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121	Chemistry Education	ABS-206
Analysis of Students Science Process Skills during Covid-19 Pandemic Jihan Assyifa Fatihah (a*), Sri Mulyani (a*), Tuszie Widhiyanti (a), Wiji Wiji (a) Graduate Program of Chemistry Education, Department of Chemistry Education, Indonesia University of Education, Jl. Dr. Setiabudi No. 229, Bandung, Jawa Barat, 40154, Indonesia *fatihahjihanassyifa[at]gmail.com *srimulyani[at]upi.edu Abstract The main objective of this research is to analyze the Science Process Skills (SPS) of high school students majoring in science, especially during distance learning in the covid-19 pandemic in chemistry learning. Quantitative descriptive method was used to analyze students^ science process skills which were collected using 20 multiple choice questions, and interviews with chemistry teacher. This study involved 28 students class XI in one of senior high school in Bandung Barat city of West Java. The results showed that the average score of students science process skills was 74.46 and there were 35.71% of students having science process skills below the average. The percentage of each indicator were 85.71% (observing), 82.14% (measuring), 64.29% (classifying), 87.50% (predicting), 80.36% (communicating), 73.21% (associating), 72.62% (identifying variables), 79.46% (concluding), 57.14% (designing experiments), and 57.14% (formulating hypotheses). Based on these data, the students^ science process skills were in the low category on the indicators of classifying, designing experiments- the medium category on the indicators of associating, and identifying variables- and the others were in the high category. The interview showed that during distance learning, the chemistry learning process only used lecture method. The results of this analysis show that both before and after the COVID-19 pandemic, students^ science process skills did not develop optimally through learning using the traditional lecture method. So, that students^ science process skills still need to be developed. Keywords: Science process skills- chemistry learning Share Link | Plain Format | Corresponding Author (Jihan Assyifa Fatihah)

122	Chemistry Education	ABS-467
Augmented Reality Learning Media based on Tetrahedral Chemical Representation: A Needs Analysis Dwi Retno Sari, Sri Yamtinah, Sri Retno Dwi Ariani, Sulistyo Saputro, Elfi Susanti VH, and Ari Syahidul Shidiq Chemistry Education Study Program, Faculty of Teacher Training and Education, Sebelas Maret University, Jl. Ir. Sutami 36A Kentingan, Surakarta, 57126, Indonesia Abstract Teaching abstract chemistry concepts is a challenge for both chemistry teachers and students. One of the abstract and challenging topics for students to understand and be taught by teachers is the 3-dimensional visualization of molecular structures and sub-microscopic representations. Along with the development and accessibility of the latest computing technology, 3D representation and visualization can be done with digital simulations using Augmented Reality (AR) technology. Therefore, this study aims to analyze the needs of chemistry teachers and students regarding AR learning media based on tetrahedral chemical representation. This study was conducted on 15 chemistry teachers and 35 students in class XI in North Sumatera. The survey method with data collection techniques using online questionnaires distributed via google form was used in this study. The results of the questionnaire analysis show that teachers and students need learning media in the chemistry learning process that can visualize the abstract concept. This research implies that the development of learning media based on augmented reality based on chemical tetrahedral representation is needed to support the ongoing learning of chemistry in improving student learning outcomes Keywords: Augmented Reality, Tetrahedral Chemical Representation Share Link | Plain Format | Corresponding Author (Sri Yamtinah)

123	Chemistry Education	ABS-468
Diagnostic Study of Students^ Initial Knowledge as Retention in SN1 and SN2 Reaction Mechanism Lecture Rinaningsih, Asep Kadarohman Universitas Negeri Surabaya Universitas Pendidikan Indonesia Abstract The Sorogan-Bandongan Model is an individual lecture model at boarding schools in Indonesia. Before the implementation of the model in the lecture, a diagnosis of students^ initial knowledge should be carried out. Prerequisite concepts that are studied in order to understand SN1 and SN2 reaction mechanism are substitution reaction, nucleophilicity, Lewis acids and bases, electron configuration, orbital filling, hybridization and electronegativity. This study aims to determine whether the Sorogan-Bandongan model is effective to be employed as retention in SN1 and SN2 reaction mechanism lecture. The research method used is Mixed Method with Creswell^s Embedded Experimental Design model. The analysis of the pre test - post test data is qualitatively described. Then, quantitatively, some pre-test data of prerequisite concepts (substitution reaction, nucleophilicity, electron configuration, orbital filling, hybridization, electronegativity) are correlated with some post-test data of SN1 and SN2 reaction mechanism. Qualitatively, it is obtained increased average of 11.07 for mastery of concept. Quantitatively, it is obtained correlation data of 0.45 between the diagnostic test as pre-test with the post-test- reaction substitution with reaction mechanism 0,13- nucleophilicity with reaction mechanism 0.12- Lewis acids and bases with reaction mechanism 0.31- electron configuration with reaction mechanism 0.30- orbital filling with reaction mechanism -0.09- Hybridization with reaction mechanism 0.26- electronegativity with reaction mechanism 0.16. Based on the correlation result, it is found that orbital filling is not considered as prerequisite concept in studying SN1 and SN2 reaction mechanism. Keywords: diagnosis of initial knowledge, prerequisite concept, reaction mechanism, Sorogan-Bandongan model, individual lecture, retention. Share Link | Plain Format | Corresponding Author (Rinaningsih Rinaningsih)

124	Chemistry Education	ABS-473
A Context-based Chemistry Course: Integrating System Thinking into Teaching AAS Ari Syahidul Shidiq, Anna Permanasari, Hernani, and Sumar Hendayana Chemistry Education Study Program, Faculty of Teacher Training and Education, Sebelas Maret University, Jl. Ir. Sutami 36A Kentingan, Surakarta, 57126, Indonesia Abstract Systems thinking in chemistry education emphasizes the interdependence between components. In the context of chemistry, systems thinking not only considers reactions and processes, but students are also required to be able to consider where chemical materials/tools come from, how these materials/tools are used, and the impact of using chemical materials/tools on life. Spectrophotometry courses involving sophisticated analytical instruments such as AAS are often taught without involving the chemical context associated with everyday life. Therefore, this study intends to analyze students^ systems thinking in AAS lessons that involve the context of chemistry in everyday life. A qualitative research approach with a survey method using an open questionnaire was used in this study. This questionnaire is intended to reveal students^ attitudes towards systems thinking skills and their perceptions concerning the usefulness of using AAS in daily life. A total of 38 students participated as subjects in this study. This study indicates that students have good attitudes and perceptions about the usefulness of the context of using AAS. Attitudes and perceptions about the context of the usefulness of using AAS will make learning meaningful Keywords: System Thinking, Context-Based Course, AAS Share Link | Plain Format | Corresponding Author (Ari Syahidul Shidiq)

125	Chemistry Education	ABS-476
Lab Maya Boiling Point Elevation Experiment: Tool Design Reconstruction Nurhamida Anar (a*), Ijang Rohman (b**), and Liliasari (b***) Author Affiliations a) Chemistry Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudi No 229, Bandung 40154, Indonesia *nurhamidaanar[at]upi.edu b) Department of Chemistry Education, Universitas Pendidikan Indonesia, Bandung 40154, Indonesia **ijangrh[at]upi.edu ***liliasari[at]upi.edu Abstract The boiling point elevation experiment is one of the experimental simulations contained in the Maya Lab on the vlab.learning.kemdikbud.go.id site, which can be accessed by anyone freely. One of the main components in the construction of the test equipment used in the experimental simulation is an open beaker. This study aims to examine the construction of the tools used in the experimental simulation. The method in this study is to compare two test equipment constructions, using open beakers of various sizes (100ml, 150ml, and 200ml) with a two-neck flask connected to a different type of condenser (liebeg, vigreux, and graham). Based on experiments conducted on the construction of test equipment with an open beaker, it was found that there was a significant reduction in solvent volume. The average volume reductions were 21%, 25%, and 29%, respectively. This will cause a change in the concentration of the substance being tested so that the boiling point measurement is wrong. In the experiment using the construction of the second tool, an average volume reduction of 0-0.5% was found. A constant volume with a reduction of 0% is obtained by utilizing a graham condenser. The use of a flask connected to the condenser proved to be able to maintain the amount of solvent in the boiling point elevation experiment. The results of Mann Whitney test on the two test equipment constructions showed a significant difference between the two sets of test equipment. Keywords: Virtual laboratosy- Boiling poin elevation- Lab Maya Share Link | Plain Format | Corresponding Author (Nurhamida Anar)

126	Chemistry Education	ABS-489
Cultivating pre-service science teachers^ reasoning skills through an experiment on acid-base reaction enthalpy change Rika Rafikah Agustin, Enjun Junaeti Universitas Pendidikan Indonesia Abstract Acid and base are crucial science topics that relate to daily life contexts and other issues. Teaching acid and base through the experiment is believed to be able to develop various skills. Generally, researchers focus on developing psychomotor skills. This study captured pre-service science teachers^ reasoning skills by writing laboratory reports after joining an experiment concerning enthalpy change of sodium hydroxide and hydrochloric acid reaction. Twenty-three pre-service teachers participated in this study. A matrix was adapted to categorize the complexity of pre-service science teachers^ reasoning skills. The research finding reveals that 70% of participants^ reasoning skills are in a minor category. This finding implies the importance of inquiry features during the experiment. Keywords: reasoning skills, acid-base experiment, inquiry Share Link | Plain Format | Corresponding Author (Rika Rafikah Agustin)

127	Chemistry Education	ABS-236
The Effect of Covid-19 Pandemic on the A3 (Attention, Attitude and Awareness) indicators of Students in Learning Chemistry Lusia Narsia Amsad, Merlinda Yakob Lolopayung, Alex Agustinus Lepa Universitas Cenderawasih Abstract This study aimed to determine students attention, attitude, and awareness in learning Chemistry during the Pandemic Covid-19. Observation, interviews, questionnaires, and documentation were data collection techniques used in this study. The questionnaire instrument used in the form of a closed questionnaire which was compiled based on content validity and had been tested for reliability. The data from the research shown that students percentage for attention 55.97%, attitude 56.48%, and awareness 54.85%. It also found that factors that influence students during the Covid-19 pandemic are the level of intelligence, lecture^s creativity in teaching, having certain methods of observation and learning have certain conditions. good physical and health, and the teaching style of the lecturer who does not provide examples of problems in solving them. Keywords: Effect, Covid-19 Pandemic, A3 ( Attenttion, Attitude, and Awareness),Students Share Link | Plain Format | Corresponding Author (Lusia Narsia Amsad)

128	Chemistry Education	ABS-238
Development Of STREAM-Based Self-Study Module To Stimulate HOTS In Petroleum Teaching Materials Kuncoro Hadi(a*), Ira Mahartika(b), Arif Yasthophi(c) a.b.c)Chemistry Education, FTK UIN Suska Riau Jl. Subrantas, KM 13 Pekanbaru, Riau, Indonesia * kuncoro.hadi[at]uin-suska.ac.id Abstract This research is the development of a STREAM (Science, Technology, Religiosity, Engineering, Arts, and Mathematics)-based self-study module to stimulate HOTS (High Order Thinking Skills) in petroleum teaching materials. This research was conducted at MAN 3 Pekanbaru City for the development of the HOTS module and STREAM-based self-study, as well as to see the effectiveness of the module. This development research uses the 4D method. This research begins with literature study and observations of class XI MIPA students to see the material used and the learning process as well as to find out the obstacles in learning. The initial conditions provide ideas for making STREAM-based self-study modules which are expected to stimulate HOTS. The module was tested on a limited basis for class XI MIPA 3 online, to see its practicality. In completing the module, an expert feasibility test is carried out. The expert test showed that the STREAM-based learning module to stimulate HOTS was in the very appropriate category with an average score of 94.55%, for the very decent quality category with a value of 93.13%, for the learning quality category it was very feasible with a score of 94, 28%. , and 96.25% (very decent category) for technical quality (media). The very feasible category is 96.67% for student readability. The activity of using STREAM-based self-study modules to stimulate ^HOTs^ in class XI MIPA 4 achieved a score of up to 90%. The use of STREAM-based self-study modules to stimulate HOTS has proven to be effective and can be used in the learning process. Keywords: Module, self-study, STREAM, petroleum, HOTS Share Link | Plain Format | Corresponding Author (Kuncoro Hadi)

129	Chemistry Education	ABS-241
Development of Basic Chemistry II Teaching Materials Oriented to Chemical Literacy Sari Sari Chemistry Education Study Program, Mathematics and Natural Science Education Department, Tarbiyah and Teacher Training Faculty, Sunan Gunung Djati State Islamic University Bandung, Jl. AH Nasution No. 105, Bandung, 40614, Indonesia Abstract The purpose of this study was to describe the appearance of Basic Chemistry II Teaching Materials Oriented to Chemical Literacy. The methods used in this research were research and development, with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). Display of teaching materials included lecture rules, Materials for Electrolyte and Non-Electrolyte Solutions, Acid-base Equilibrium, Acidity Level of Solution, Solubility and Solubility Products, Voltaic Cells, Electrolysis and Colloids. Each chapter is equipped with experimental procedures, application of material in daily life and Islamic values. The results of the validation test conducted on four validators and declared valid, while the feasibility test was carried out on a limited basis to 31 students by obtaining an average percentage of 8 0.1 2 % indicating that this teaching material was very suitable to be used as Basic Chemistry II Teaching Materials Oriented to Chemical Literacy. Keywords: Teaching Materials, Basic Chemistry II, Chemical Literacy Share Link | Plain Format | Corresponding Author (Sari Sari)

130	Chemistry Education	ABS-244
Making Android Based Interactive E-Modules On Reaction Rate Material Integrated With Islamic Values Muhammad Salman Abdul Fatah, Cucu Zenab Subarkah, and Sari Sari Chemical Education Study Program, Department of Mathematics and Natural Sciences, Faculty of Tarbiyah and Teacher Training, Sunan Gunung Djati State Islamic University Bandung, Jl. AH Nasution No. 105, Bandung, 40614, Indonesia Abstract Abstract. The purpose of this study was to describe the appearance of android-based interactive e-module learning media on the reaction rate material integrated with Islamic values, analyze results of the validation test, and media feasibility. The research methods were Research and Development (RnD) with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The e-module display consisted of five main menus, namely introduction, material, discussion, quiz, and profile. The e-module presented materials on the reaction rate with pictures, animations, videos and Islamic values related to the concepts and factors that affect the reaction rate. Then the user must follow the discussion and complete the quiz to practice his understanding. Research data information could be seen in the profile menu. The results of the validation test obtained an average percentage value of 87.13 %. The results of the feasibility test obtained, Thus, this e-module was suitable for learning process. Keywords: Interactive E-module, Android, Reaction rate, Islamic values Share Link | Plain Format | Corresponding Author (Sari Sari)

131	Chemistry Education	ABS-248
Assesing Critical Thinking Skills in Chemistry Learning Quratul Aina, Nahadi, Harry Firman Universitas Pendidikan Indonesia Abstract One of the efforts to achieve optimal educational goals is the quality of the assessment instruments used. Assessment instruments must be able to measure students^ understanding of learning materials, one of which is to be able to measure students^ critical thinking skills. The development of science and technology has a positive impact, and the demands of today^s era must achieve 21st century learning goals. In order for students to be able to achieve 21st century skills, there must be relevant instruments to meet the needs of students^ thinking abilities. This study aims to describe the importance of developing an assessment instrument for students^ critical thinking skills in chemistry learning. The method used is a systematic literature review, namely by collecting journal articles that match the theme, then the journal articles are reviewed and arranged into several discussion sections. The result of the literature review that has been carried out is a design framework for critical thinking skills assessment instruments that are suitable for assessing students^ critical thinking skills in chemistry. The discussion includes an overview of the assessment instrument, critical thinking skills and how to develop an assessment instrument to measure students^ critical thinking skills on chemistry that meets the requirements on the characteristics of the assessment. Keywords: Asssessment, Critical Thinking, Chemistry Learning Share Link | Plain Format | Corresponding Author (Quratul Aina)

132	Chemistry Education	ABS-510
Development and Validation of a Virtual Test Based on Three Levels of Chemical Representation to Measure Student^s Concepts Mastery on Hydrolysis of Salt Dian Mayangsari (a*), Nahadi (a), Harry Firman (a) a) Department of Chemistry Education, Indonesia University of Education Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia *dianms[at]upi.edu Abstract This study aims to develop and validate virtual test based on three levels of chemical representation that can measure students^ conceptual mastery of the salt hydrolysis material. This study uses development and validation methods which consists of 4 phases: 1) Delineation of the purpose and the scope of the test- 2) Development (design) of the test- 3) Validation, selection of items and soring guidelines- 4) Assembly and evaluation of the test. The instruments used the content validation sheet, and student interview sheet. The participants were 11th grade Senior High School from 3 different schools in Karawang with 60 total of respondents. The results showed that the virtual test containing 36 multiple choice items were valid (with CVI value for macroscopic, submicroscopic and symbolic level items respectively are 0.91, 0.96 and 0.93), and reliable (with cronbach^s alpha value for macroscopic, submicroscopic and symbolic level items respectively are 0.600, 0.603 and 0.620). The results of this study can be used to measure student^s concepts mastery on hydrolysis of salt based on three level chemical representation. Keywords: Validation, Virtual Test, Chemical Representation, Concept Mastery, Salt Hydrolysis Share Link | Plain Format | Corresponding Author (Dian Mayangsari)

133	Computer Science	ABS-291
Designing and Manufacturing Virtual Museum Keris Nusantara based on Virtual Reality (VR) with Agile for VR (AVR) Methods Yudho Yudhanto, Fendi Aji Purnomo, Taufiqurrakhman Nur Hidayat, Nur Azizul Haqimi, Ovide Decroly Wisnu Ardhi, Eko Harry Pratisto Informatic Engineering, Vocational School, Universitas Sebelas Maret yuda[at]mipa.uns.ac.id fendi_aji[at]mipa.uns.ac.id taufiqurrakhman.nh[at]staff.uns.ac.id nurazizul[at]staff.uns.ac.id ovide[at]staff.uns.ac.id ekoharry[at]staff.uns.ac.id Abstract A developed country is a nation that always cares and pays attention to the existence of its history. When we study history, it will make us move forward, not even backwards in thinking. The existence of a museum is an embodiment of love for history. The problem that is happening right now is that the current generation is less enthusiastic about seeing and visiting museums, especially in the current state of the covid pandemic. There are several technological solutions that can help the success of the museum^s current vision and mission, one of which is using creative products based on Virtual Reality technology. In designing and creating a good VR application, an effective method is needed. The method is AVR or called Agile for VR. A method that prioritizes the speed and convenience of the manufacturing team and also the satisfaction of users who will use the VR product. In applying the AVR method, conditions are needed to be successful. These requirements are to understand 3 things about mindset in agile, understand 4 agile values and want to apply 12 manifestos in agile. The main stages in development are: Plan, Design, Build, Test and Review. This sequence process is repeated continuously until it is finished. This method also considers aspects of customer or user satisfaction or convenience. Keywords: Virtual, Reality, Museum, VR, Agile Share Link | Plain Format | Corresponding Author (Yudho Yudhanto)

134	Computer Science	ABS-343
Development of the Local Fish Auction Market in Batam Using Progressive Web Application (PWA) with C2C Marketplace Model Dwi Ely Kurniawan (a*), Afdhol Dzikri (b) a) Department of Informatics Engineering, Politeknik Negeri Batam, Indonesia *dwialikhs[at]polibatam.ac.id b) Department of Multimedia and Network Engineering, Politeknik Negeri Batam, Indonesia Abstract The lack of fish auction facilities makes it difficult for fishers to market their catch. This research develops a local market for fish auctions as an alternative to marketing fish to the public. The design uses Progressive Web Application technology with a C2C marketplace model. This study aims to create a Customer to Customer (C2C) marketing system model with Progressive Web Application (PWA) technology. PWAs can develop applications in a fast, reliable, and attractive user experience. The product display uses the closest distance calculation based on the region category. Transactions are limited to using the COD system to adjust to the background of knowledge, trust, and customer convenience. The development research results show that the system can work well following a user needs analysis. Keywords: fish auction, marketplace, C2C, PWA Share Link | Plain Format | Corresponding Author (Dwi Ely Kurniawan)

135	Computer Science	ABS-155
High School Timetabling Using Local Search Genetic Algorithm (LSGA) Sondari Setia Rahayu, Yaya Wihardi, Rani Megasari, Wawan Setiawan Department of Computer Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi, No. 229, Bandung, West Java, Indonesia *sondari[at]upi.edu Abstract School timetabling is an activity to arrange teachers schedules to teach in the assigned classes. This activity is being conducted every semester and takes a long time to be completed, especially in high school, resulting in lower work effectiveness. This issue is caused by difficulty in distributing the schedules according to the given constraints. Several studies have found that artificial intelligence can help to solve the timetabling problem. One technique that can be used is the Local Search Genetic Algorithm (LSGA). In this research, the implementation of LSGA was carried out to address timetabling problems in high school. The test was run over five parameters: population, number of generations, probability of mutation, computation time, and convergence. The test results indicated that the final fitness value in LSGA is 1 while the value of GA is 0.064. These results show that LSGA can afford a convergent solution to the timetabling problem in high school and more optimal than GA. Keywords: Genetic algorithm- High School Timetabling Problems (HSTP)- Local Search Genetic Algorithm (LSGA) Share Link | Plain Format | Corresponding Author (Sondari Setia Rahayu)

136	Computer Science	ABS-456
Application of Neural Network in Early Detection of Financial Crisis in Singapore Fadia Mulyarti (a), Sugiyanto (a*), Sri Subanti (a) a) Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret , Indonesia. *sugiyanto61[at]staff.uns.ac.id Abstract The financial crises that occurred in 1997 and 2008 had a negative impact on several countries, including Singapore. A financial crisis can occur suddenly so that it can endanger a country^s economy if it is not prepared for it. Therefore, early detection of financial crises is needed as a form of crisis warning so that the government can anticipate and prepare appropriate policies. The independent variables used are monthly data of 11 key macroeconomic and financial indicators of Singapore^s economy from January 1990 to June 2021. Perfect signal is used as the dependent variable in the crisis early detection system. This study aims to build a model of a financial crisis detection system in Singapore using Multilayer Perceptron Backpropagation (MLPBP) as a neural network algorithm by comparing the optimization of Stochastic Gradient Descent (SGD) and Nesterov-accelerated Adaptive Moment Estimation (Nadam). The optimal hyperparameter value in the model was searched using the grid search method based on the accuracy and obtained the best model with 11-11-1 network architecture, best optimization is Nadam, hyperparameter learning rate = 0.1, \upsilon= 0.975, \nu=0.999, \epsilon=10^{-8}, batch size = 128, epoch = 100, and sigmoid activation function. The best model is then evaluated in the testing data and obtained 95.89% accuracy, 96.7% sensitivity, and 90% specificity. The results of the Perfect Signal prediction show that from January to June 2022 it is predicted that there will be no financial crisis in Singapore. Keywords: financial crisis, early warning system, neural network, multilayer perceptron backpropagation Share Link | Plain Format | Corresponding Author (Fadia Mulyarti)

137	Computer Science	ABS-496
Cost Sensitive Boosting Performance Evaluation for Classifying Underdeveloped Regions in Indonesia Bayu Suseno, Bagus Sartono, Khairil Anwar Notodiputro IPB University Abstract Imbalanced classes are indicated by having more instances of some classes than others. The cost-Sensitive boosting algorithm is a modification of the AdaBoost algorithm, which aims to solve the problem of imbalanced classes. In this study, we evaluate the cost-sensitive Boosting algorithm AdaC2 using Indonesia^s underdeveloped region^s data. This study confirms that the cost-sensitive boosting algorithm (AdaC2) performs better in classifying the instances in minority classes than ^standards^ classification method algorithms such as Single Decision Tree, Random Forest, and AdaBoost. Keywords: Cost Sensitive Boosting, AdaC2, Statistical Learning, Imbalanced Classes, Underdeveloped Region Share Link | Plain Format | Corresponding Author (Bayu Suseno)

138	Computer Science	ABS-499
Robustness of Extreme Gradient Boosting: Regression Tree A Riyawan, K A Notodiputro, and B Sartono Institut Pertanian Bogor (IPB University) Abstract The study aims to examine the robustness of XGBoost machine learning. This research was conducted through the simulation method on data containing outliers. RMSE value measures the best of the model compared with the parametric model, namely the linear regression (least square) model. The results show that XGBoost with the proper parameter selection will be more robust than the linear regression (least square) model. Keywords: statistical learning, scalable, large datasets Share Link | Plain Format | Corresponding Author (Ade Riyawan)

139	Computer Science Education	ABS-273
Strategies to Overcome Ghosting in Webinar Tutorials: Implementation of Self-Motivation Techniques in Lectures of Science Learning for Elementary School Zakirman(a), Ucu Rahayu(a*), Mery Novianti(a), Dyah Aniza Kismiati(a), Yos Sudarso(a) Faculty of Teacher Training and Education, Universitas Terbuka, South Tangerang, Banten, Indonesia *urahayu[at]ecampus.ut.ac.id Abstract Ghosting in learning can be interpreted by not involving students in learning. The phenomenon of ghosting is a new problem that arises during the implementation of lectures online. The increase in the phenomenon of ghosting is one of them observed in class of Science learning for elementary school. Many factors make students ghosting during class of Science learning for elementary school. The negative effect of ghosting is that students become inactive, the learning is ineffective and the lecture material is also not well absorbed. To overcome ghosting can use techniques in the form of insertion of self-motivation techniques. The purpose of this study is to describe the impact of applying self-motivation techniques in preventing ghosting phenomena in class of Science learning for elementary school. This type of research is descriptive by involving a sample of open university students who took class of Science learning for elementary school for Harau (West Sumatera) region study groups in the 2021.2 school year. The instruments used in the study are observation sheets and interviews. The data in the study was analyzed descriptively. The results of the data analysis showed that the use of self-motivation techniques can increase student involvement in lectures. Self-motivation techniques can refocus students^ attention and prevent students from ghosting during lectures. Keywords: Ghosting-Webinar Tutorial-Online Learning-Science-Distance Learning Share Link | Plain Format | Corresponding Author (zakirman zakirman)

140	Computer Science Education	ABS-41
CORPORA DEVELOPMENT FOR LEARNING TAMIL-MALAY BILINGUAL WORD REPRESENTATIONS FROM SENTENCE-ALIGNED PARALLEL CORPUS Dr. Kingston pal Thamburaj Dr. Kartheges Ponniah, Dr.Ilankumaran Sivanathan Dr. MuniiswaranKumar Sultan Idris Education University, Malaysia Abstract In this study, we propose sentence-aligned parallel corpora in Tamil and Malay, two languages. These languages have few resources, are underexplored, and have linguistic features that make machine interpretation problematic. The corpora are generated from web sources with content that is translated into multiple languages. The corpora offered greatly expand existing materials which are either insufficiently large or limited to a certain domain (such as health). We also include a different test corpus produced from an unaffiliated internet source that can be utilized to critically validate accuracy in two languages. We also discuss how to build such corpora utilizing tools made possible by recent breakthroughs in machine interpretation and cross-lingual query using deep neural network-based approaches. Limited accuracy and low coverage are common characteristics of learned models (high out-of-vocabulary rates). To improve both, we apply a new data resource called parallel corpora in this study. We increase coverage by employing bilingual lexicon generation approaches to learn new interpretations from comparable corpora, starting with a tiny bitext and associated phrase-based SMT model. To increase accuracy, we enrich the model^s characteristic space with interpretation scores computed over parallel corpora. Keywords: parallel corpus, bilingual, Tamil, Malay, Linguistic, machine translation, vocabulary rates, SMT model, learning Share Link | Plain Format | Corresponding Author (KINGSTON PAL THAMBURAJ)

141	Computer Science Education	ABS-304
Assembler Edu Platform: Learning Media based on Augmented Reality to support student innovation and collaboration Muhammad Rafli, Noviyanti, Putri Apriyanti, Nuur Wachid Abdul Majid, Sofyan Iskandar, Fitri Nuraeni, Hafiziani Eka Putri Universitas Pendidikan indonesia Abstract Assemblr Edu is an application that provides interactive 3D augmented reality-based learning media for students. The use of this application as a learning medium is still rare to find either at school or in the home environment. Therefore, research was conducted on the effectiveness of the application as a learning medium for teaching and learning activities of the Assemblr Edu application. In the application, various learning topics are presented that can be studied by students from elementary to high school levels with an interactive 3D Augmented Reality model for students. This research uses descriptive quantitative research method by utilizing google form in disturbing questionnaires in form of questionnaires. This article will discuss 3D augmented reality technology in form of applications that can connect users with the real world and the virtual world in interactive 3D in real-time. Keywords: Assemblr Edu, AR, Collaborative, learning media, education Share Link | Plain Format | Corresponding Author (Nuur Wachid Abdul Majid)

142	Computer Science Education	ABS-474
THE EFFECTIVENESS OF MOBILE LEARNING APPLICATIONS IN NATURAL SCIENCE LEARNING IN POST-PANDEMIC COVID-19 Inestha Louk1, a) , Didi Teguh Chandra2, b) and Parsaoran Siahaan3, c) 1 Natural Science Education, School of Postgraduate, Universitas Pendidikan Indonesia. 2,3Physics Education Department, Universitas Pendidikan Indonesia. Abstract Mobile learning applications as online learning media in post-pandemic Covid-19 that hit the world have been used in almost all countries, including developing countries such as Indonesia. All learning uses mobile learning applications, including natural science learning. So science teachers are required to use valid and effective mobile learning applications to improve student learning outcomes in natural science learning during online learning. Therefore, this study aims to produce a valid and effective science mobile learning application for use by grade IX students in online natural science learning. The study was conducted in a limited trial in terms of the results of the validation of the mobile learning application, student perceptions, and student learning outcomes. The research design used is the ADDIE development model which includes (1) analysis, (2) design, (3) development, (3) implementation, and (4) evaluation. Collecting data using expert judgment, questionnaires to determine student perceptions, and pretest-posttest to determine the effectiveness of mobile learning applications on student learning outcomes. Research respondents consisted of 31 students in the control class and 32 students in the experimental class. The results showed that the mobile learning application was valid, students^ perceptions of the mobile learning application based on the questionnaire obtained 86% of the practical category and the effectiveness of the mobile learning application seen from the experimental class student learning outcomes was better than the control class, namely the average student n-gain value. the experimental class is 0.71 and the control class is 0.60. Keywords: mobile learning, natural science Share Link | Plain Format | Corresponding Author (Inestha Louk)

143	Computer Science Education	ABS-477
Improving computational thinking skills through game based learning: a systematic literature review Emilia Candrawati, Ratnaningsih Eko Sardjono, Binar Kurnia Prahani 1 Universitas Pendidikan Indonesia, West Java, Indonesia 2 Chemistry Department, Universitas Pendidikan Indonesia, West Java, Indonesia 3 Universitas Negeri Surabaya, Surabaya, Indonesia Abstract Computational Thinking (CT) is one of the 21st century life skills that students must have. To equip students with computational thinking skills, an effective learning strategy is needed. One of the alternative learning strategies in the implementation of CT is game based learning. This study uses a systematic literature review analysis method. Searching using the keyword ^Computational Thinking^ using publish or perish software, obtained 950 literatures published in 2018 to 2022. From the results of the analysis of CT components in the title and abstract using bibliometric analysis, further research opportunities can be obtained by linking the keywords Computational thinking, game based learning, and student achievement in developing 21st century life skills. Analysis results from the literature review showed that game based learning is an interesting and fun strategy to improve CT skills for students. Keywords: Computational thinking- game based-learning Share Link | Plain Format | Corresponding Author (Emilia Candrawati)

144	ESD in Science Education	ABS-261
3D Hologram: An Alternative Media on Science Learning in Elementary School In The Post-Covid-19 Period Yayan Carlian (a*), Sukma Mir^ayatul Hayati (a), and Inne Marthyane Pratiwi (a) a) Pendidikan Guru Madrasah Ibtidaiyah, Universitas Islam Negeri Sunan Gunung Djati, Jl. Soekarno Hatta, Kec. Gedebage, Bandung 40294, Indonesia *yayan.carlian[at]uinsgd.ac.id Abstract The spread of covid-19 caused a change in learning patterns from offline to online. Online learning causes saturation in students in the learning process. Innovative teaching methods help teachers make students play an active role in learning in the post-pandemic period. A 3D hologram is a visual percentage technique by utilizes reflecting objects or glass so that objects seem to be in the real world. This research aims to develop a 3D hologram media that is effectively used in the post-covid-19 period by obtaining feasibility and response scores from users. This medium was designed using the Research and Development (RnD) method of the Borg and Gall development model. The population of this study was sixth graders of SDN Pasirhuni for a limited trial. The data collection techniques used are observation, interviews, media and material validation questionnaires, and repons of teachers and students. The length of the manufacturing process and the expensive manufacturing costs were refuted in this study by producing 3D hologram media that is easy to make, utilizing used goods, and fairly cheap. So that teachers, students, and the community can try to create and use their hologram 3D media at home or school. The results showed that 3D hologram media can be an effective learning medium used in the post-covid-19 learning process. Keywords: 3D Hologram, Science Learning, Research and Development Share Link | Plain Format | Corresponding Author (Yayan Carlian)

145	ESD in Science Education	ABS-15
Profile (Knowledge, Attitude and Practice) of Sustainable Science Teachers at Junior High Schools in Riau Province towards the Sustainable Development Goals (SDGs) Berry Kurnia Vilmala (a,c), Ida Kaniawati(a*), Andi Suhandi(a), Anna Permanasari(b) a) Science Education Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No 229, Bandung, 40154, Indonesia b) Science Education, Universitas Pakuan, Jl. Pakuan, Bogor, West Java 16129, Indonesia c) Science Education, Universitas Muhammadiyah Riau, Jl. Tuanku Tambusai, Pekanbaru, Riau 28290, Indonesia Abstract The SDGs are global agenda which consists of environmental, economic and socio-cultural dimensions. The implementation of the SDGs requires the involvement of everyone, including individuals and groups formally, informally and non-formally. This study used survey method, involving 40 respondents of science teachers who are members of PPII Riau region. Research data were collected using a questionnaire to measure the profile (knowledge, attitudes and practices) of science teachers about the SDGs. The results showed that the percentage of the average score of science teachers was 81.5% for the knowledge aspect, 85.63% for the attitude aspect and 80.88% for the practical aspect. In general, the profile of science teachers regarding the SDGs is in the high category. Various efforts are still needed so that science teachers^ understanding of the SDGs is more comprehensive and can be taught to students in science subjects at school. Keywords: Sustainable Development Goals- Sustainable Science Teacher- Educational for Sustainable Development Share Link | Plain Format | Corresponding Author (Berry Kurnia Vilmala)

146	ESD in Science Education	ABS-24
Media Learning Comic of Concepts Science Edutainment Oriented Enviromental Literacy and Technology Literacy on Environmental Pollution Materials Gunawan Azis1*, Ida Hamidah2, and Amprasto3 1Master Program of Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia 2Department of Mechanical Engineering Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia 3Department of Biology Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract Learning media in schools has provided added value in the teaching and learning process. One of the learning media that is widely used is visual based learning media. Visual based learning media is a learning media that is able to display learning materials in the form of displays. In developing visual media, the government issues Natural Science (IPA) textbooks for each level. Science textbooks are not enough to achieve ideal learning, but must be supported by other media. One of them is to use comics which can be said to be a pretty good visual medium. The purpose of this research is to produce an edutainment based comic learning media that can improve students environmental literacy and technological literacy. To achieve this goal, this research uses the Analysis, Design, Development, Implementation, Evaluation (ADDIE) research and development model. In addition, the ADDIE model is a general learning model and is suitable for development research. The ADDIE research and development model has 5 stages, which include (1) analysis, (2) design, (3) development, (4) implementation, and (5) evaluation. To obtain data or information, researchers used data collection techniques by means of observation, interviews, documentation, questionnaires and tests. The data is then processed so that it can be seen how the attractiveness and effectiveness of the science concept edutainment comics learning media can improve students environmental literacy and technological literacy on environmental pollution materials. The subjects in this study were seventh grade students of the Bandung National Junior High School. Meanwhile, the instruments used for data collection in this study were environmental literacy and technological literacy tests to measure the domains of content, context, environmental literacy competence and technological literacy. Keywords: Comic Media- Edutainment Science- Environmental Literacy- Technology Literacy- Environmental Pollution Share Link | Plain Format | Corresponding Author (Gunawan Azis)

147	ESD in Science Education	ABS-290
Analysis of Students Perception on The Implementation of E-Learning USK: An Evaluation Using The CIPP Model Andi Ulfa Tenri Pada (a*), Marty Mawarpuri (b), Mimie Saputri (a), Hendra Yulisman (a) (a) Biology education department, Teacher Training and Education Faculty, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia *andi_ulfa[at]unsyiah.ac.id (b) Psychology Department, Medicine Faculty, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia Abstract Universitas Syiah Kuala (USK) has developed E-Learning USK, a Learning Management System in order to face the era of The Fourth Industrial Revolution. The implementation of E-Learning USK has been implemented thoroughly when the COVID-19 pandemic was enforced. However, information regarding the effectiveness of using this LMS is not yet available. Therefore, through this research, a survey was conducted with the aim of obtaining an overview of the effectiveness of the implementation of E-Learning USK from the students point of view. The research sample consisted of 504 students from various faculties at USK. The research instrument used is a Likert scale which was developed based on the CIPP model indicators and distributed online using Google Form. Data analysis was done descriptively. The results showed that students considered the application of E-Learning USK to be in the good category. However, they consider that there are still obstacles in the campus infrastructure. This study provides recommendations that will become input for strategies and policies for implementing LMS in Indonesia, especially at Universitas Syiah Kuala. Keywords: Program Evaluation- E-Learning USK- Learning Management System- CIPP Model Share Link | Plain Format | Corresponding Author (Hendra Yulisman)

148	ESD in Science Education	ABS-38
Biogas Digital Comic as Media for Improving Renewable Energy Literacy Dindin Nasrudin, Chaerul Rochman, Intan Julianti Diningsih UIN Sunan Gunung Djati Bandung Abstract The use of renewable energy as a substitute for fossil energy must continue to be promoted. This study aims to reveal the development of digital comics on the topic of biogas energy as a learning medium. The method used is research and development with the DDDE model (Decide, Design, Develop, and Evaluate). The results showed that biogas digital comics were very good to be used as learning media. This study recommends the use of comics as a medium of learning on other topics Keywords: Biogas, Digital Comics, Energy Literacy, Renewable Energy Share Link | Plain Format | Corresponding Author (Dindin Nasrudin)

149	ESD in Science Education	ABS-39
The Android Based ASAM.ID Application as a Learning Media for Environmental Literacy Dindin Nasrudin, Chaerul Rochman, Pian Septian UIN Sunan Gunung Djati Bandung Abstract Environmentally friendly technology was created to facilitate human life without the need to damage or have a negative impact on the surrounding environment. This paper wants to reveal the process of developing an android application based on waste management as a medium for learning environmental literacy. This research is a Research and Development (R&D). The results of this study reveal a flow chart for the development of an android application for waste management, including video of waste management transactions, information on waste management into renewable energy, discussions of energy literacy, as well as expert validation results regarding the feasibility of the application. This study concludes that in terms of content and packaging, this application is suitable for use as a medium of learning at the secondary school level. Keywords: environmentally friendly technology, environmental literacy, waste management Share Link | Plain Format | Corresponding Author (Dindin Nasrudin)

150	ESD in Science Education	ABS-43
How Deep Do Know on Climate Change? A Report from Java^ Primary School Students Cucun Sutinah (a*), Ari Widodo (b), Muslim (c) Program Studi Doktoral Pendidikan Dasar, Sekolah Pascasarjana, Universitas Pendidikan Indonesia Abstract Climate change with its increasingly visible symptoms is a global issue that must be immediately responded to by the community. Responding to climate change requires awareness of climate change issues based on a correct understanding of climate change, from symptoms to impacts. Due to its complexity, the issue of climate change needs to be realized and understood by all levels of society, including elementary school students. This study aims to describe the knowledge of elementary school students related to climate change. The method used is descriptive quantitative. The instrument used is a questionnaire using a Likert scale (1-4). A total of 1,410 elementary school students in grades 4-6 from several regions on the Island of Java participated in filling out a questionnaire distributed online. Knowledge data related to climate change were analyzed descriptively. The findings show that, on average, students have limited knowledge and misconceptions about climate change. A minimal view is shown in knowledge about the causes, symptoms, effects, and efforts to mitigate and adapt to climate change. The implications of the research findings suggest the importance of explicit learning related to climate change starting at the elementary school level. Keywords: Climate Change- Awareness- Knowledge Share Link | Plain Format | Corresponding Author (Cucun Sutinah)

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