Science
ANALYSIS OF ONLINE MARKET SYSTEM DESIGN STRATEGY BASED ON EXTERNAL AND INTERNAL FACTOR EVALUATION MATRIX Alusyanti Primawati*, Aulia Paramita, Lukman, Itsar Bolo Rangka Universitas Indraprasta PGRI, Jalan Raya Tengah No. 80, Jakarta Timur 13760, Indonesia. *alus.unindra23[at]gmail.com Abstract The development of e-commerce or e-Market technology today creates a culture of Smartphone usage as the main media in communicating and doing business so it makes the opportunity to be utilized in overcoming every conventional issues in doing business. One of the issues in Pasar Tanah Abang is the congestion due to the large number of visitors coming from outside Jakarta. Therefore, a proper market development strategy is needed. The method used in this research was SWOT (Strengths, Weaknesses, Opportunities & Threats). The strategy is composed of the calculations described in the EFE (External Factor Evaluation) and IFE Matrix (Internal Factor Evaluation). The results obtained from this research explain that the strategy of market development by designing the Online Market application is legally specific for the official seller in Pasar Tanah Abang is one of the right strategy in overcoming the issues in Pasar Tanah Abang. Furthermore, the design of Online Market System application for PasarTanah Abang (Blok F) produced in this research is part of the implementation of market development strategy. Keywords: SWOT Analysis, Matrix EFE, Matrix IFE, Online Market System, Pasar Tanah Abang PermaLink | Plain Format | Corresponding Author (Alusyanti Primawati)

51	ABS-266	Computer Science
Spatial Open Datasources Utilization in Spatial Data Management for Rural Development Planning Wawan Hendriawan Nur*, Yuliana Susilowati, Yugo Kumoro, Dedi Mulyadi Research Center for Geotechnology - Indonesian Institute of Sciences Komplek LIPI Bandung, Gd. 70 Puslit Geoteknologi, Cisitu, Bandung, 40135 *wawanhn[at]gmail.com Abstract The availability of spatial open datasources is increasing in line with the development of open data. Google Earth, Openstreet Map as a provider of high resolution satellite data that is opensource can actually be utilized in a way to support the development planning and data management of spatial information of a region. With the existence of regional autonomy that has reached to the village level, then Village should independently have the spatial information related to various resources in development planning independently. This paper discusses the method of using Google Earth open source data for spatial data management of regional resources to increase the potential of villages so that be able to independently manage their resources. The research location was conducted in Cibodas village, sub district of Lembang, West Bandung regency. From the spatial data interpretation Google earth, Openstreet Map can mapped in detail for settlements, land use, transportation network, river network, and potential hazard. Then data processed by GIS technology to increase the value of information by integrating social data, economics, education. The resulting spatial information is very useful for Cibodas Village, Sub district of Lembang in the planning and management of development independently. Keywords: GIS; Google Earth; Openstreet Map; Spatial Data; Spatial Open Datasources PermaLink | Plain Format | Corresponding Author (Wawan Hendriawan Nur)

52	ABS-271	Computer Science
DESIGN A HEALTHY INTERNET IN SEARCH ENGINE OPTIMIZATION FOR INDONESIA Yunita Nurjanah, Cahyo Prianto, Nisa Hanum Harani Politeknik Pos Indonesia Abstract The Internet is a warehouse of information searched by search engines. Search Engines require a database of 100 billion web pages to become a warehouse of information. Therefore, the internet is increasingly relying on search engines as search engine optimization. Search Engine Optimization (SEO) is internet-based marketing that uses white-hat methods. Search engines are used to search for various information. However the existing search engines have not been able to filter the information in the form of harmful content that makes some people worry about the information contained on the Internet. Therefore, a search engine is created which can reduce negative content by implementing crawler and scrap methods and genetic algorithms. The result of this research is to produce a search engine that can filter negative content so that it can be used safely by everyone Keywords: Genetic Algorithm, Crawler, Internet, Scrap, SEO PermaLink | Plain Format | Corresponding Author (Cahyo Prianto)

53	ABS-19	Computer Science
Spatial Open Datasource Utilization in Rural Development Planning and Data Spatial Management Wawan Hendriawan Nur, Dedi Mulyadi, Yuliana Susilowati, Yugo Kumoro Research Center for Geotechnology, Indonesian Institute of Sciences Komplek LIPI Bandung, Gd. 70 Puslit Geoteknologi, Cisitu, Bandung, 40135 Abstract The availability of spatial open datasource is increasing in line with the development of open data. Google Earth as a provider of high resolution satellite data that is opensource can actually be utilized in a way to support the development planning and data management of spatial information of a region. With the existence of regional autonomy that has reached to the village level, then Village should independently have the spatial information related to various resources in development planning independently. This paper discusses the method of using Google Earth open source data for spatial data management of regional resources to increase the potential of villages so that be able to independently manage their resources. The research location was conducted in Cibodas village, sub district of Lembang, West Bandung regency. From the spatial data interpretation Google earth can be mapped in detail for settlements, land use, transportation network, river network, and potential hazard. Then data processed by GIS technology to increase the value of information by integrating social data, economics, education. The resulting spatial information is very useful for Cibodas Village, Sub district of Lembang in the planning and management of development independently. Keywords: GIS, Google Earth, Spatial Data, Spatial Open Datasources PermaLink | Plain Format | Corresponding Author (Wawan Hendriawan Nur)

54	ABS-278	Computer Science
Dijkstra Algorithm for Nearest Route Determination and Estimated Cost of Official Travel M Irfan*, F Muzaki, C N Alam, P Dauni, M A Ramdhani, A Rahman Department of Informatics, UIN Sunan Gunung Djati Bandung *irfan.bahaf[at]uinsgd.ac.id Abstract The purpose of this Decision Support System (DSS) design is to analyze the nearest route of a position, which then carried out financing analysis for transportation to the specified location. The design methodology of this study is the Android-based application system by utilizing the mapping of the region on the hardware in the form of a smartphone. The analysis model chosen for this DSS is Dijkstra algorithm. The subject of system user is Coordinator of Islamic Higher Education (KOPERTAIS) region II for West Java and Banten. The design results show the good system capabilities of the system to select and determine the nearest route and estimate the cost of official travel so that official travel can be efficiently done based on the time and cost perspective. Keywords: Android, Decision Support System, Dijkstra Algorithm, Nearby routes, Travel Expense Estimates PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

55	ABS-279	Computer Science
Decision Support System Design of Higher Education Scholarship Recipients with Android-Based M Irfan*, R S Adipradana, B Subaeki, C N Alam, M A Ramdhani, B A Muhammad Department of Informatics, UIN Sunan Gunung Djati Bandung *irfan.bahaf[at]uinsgd.ac.id Abstract The purpose of this study is to present the design of Decision Support System (DSS) to analyze the college scholarship recipients on the android-based. The design methodology for selecting scholarship recipients is used Fuzzy Multiple Attribute Decision Making (Fuzzy MADM). Fuzzy MADM is an algorithm that used to find the optimal result of a number of alternatives with certain criteria. This method is chosen because the calculation of this method uses multiplication to correlate the attribute rating and only yields the largest value that will be selected as an alternative scholarship recipient. The object set in this research is UIN Sunan Gunung Djati Bandung student. The design system is made based on android with hardware in the form of smart phone. The design results have a level of compliance with regulatory standards that have been established. The results also indicate the logical and appropriate target selection mechanism for scholarship recipients for the most eligible students who receivede scholarship assistance. Keywords: Information System, Scholarship, Weighted Product Method PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

56	ABS-281	Computer Science
Web-Based Design for Lecturer Performance Reporting Applications M Irfan*, R Saprudin, C N Alam, D R Ramdania, M A Ramdhani, D Yusli Department of Informatics, UIN Sunan Gunung Djati Bandung *irfan.bahaf[at]uinsgd.ac.id Abstract A lecturer as an educator in a college institution obtains professional appreciation for their work through certification of lecturer who is rewarded in the form of lecturer allowance. To obtain a lecturer allowance, lecturers are required to report their academic activities. The purpose of this study is to describe the design of web-based lecturer performance reporting applications. In this study the application is modeled with UML modeling (Unified Modeling Language) that describes a system design. The object of research that used as a user of the application is a lecturer of Private Islamic Higher Education. The results of application design show that the system can work well, can process data of lecturer activities among others: education, research, community service, and supporting which then converted to semester unit value (SKS). This lecture performance reporting application is user friendly, easy access, good system security, and have a good data base. Keywords: College, Higher Education, Lecturer, Performance, Report PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

57	ABS-282	Computer Science
Android-based Expert System Design for Drug Selection using Certainty Factor C Slamet(*a), B Firmanda DA (a), M A Ramdhani(a), W Darmalaksana(b), A S Enjang (c), D Yusli (a), Faiz Muqorrir Kaffah (a) (a) Department of Informatics, UIN Sunan Gunung Djati Bandung, Indonesia (b)Department of Hadits Science, UIN Sunan Gunung Djati Bandung, Indonesia (c)Department of Journalistic and Public Relations, UIN Sunan Gunung Djati Bandung, Indonesia *cepy_lucky[at]uinsgd.ac.id Abstract Handling some types of diseases require medical therapy in the form of drug delivery. Appropriate medication should be conducted with assistance from medical experts for doses and types of drugs can be given properly and correctly. This study aims to discuss drug selection system design using certain certainty factor method with android-based. The disease that used as a discussion object is diabetes mellitus disease. System design methodology uses UML (Unified Modeling Language) modeling approach. The design results show that the system can make an early diagnosis of diabetes mellitus type II and drug selection recommendation for diabetes mellitus type II. Since health is essential to the safety of the human psyche, this application system can only be used as the third opinion of the diagnosis of diabetes mellitus type II. Keywords: Certainty Factor, Diabetes Mellitus, Expert System, Medicine PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

58	ABS-283	Computer Science
Decision Support System Design for Determining Brown Sugar Quality with Weighted Product Method I Taufik, A Saleh, C Slamet*, D S Maylawati, M A Ramdhani, B A Muhammad Department of Informatics, UIN Sunan Gunung Djati Bandung *cepy_lucky[at]uinsgd.ac.id Abstract Brown sugar is the result of processing the coconut juice with a distinctive taste, so that its use cannot be replaced by other types of sugar. The purpose of this research is to design of Decision Support System (DSS) using a Multi Attribute Decision Making (MADM) model by applying Weighted Product (WP) method to determine the quality of brown sugar. WP method was chosen because the problem in this research is a ranking problem. The WP method is able to select the best alternative from a number of alternatives and its superiority in weighting technique. This system is designed by using Php and MySql as the database programming language. This system can rank the brown sugar by calculating the criteria weight. The weight value is searched for each attribute, then conduct the ranking process to determine the optimal alternative, which is the best brown sugar and decent in terms of ranking. Based on the tests performed, a system capable to produce the best ranking in accordance with the calculations used, so that the system this can be speed up the selection of red sugar. Keywords: Multi Attribute Decision Making, Ranking, Weighted Product PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

59	ABS-284	Computer Science
K-Means Algorithm for Mapping by Utilizing Google Maps Imagery Y A Gerhana*, A P Fuzilesmana, U Syarifuddin, A R Atmadja, M A Ramdhani Department of Informatics, UIN Sunan Gunung Djati Bandung *yanagerhana[at]uinsgd.ac.id Abstract In several cases, data mapping that is available today has not much done digitally yet. Too much data that is involved in data filling process causing a long mapping process. The purpose of this research is to design the system by implementing K-Means Clustering Algorithm for data mapping using Google Maps imagery. The object of system design in this research is the plantation area in Sukabumi Regency, Indonesia. The system design methodology that used is the UML (Unified Modeling Language) approach. Based on the results of system testing, K-Means Clustering algorithm can determine and cluster the plantation area with potency of commodity with three level, among others high level, medium level, and low level, which is further indicated by spatial data. Keywords: Cluster, Commodity, Google Maps, K-Means Clustering PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

60	ABS-286	Computer Science
Linear Congruent Method on Computer Based Test for New Student Admission W B Zulfikar*, A Fajar, A Wahana, D S Maylawati, M A Ramdhani Department of Informatics, UIN Sunan Gunung Djati Bandung *wildan.b[at]uinsgd.ac.id Abstract The new admissions examination is an early process in advanced education. Through the entrance examination, the school can select students with the best potential. The exam results can be used as a standard of candidate ability which can further be utilized as a determination of content, methods, and learning strategies. The purpose of this study is to design a system using Linear Congruent Method (LCM) algorithm on the Computer Based Test (CBT) for the new admissions exam. The system build using Waterfall software development life cycle method. The designation of the LCM algorithm is based on consideration of the conformity of the LCM algorithm to be used in the randomization of questions on CBT. The result of experiment shows the ability of LCM to rendomize the question and answer of new student admission test is running well, so that the exam process can avoid the cheating of examinees, and on the other hand the assessment can do objectively, quickly, and accurately. Keywords: Classification, Computer Based Test, Linear Congruent Method, Randomize PermaLink | Plain Format | Corresponding Author (Pusat Penelitian dan Penerbitan UIN Sunan Gunung Djati Bandung)

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