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91	Chemistry Education	ABS-44
Development of Electronic Worksheet Based on Problem Based Learning on Acid-Base Materials to Develop Students Problem Solving Ability Putri Deti Ratih (1*), Eli Rohaeti (2) 1Master Student of Chemistry Education, Faculty Mathematics and Naturale Science, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia 2Departement of Chemistry Education, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia Abstract The objective of study were to analyze the characteristics and feasibility of electronic worksheet based on problem-based learning on acid-base materials to develop student problem-solving abilities. The study was Research and Development (R & D) using a 4D modified model by Thiagarajan which consisted of Define, Design, Develop, and Disseminate. Product validation was performed by expert judgment, product practicality test was performed by reviewer and peer reviewer, and readability test was performed by students. Instruments of data collection were formed of product feasibility validation sheets, practicality test assessment sheets, and readability tests. Data analysis techniques used calculation of the average score which was categorized according to ideal assessment criteria. The results of the development research showed that an electronic worksheet based on problem-based learning which was developed in a form of a website consisting of 4 learning activities with problem-based learning syntax adapted to acid-base and an electronic worksheet based on problem-based learning on acid-base was very feasible to be used. Based on validation from expert judgment, practicality test assessments from reviewers and peer reviewers, and readability tests by students including the very good category. Therefore, electronic worksheets based on problem-based learning is suitable for use in chemistry learning on acid-base materials to develop problem-solving abilities. Keywords: Electronic worksheet, problem-based learning, problem-solving ability Share Link | Plain Format | Corresponding Author (Putri Deti Ratih)

92	Chemistry Education	ABS-58
Development of Electronic Worksheet Based on Research Oriented Collaborative Inquiry Learning (REORCILEA) on Chemical Equilibrium to Improve Scientific Argumentation Skills Tsaniyatur Rizqi Nurul Laily (a*), Eli Rohaeti (a) (a) Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Negeri Yogyakarta. Jl. Colombo No. 1 Yogyakarta 55281, Indonesia *tsaniyaturrizqi.2020[at]student.uny.ac.id Abstract This study aimed to develop and determine the feasibility of electronic worksheet based on Research Oriented Collaborative Inquiry Learning on Chemical Equilibrium to improve students^ scientific argumentation skills. The development model used in this research was R&D which adopted the phase from 4D by Thiagarajan. 4D development model consisting of 4 research and development steps, namely define, design, develop and disseminate. The instruments in this study were questionnaires used to obtain input data for products, and quantitative scores as the value of media feasibility. The results showed that the components of the e-worksheet on the aspects of the materials, learning, visual display, and software engineering as a whole were suitable for used by students. Percentage of assessment by chemistry teachers were 92.50%, peer reviewers were 90.00% and students^ rating were 87.00%. Therefore, the electronic worksheet based on research oriented collaborative inquiry learning (REORCILEA) is worthy of being used as a learning media on chemical equilibrium to improve students^ scientific argumentation skills. Keywords: Development, electronic worksheet, REORCILEA, chemical equilibrium, argumentation Share Link | Plain Format | Corresponding Author (Tsaniyatur Rizqi Nurul Laily)

93	Chemistry Education	ABS-323
The preconception of Preservice Teacher on Biopolymer Content A Julian1, a) Hernani2, b) and B Anwar3 1,2,3 Department of Chemical Education, University of Education Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract Abstract. This research aims to identify preconceptions of preservice teachers related to the bioplastic context on biopolymer content as the basis for developing education sustainable development (ESD) oriented learning designs. This research uses content analysis methods, with participants of semester IV students in one of the Chemical Education study programs, public universities in West Java. The instrument used in the study was a consisting of 13 questions on the dimensions of cognitive processes. The results of the analysis of preconception data showed that overall identified as many as 41% of preservice teachers have a preconception understanding with sufficient categories, 33% of preservice teachers with bad categories, 23% of preservice teachers with good categories, and 3% of preservice teachers have a preconception understanding with very good categories. Preservice teachers were identified as experiencing learning barriers in several sub-discussions, namely (1) the classification of biodegradable biopolymers, (2) the benefits of biopolymers in various fields (3) the function of materials in bioplastic manufacturing, (4) the dilemma of sustainability issues (5) the benefits of bioplastics for the environment and, (6) the process of decomposing starch biopolymers. Based on these findings, there are several suitable interventions as a reference in developing a didactic design, such as showing learning videos related to the manufacture of simple bioplastics, graphs of the development and annual production of bioplastics, images from bioplastic applications in various fields, and infographics related to the decomposition process and the continuity benefits of bioplastics. Keywords: Preconception, Biopolymer Content, bioplastic context Share Link | Plain Format | Corresponding Author (Alfira Julian Pratiwi)

94	Chemistry Education	ABS-78
A DIGITAL TEACHING BOOK BASED ON LOCAL CULTURE IN CHEMISTRY LEARNING I Wayan Redhana1,a) Ida Bagus Nyoman Sudria1,b), Ni Nyoman Nopi Satriyanti1,c), I Gusti Putu Abdi Sucita S. Putra1,d), I Nyoman Suardana2,d), and Irwanto3e 1Chemistry Education Study Program, Universitas Pendidikan Ganesha, Indonesia. 2Science Education Study Program, Universitas Pendidikan Ganesha, Indonesia 3Department of Chemistry Education, Universitas Negeri Jakarta, Indonesia Abstract Blended learning is increasingly gaining a place in the era of the development of information technology and the internet. To support this learning, digital learning resources are needed. In this study, a digital chemistry teaching book based on Balinese local cultures was developed on the topic of acids and bases as a learning resource in blended learning. The development of this book used the ADDIE model. The analysis phase included an analysis of the chemistry content, teacher and student needs, and the Balinese local cultures. The design phase included the formulation of an outline of the digital chemistry teaching book based on local Balinese cultures. The development stage included drafting the digital book based on local Balinese cultures, expert validation, readability test, practicality test, and effectiveness test. The results showed that the characteristics of the developed digital book included that it was in electronic form (PDF files) and based on local Balinese cultures. It is valid in terms of content, language, and media. The readability of the book was classified as very good. It was quite practical to be implemented and effective to improve the learning outcomes of high school students. It is one of the digital learning resources that can support the implementation of blended learning. Keywords: blended learning, digital book, and local cultures Share Link | Plain Format | Corresponding Author (I Wayan Redhana)

95	Chemistry Education	ABS-336
How to develop a hydrocarbon electronic book for students critical thinking skills through the 4S TMD method? Nurjannah Lubis(a*), Sjaeful Anwar(b), Omay Sumarna(c) a) Department of Chemistry Education, Indonesia University of Education, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia *nurjannahlubis15[at]upi.edu Abstract This study aims to develop the long-awaited material electronic book with the Four-Step Teaching Material Development (4S TMD) model to develop students^ critical thinking skills. The research method used is development research (DR) which consists of three stages, namely design, development, and evaluation. This article is the first part of the development of teaching materials which consists of four stages, namely selection, structuring, characterization, and didactic reduction. This article is part of the research results with a focus on the selection stage. At the selection stage, material development begins with developing learning indicators, developing concepts based on curriculum implementation, developing basic concepts sourced from international textbooks, and finally developing skills that can be integrated with concepts. The result of this selection is that the teaching materials developed are in accordance with the curriculum, and aspects of critical thinking skills are in accordance with the materials developed. Selection results Assessment by expert lecturers in the field of chemistry education. Keywords: 4S TMD, Critical Thinking Skills, Hidrocarbon Share Link | Plain Format | Corresponding Author (NURJANNAH LUBIS)

96	Chemistry Education	ABS-337
The Importance of E-Book Development Using The 4S-TMD Method to Improve Environmental Literacy Intan Fitriyanti Sahra (a*), Sjaeful Anwar (a) a) Department of Chemistry Education, Indonesia University of Education, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia *intansahra27[at]upi.edu Abstract This research is a preliminary study that aims to describe the importance of developing chemistry electronic books using Four Steps Teaching Material Development (4STMD) method to improve environmental literacy. The 4STMD method consists of four stages, namely selection, structuring, characterization and didactic reduction. This research will focus on the selection stage as the first step. Environmental literacy is the ability of each individual to understand and interpret environmental conditions, from the results of this understanding and interpretation each individual can decide on appropriate actions to maintain, restore and improve the condition of an environment. Environmental literacy components that must be achieved include environmental knowledge, attitudes towards the environment, cognitive skills and behavior towards the environment. This study uses a Development Research (DR) research method with the types of Design, Development, and Evaluation. In this article will discuss the importance of developing chemistry e-books in the selection stage. The results of the selection stage determine the basic competencies that are formulated as learning indicators and concept labels based on curriculum demands. The results of the selection stage are also related to the context of content related to daily life and the development of fundamental concepts sourced from international textbooks, as well as pedagogic contexts related to the achievement of environmental literacy. The results of the selection stage have been evaluated by expert lecturers in the field of chemistry education who have been declared valid. Keywords: E-Book Development, 4S-TMD, Environmental literacy Share Link | Plain Format | Corresponding Author (Intan Fitriyanti Sahra)

97	Chemistry Education	ABS-341
Voltaic Cell Learning Design Using the RADEC (Read, Answer, Discussion, Explain and Create) Model Oriented to the Pancasila Student Profile Nursida Sutantri (a*), Wahyu Sopandi (a), Wawan Wahyu (a) a) Department of Chemistry Education, Faculty of Mathematics and Sciences Education, Indonesia University Of Education Jalan Dr. Setiabudhi No. 229 Bandung 40154, Indonesia *nursidasutantri[at]gmail.com Abstract This study aims to describe the Voltaic Cell Learning Design using the RADEC (Read, Answer, Discuss, Explain and Create) learning Model based on the Pancasila Student Profile. The method used is a qualitative method with a descriptive approach. The research instrument is a validation sheet in the form of a questionnaire given to five validators consisting of two Expert Lecturers of Chemistry Education at the Indonesian Education University and three Chemistry teachers who teach at Penggerak School in Bandung City and use the Merdeka Curriculum. The data processing results showed an average percentage of 96.7% for the suitability of the lesson plan with four aspects: Formulation of Competency, Achievement Indicators and Learning Objectives, Content presented, Language and Time. The data processing results also show a match between the voltaic cell learning activities using the RADEC learning model and the appearance of the Pancasila student profile are Faith in God Almighty and Noble Morals, Global Diversity, Mutual Cooperation, Independent, Critical Reasoning and Creative produce an average percentage of 95.4% with an excellent category. This study indicates that the voltaic cell learning design using the RADEC model can bring up the Pancasila Student Profile. Keywords: RADEC- Pancasila Student Profile- Learning Design Share Link | Plain Format | Corresponding Author (Nursida Sutantri)

98	Chemistry Education	ABS-88
Multiple Representations Analysis of Chemical Bonding Concepts in General Chemistry Books Dian Hasanah (a*), Wiji (b), Sri Mulyani (b), Tuszie Widhiyanti (b) a) Chemistry Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudi 229, Bandung 40154, Indonesia *dianhasanahdian[at]gmail.com b) Department of Chemistry Education, Universitas Pendidikan Indonesia, Bandung 40154, Indonesia Abstract This research is qualitative with an evaluative descriptive design that aims to analyze the use of three levels of chemical representation in eight general chemistry books. The concepts analyzed include the concepts of ionic, covalent, and metallic bonds. The analysis focused on two main criteria, namely the use of macroscopic, submicroscopic, and symbolic levels of representation and the relationship between the three levels. The results of the analysis show that in the concept of ionic bonding there are pictures of some salts or reactions for the formation of ionic compounds from their elements at the macroscopic level, explanations at the sub-microscopic level, and models of the arrangement of ions in the ionic crystal lattice for the symbolic level. In the concept of covalent bonds- images of gases or covalent compounds at the macroscopic level, explanation at the sub-microscopic level, and models of electron density shifts at the symbolic level. While in the concept of metallic bonds- pictures of some metals at the macroscopic level, explanation at the sub-microscopic level, and electron cloud models at the symbolic level. The relationship between the levels of representation was found in five of the eight general chemistry books analyzed. General chemistry books present the relationship between the three levels of representation in images that include energy level diagrams, atomic or ionic arrangement models, reaction equations, and explanation of the molecular level. Keywords: general chemistry book, chemical bonding, multiple representation Share Link | Plain Format | Corresponding Author (Dian Hasanah)

99	Chemistry Education	ABS-355
PROBLEM-BASED LEARNING PRESENTATION WITH SUPPORTS OF STUDENT WORKSHEETS AND VIDEO SEGMENTS ON PROVING HYPOTHESES I. B. N. Sudria- I. A. F. K. Gupta- I W. Suja- I W. Redhana Universitas Pendidikan Ganesha Abstract This work aimed to develop a power point prototype that should accommodate at least experiment video segments of proving targeted hypotheses as the main aspect to optimize student engagement in computer based inquiry learning. This development of product with dominantly having learning media characteristics followed Luther^s media development model which consisted of five stages, namely (1) concept of integrated video segments that effectively visualize hypothesis proving experiments in online learning, (2) designing online scientifically active learning via inductive reasoning especially to help majority students with less adequate of scientific skills and/or relatively poor prerequisite scientific conceptions, (3) collecting material, (4) video assembly considering about five minute duration of optimal time video watching, and (5) distributing product for online learning. A prototype of chemistry scientifically learning power point in Indonesian language has been successfully developed and implemented on acid-base solution topic with strong support facilitation of scientifically student learning worksheets and video segments of hypothesis proving. The worksheets based learning activities begun with listing out back ground information of targeted scientifically learning objects obtained from short introduction paragraph/s of background phenomena, then questioning to arrive at investigative questions, formulating hypotheses, designing of hypothesis proving, collecting data, data analysis, and confirming the hypotheses validity of the targeted scientific conceptions as conclusion of the scientifically learning. Good validity of this resulted product was given respectively by content and media experts with support of very good appreciation given by a chemistry teacher and students of a secondary school. Keywords: power point, scientifically learning, problem-based learning model, hypothesis proving video segments, and student worksheets Share Link | Plain Format | Corresponding Author (Ida Bagus Nyoman Sudria)

100	Chemistry Education	ABS-102
Analysis of Misconceptions on the Factors that Affect the Reaction Rate Iqlima Rahayu (a*), Wiji Wiji (b), Tuszie Widhiyanti (b), Sri Mulyani (b) (a) Master Program of Chemsitry Education, Indonesia University of Education Jl. Setiabudi No. 229 Bandung 40154 (b) Department of Chemistry Education, Indonesia University of Education Jl. Setiabudi No. 229 Bandung 40154 *rahayu.iqlima[at]gmail.com, maswiji[at]upi.edu Abstract This study aims to analyze the misconceptions on the factors that affect the reaction rate through a qualitative descriptive method. The misconceptions experienced by students are examined through various sources of journals, books, and field experiences. Furthermore, research data was carried out to obtain misconceptions that were often experienced by students and the sources of misconceptions. There are 30 misconceptions on the factors that affect the reaction rate based on the literature. Based on the results of the study, there were three misconceptions experienced by 20 students from the total number of 21 students. The misconception that most students experience are the concentration of reactants increases reaction will take longer because there will be much more particles to collide. In addition, the rate of the same reactions are compared at different temperatures then the reaction with the highest temperature is defined as the rate of reaction. The next misconception is the temperature increase in an exothermic reaction can increase the forward rate and decrease the reverse rate because the equilibrium shifts to the right. Misconceptions are caused by information sources from the internet, teacher teaching in schools, textbooks used by students, and everyday life experiences of students. Keywords: Misconceptions- Factors that affect the reaction rate Share Link | Plain Format | Corresponding Author (Iqlima Rahayu)

101	Chemistry Education	ABS-358
Development of Teaching Materials on Internalized Coloid Materials of Islamic Values Rizki Fitriani Nasution(a*), Ayi Darmana(b), Ajat Sudrajat(b) a)Student of Chemistry Education Departement, Graduated School of Universitas Negeri Medan, Jl. Willem Iskandar, Medan, Indonesia *rizkifitrianinasution[at]gmail.com b)Lecturer of Chemistry Education Department, Graduated School of Universitas Negeri Medan, Jl. Willem Iskandar, Medan, Indonesia Abstract Students have the ability to form positive attitudes towards chemistry by realizing the regularity and beauty of nature and glorifying the greatness of God Almighty according to the Core Competencies (KI 1 and KI 2) Curriculum 2013. The average student need for teaching materials is 31 in the interval 31-33. . The development of teaching materials on colloidal material integrated with Islamic values is needed in chemistry learning so that this research is oriented to development research (R & D). The teaching materials developed in this study were implemented in Budisatrya Private High School, using a simple random sampling technique. The research instrument used was the BSNP standard and multiple choice questions to see the improvement in student chemistry learning outcomes. The results of research on the development of teaching materials on colloidal material internalized Islamic values are: (1) The average value of the feasibility of teaching materials is 4.25 (2) There is an increase in student learning outcomes with an average gain of 41.5% or 0.41 (3) There is an increase in student motivation with a mean of 29.5 at 29-30 intervals Keywords: Teaching materials, Coloid, Islamic values Share Link | Plain Format | Corresponding Author (Rizki Fitriani Nasution)

102	Chemistry Education	ABS-108
Review of Chemistry Learning Modules on the Impact of Students Literacy Putri Wulandari Nabila (a*), Wiji (b**), Tuszie Widhiyanti (b) Sri Mulyani (b) a) Chemistry Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudi No. 229, Bandung 40154, Indonesia *putriwnabilaa[at]gmail.com b) Department of Chemistry Education, Universitas Pendidikan Indonesia, Bandung 40154, Indonesia **maswiji[at]upi.edu Abstract This study aims to review the chemistry learning module that impacts students literacy. The method used is document analysis, which is the articles are between 2012-2022. The articles reviewed were 20 articles, consisting of 17 journals and three proceedings. They have been indexed by Scopus or accredited by SINTA. The main variables analyzed include module development methods, types of literacy skills, and the relationship between development methods and literacy skills. The results obtained indicate nine methods used: multi-representation-based modules, natural of sciences, STEM, green chemistry, context-based learning, socio-scientific issues, cooperative learning, inquiry, and literacy-based. The types of literacy skills are grouped based on the competencies published by PISA which include explaining phenomena (about 19 articles of 20), designing investigations (about 18 articles of 20), and evaluating contextual investigations (about 19 articles of 20). The relationship between the development method and the type of literacy skills being trained shows a connection at each step. The modules developed have the impact of training and improving student literacy. Keywords: chemistry learning module, chemical literacy Share Link | Plain Format | Corresponding Author (Putri Wulandari Nabila)

103	Chemistry Education	ABS-366
How To Develop E-Book Acid and Base Socio Scientific Issue-based With The 4S TMD Method? Cut Taqiyya Mauliza (a*), Sjaeful Anwar (a) a) Departemen of Chemistry Education, Indonesia University of Education, Jl. Dr. Setiabudi no. 299, Bandung 40154, Indonesia *cuttaqiyyamauliza97[at]upi.edu Abstract This study aims to develop teaching materials about acid-base based on the socio scientific issue. The research method used is Developmental Research (DR) using the Four Steps Teaching Material Development (4S-TMD) method. The stages of developing teaching materials include 4 stages, namely selection, structuring, characterization and didactic reduction. The development of this selection stage includes the suitability of indicators with concept labels, the correctness of the acid-base concept using standardized textbook sources, the correctness of the content context and the correctness of the socio-scientific issue-based pedagogic context that can be related to the acid-base concept. The results of this selection stage are evaluated by expert lecturers. The results of this selection stage research indicate that the teaching materials developed are in accordance with the demands of the curriculum, the context of the content presented in accordance with the socio-scientific issue aspects developed is valid. The first part of the development of teaching materials which includes the steps of the selection stage results in the design of acid-base teaching materials based on the socio-scientific issue. Keywords: e-textbook an acid-base, Socio Scientific Issue, 4S TMD Share Link | Plain Format | Corresponding Author (Cut Taqiyya Mauliza)

104	Chemistry Education	ABS-126
Preliminary Research: Search, Solve, Create, and Share (SSCS) Model to Improve Concept Mastery and Build Student Creativity on Corrosion Topics Faisal Al Banna (a*), Wawan Wahyu (a), Wahyu Sopandi (a) a) Department of Chemistry Education, Faculty of Mathematics and Sciences Education, Indonesia University of Education Jalan Dr. Setiabudhi no. 229, Bandung 40154, Indonesia *faisalalbanna99[at]upi.edu Abstract The article describes a preliminary study on developing the SSCS learning model to improve concept mastery and build creativity for class XII high school students. Based on the acquisition of literature studies regarding various cases in the current learning process, the SSCS model will be applied to the learning process in the classroom, with the main focus being to generate creativity from the concepts learned by students. Then a learning design is prepared, which will be tested for its quality internally and externally by the experts and other educators to get an accurate picture of creativity in learning. Efforts have been made by conducting surveys on teachers of related subjects to produce some input on the continuity of the research to be carried out. Keywords: SSCS- Creativity- Concept Mastery Share Link | Plain Format | Corresponding Author (Faisal Al Banna)

105	Chemistry Education	ABS-383
Nature of Science in the Teaching Materials about Chemistry of the Rare Earth Elements: Results from a Qualitative Content Analysis Study Risnawati Umar, Hernani, and Ahmad Mudzakir Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia Abstract Understanding nature of science (NOS) is part of developing scientific literacy skills. There are seven aspects of NOS that are included- tentative, subjectivity, empirical, creative and imaginative, socio-cultural, diverse research methods and relationship between scientific theory & law. The purpose of this research is to obtain the concept maps and teaching-learning sequences (TLS) from the views of scientists regarding to understanding of NOS on rare earth elements (REE) through Education For Sustainable Development (ESD) approach. The qualitative content analysis method was chosen in this study throughout the literature analysis based on books sources, review articles and research articles. The instrument used in this study was a content analysis format, which was described descriptively to build the understanding NOS of prospective chemistry teacher students. The outcome of the analysis are compiled in the form of concept maps and TLS with triangulation between researchers as a guarantee of validity. The results of the concept map and TLS that have been compiled show the relationship between the seven aspects of NOS which are integrated into REE learning materials. REE is known have unique properties based on the electron configuration but is increasingly difficult to find in nature, thus encouraging creativity to create renewable energy that can be recycled from electronic waste. The outcomes of this REE and NOS concept map and TLS are expected to be used to develop the design of REE teaching materials and didactic designs that are oriented ESD. Keywords: Nature of science (NOS), concept maps and teaching-learning sequences (TLS), Rare earth elements Share Link | Plain Format | Corresponding Author (Risnawati Umar)

106	Chemistry Education	ABS-130
Making Android-Based Augmented Reality in Buffer Solution Practicum to Improve Students^ Multiple Representation Ability Sari Sari 1a), Nisrina Zulfa Salsabila b) and Ferli Septi Irwansyah c) 1,2,3Program Studi Pendidikan Kimia, Jurusan Pendidikan MIPA, Fakultas Tarbiyah dan Keguruan, Universitas Islam Negeri Sunan Gunung Djati Bandung, Jl. A. H. Nasution No. 105, Bandung, 40614, Indonesia Abstract This study aimed to describe the appearance, analyze results of validation test and feasibility test of android-based augmented reality in a buffer solution practicum to improve students^ multiple representation abilities, which is named Augmented Reality of Buffer Experiment (ARBE). The research was conducted using the Design Based Research (DBR) method which consisted of the analysis and development stages. The display on ARBE did not only present a practicum menu, but there were five other menus, namely user guide menu, materials, basic competencies, quizzes attached with answer keys and discussion, and compiler profiles. The results of the validation tests carried out by four validators obtained an average value of ¬rcount 0.8482 and wasdeclared valid, while the feasibility test was limited to 31 High School students of Eleventh Grade of Science Program obtaining an average percentage of 82.14% indicating that android-based augmented reality in the buffer solution practicum to improve students^ multiple representation abilities, it is very feasible to use it as a learning medium for buffer solution material. Keywords: augmented reality , virtual laboratory, buffer solution practicum, android-based media, multiple representations Share Link | Plain Format | Corresponding Author (Sari Sari)

107	Chemistry Education	ABS-386
Integrating Of Education For Sustainable Development To Teaching Learning Sequence Of Water Treatment Using Chitosan As Natural Coagulant: Results From Qualitative Content Analysis Cita Rachmi Andini (a*), Hernani (a), Fitri Khoerunnisa (a) Institution a) Department of Chemistry Education, Indonesia University of Education, Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia Abstract Chitosan is a chitin-derived compound that is mostly produced by animals such as the exoskeleton shells of arthropods (crabs, shrimps, lobsters). Chitosan is formed by deacetylation of chitin using strong alkali at high temperature. The content of active amine groups in chitosan is widely used as an alternative natural coagulant that is environmentally friendly, so that it can be integrated into learning about the concept of sustainability. This study aims to produce concept maps and Teaching Learning Sequences (TLS) based on scientists^ conceptions of the concept of sustainability on the topic of water treatment using natural coagulants. The method used in this research is qualitative content analysis. The research instruments used include content analysis formats and sustainability aspects. The content analysis process includes: 1) literature collection, 2) descriptive analysis, 3) category selection, and 4) material evaluation with didactic aspects. This research produces concept maps and TLS that can describe the relationship of the context of water treatment using natural coagulants with colloid content and TLS related to continuing education in the form of learning about water treatment using natural coagulants from chitosan. The concept map and TLS that have been compiled show the relationship between mapping aspects of scientific literacy and the relationship with the concept of sustainability as an environmentally friendly alternative material on colloid content in the context of water treatment using natural coagulants. The research results can be used as a basis for developing teaching materials and didactic designs. Keywords: Teaching Learning Sequences (TLS)- education for Sustainable development- chitosan- natural coagulant- water treatment Share Link | Plain Format | Corresponding Author (Cita Rachmi Andini)

108	Chemistry Education	ABS-132
Development of Mathematics for Chemistry Textbook Based on Flipbook as Alternative Learning Resources Kriesna Kharisma Purwanto, Fitroh Resmi Universitas Billfath Abstract The Mathematics for Chemistry course is a basic course that studies about algorithmic concepts in chemistry. Based on the results of initial observations, students have difficulty in learning Mathematics for Chemistry. This is indicated by the low average score of students for the last 5 years were 57.78- 64.35- 64.81- 68.6 and 68.75. From the results of the questionnaire, it is also known that during face-to-face learning, students experience learning difficulties due to lack of time, lack of difficult questions, in understanding the material, less thorough in working on questions, student internal factors and difficulty understanding the reference books used, so students need math reference books. which directly refers to applications in chemical concepts. This development research aims to produce Mathematics for Chemistry textbook based on flipbook that can be used as alternative learning resources in Mathematics for Chemistry course. The development model used is the 4D Thiagarajan model with 4 (four) stages, namely define, design, develop, and disseminate. However, in this study, the development stage is only limited to the develop stage. The results of developing flipbook-based Mathematics for Chemistry textbooks include (1) flipbook-based textbooks packaged in EXE., (2) content/material validity level was 90% (very valid), (3) media validity (design) level was 91.25% (very valid), (4) practicality level was 88% (very high), and (5) readability level was 89% (very high). Keywords: textbook development- mathematics for chemistry- flipbook- learning resources Share Link | Plain Format | Corresponding Author (Kriesna Kharisma Purwanto)

109	Chemistry Education	ABS-135
Implementation of The Scrum Methodology in Chemistry Learning to Improve Scientific Literacy: A Review Nurlaila Hayati (a*), Asep Kadarohman (a), Wahyu Sopandi (a), Muhamad Abdulkadir Martoprawiro (b) a) Faculty of Mathematics and Natural Science Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudi 229, Bandung 40132, Indonesia *nurlailahayati[at]upi.edu b) Faculty of Mathematics and Natural Science, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia Abstract This study aims to review the literature in the form of scientific articles published in international journals related to the scrum methodology and scientific literacy. In addition, the implementation of a relatively new learning methodology in chemistry learning, namely the scrum methodology that can improve scientific literacy is also discussed. This review uses articles in Q1 and Q2 categories based on Scimago Journal & Country Rank data. Research data was collected through review the articles with the following stages: determining the topic, searching the articles, identifying of main ideas, making outline, and synthesis the article review. The year of publication of the articles is limited from 2017 to 2021 to ensure the novelty of the topic. The research data were analyzed descriptively. The results showed that: 1) the scrum methodology could be implemented in chemistry learning- 2) the scrum methodology makes student-centered learning- 3) the context used in the scrum methodology is a problem and phenomenon that occurs in everyday life- 4) components in the scrum methodology consist of sprints, roles, and artefacts- 5) the description of scientific literacy in chemistry learning- 6) the scrum methodology can improve scientific literacy. Keywords: Scrum Methodology, Scientific Literacy, Chemistry Learning Share Link | Plain Format | Corresponding Author (Nurlaila Hayati)

110	Chemistry Education	ABS-137
Review of Chemistry Learning Strategy Based on Process Oriented Guided Inquiry Learning (POGIL) Mela Ripa Jummaro, Sri Mulyani, Tuszie Widhiyanti, Wiji The Education University (Universitas Pendidikan Indonesia) Abstract This study aims to review the application of Process Oriented Guided Inquiry Learning (POGIL)-based chemistry learning strategies through the analysis of reputable international journal documents between 2012 - 2022. The results of the analysis show that POGIL-based chemistry learning strategies applied to college student and high school student can improve learning achievement, self-efficacy, critical thinking, problem solving, science process skills, representational abilities, multiple intelligences and other skills. The chemical materials presented are basic chemistry, organic chemistry, physical chemistry, biochemistry and inorganic chemistry. In addition, several researchers used the POGIL syntax at different stages from the original idea of Moog and Spencer (2008) because the design of POGIL activities adapted to the skills to be improved. Furthermore, there are limitations to the application of POGIL-based chemistry learning strategies which require more time to implement. Keywords: Learning Strategy, Process Oriented Guided Inquiry Learning (POGIL) Share Link | Plain Format | Corresponding Author (Mela Ripa Jummaro)

111	Chemistry Education	ABS-142
A Framework for Developing and Validating Virtual Test to Assess Science Process Skills in Chemistry Nurul Amali (a*), Nahadi (a), and Harry Firman (a) a) Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budi No. 229, Bandung 40154, Indonesia *nurulamali[at]upi.edu Abstract Technological advancements and the demands of pandemic conditions around the world have forced educators to think of solutions in the teaching and learning process so that there are no obstacles, including in the assessment process. Although the focus of learning assessment in Indonesia focuses on literacy and numeracy assessment, the assessment of science process skills is still carried out because the science process skills are the core key to developing children^s knowledge in science, including chemistry. The current assessment process uses more online platforms or is done using virtual tests. The study aims to describe the importance of virtual tests as an innovation in assessing science process skills and explain the design of appropriate virtual tests on chemistry learning to assess the science process skills. The method used is a literature review, which collects journal articles in accordance with the theme, and then the journal article is given a review and arranged into several discussion sections. The result of the literature review that has been conducted is a virtual test design framework that is suitable for assessing science process skills on chemistry. Discussions include an overview of virtual tests, assessing the skills of chemical-specific science processes with virtual tests and how the virtual test design framework assesses science process skills on chemistry that qualify on assessment characteristics (validation, reliability, objectivity, and practicality). Keywords: Virtual Test- e-assessment- Science Process Skills- Share Link | Plain Format | Corresponding Author (Nurul Amali)

112	Chemistry Education	ABS-145
Formative Assessment with Think-Pair-Share Method and Feedback in Chemistry: A Literature Review Ulfah Fauziah Sukmawati (a*), Nahadi(a), Harry Firman(a) Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia *ulfahfauziahsukmawati[at]upi.edu Abstract Formative assessment provides to support teaching and learning in the classroom. Think-Pair-Share is a formative assessment strategy engages the entire classroom and provides continuous feedback to both teacher and student. Feedback is an essential part, which leads to learning gains. Buffer solution material consists of learning theory, concepts, and experiments in the laboratory, its potential for implementing formative assessment with think-pair-share method. This study aims to obtain an overview formative assessment with think- pair-share method and feedback in chemistry. This study used a literature study with a literature review approach. Based on the literature study, the paper systematically elaborates for formative assessment with think- pair-share method and feedback which includes concepts, methods, processes, and tools. Hope in the future formative assessment with think-pair-share method and feedback be a useful learning for teachers especially in chemistry learning. Keywords: Formative Assessment, Think Pair Share, Feedback Share Link | Plain Format | Corresponding Author (Ulfah Fauziah Sukmawati)

113	Chemistry Education	ABS-150
Framework for Implementing e-Portfolio Assessment to Improve Habits of Mind and Mastery of Chemistry Concepts Ilham Mahardika (a*), Nahadi (a), dan Harry Firman (a) a) Departement of Chemistry Education, Indonesia University of Education, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia *ilhammahardika[at]upi.edu Abstract The COVID-19 pandemic emphasizes the need to improve teachers^ online teaching skills. One of them is the skill of using electronic portfolio assessment. Electronic portfolio assessment as an alternative assessment does not only focus on cognitive aspects. This idea is in line with the regulations of the ministry of education regarding the assessment of learning outcomes that focus not only on cognitive aspects but also on aspects of skills and attitudes. This article outlines a framework for electronic portfolio assessment to improve students^ habits of mind and mastery of chemical concepts. This framework offers chemistry teachers a model for systematically designing and implementing an electronic portfolio of assessments and provides them with the instrumens to conduct further research on assessment techniques. This framework guides chemistry teachers through important technical decisions, such as setting goals, identifying clear goals and establishing meaningful criteria for electronic portfolio assessment. Other issues discussed include defining the content of the electronic portfolio, managing the electronic portfolio, monitoring and evaluating processes. Keywords: Electronic portfolio, Assessment, Habits of mind, Mastery of chemistry concept Share Link | Plain Format | Corresponding Author (Ilham Mahardika)

114	Chemistry Education	ABS-152
Learning Motivation and Concept Difficulties in School Chemistry (Chemical Bonding) Analisis toward Developing Student Learning Materials Asmadi M. Noer, Besse Wahdatillah, Lenny Anwar University of Riau Abstract Learning motivation and understanding of concepts are important aspects of the learning process. This study aims to analyze the learning motivation and understanding of the concepts of high school/MA class XI students on chemical bonds, molecular shapes and intermolecular interactions. The sampling technique in this study used purposive sampling. The research sample consisted of three SMA/MA in Pekanbaru, namely MAN 1 Pekanbaru, SMAN 2 Pekanbaru and SMAIT Al-Fityah Pekanbaru. The participants in this study were 42 students of class XI consisting of the three schools. Assessment of learning motivation questionnaire based on the Guttman scale. The test questions for conceptual understanding of chemical bonds, molecular shapes and interactions between molecules are in the form of multiple choice questions with choices A, B, C, D and E. The instruments are arranged according to the indicators of understanding the concepts and materials. Data has been collected using Google Forms. The results showed that the students^ motivation to learn chemistry was still low, namely 49.5%. Understanding of students^ concepts on the material of chemical bonds, molecular shapes and molecular interactions is still relatively low with an average percentage of 31.7%. Keywords: learning motivation, concept understanding, chemistry Share Link | Plain Format | Corresponding Author (Asmadi M Noer)

115	Chemistry Education	ABS-411
Content Analysis of Chemistry Textbooks on Thermochemistry Chapter for Chemical Literacy Marfuatun(a*), Galuh Yuliani (b), Nahadi (b) a)Doctoral Programme of Natural Sciences Education, Faculty of Mathematics and Natural Sciences, Universitas Pendidikan Indonesia *afu[at]uny.ac.id b)Chemistry Education Department, Faculty of Mathematics and Natural Sciences Education, Universitas Pendidikan Indonesia Abstract This study aims at analyzing the aspects of chemical literacy in the general chemistry textbook on thermochemistry chapter. We review three general chemistry textbooks commonly used in basic chemistry courses. This study used a qualitative approach by content analysis. The focus of this study is the thermochemistry chapter because this topic is considered to be abstract by students. Data analysis was carried out descriptively by combining similar data within the chemical literacy framework. The analysis results indicated that the three textbooks fulfill most of the chemical content knowledge indicators, except for chemistry as an experimental discipline. On the aspect of chemistry in context, the textbooks provide insights that chemistry can be used to explain phenomena in everyday life, to make decisions and participate in social debates on chemistry-related issues, and to understand the relationship between innovations in chemistry and sociological processes. The textbooks also present knowledge that can encourage the enhancement of high-order learning skills, particularly in the review problems section. Keywords: chemistry, textbook, thermochemistry, chemical literacy Share Link | Plain Format | Corresponding Author (Marfuatun -)

116	Chemistry Education	ABS-159
Development of Multiple Representation-based Electronic Teaching Materials Using Guided Inquiry on Acid-Base Topic Isni Nurani (a*), Suyanta (b) a) Master Program of Chemistry Education, Universitas Negeri Yogyakarta, Indonesia *isninurani.2020[at]student.uny.ac.id b) Department of Chemistry Education, Universitas Negeri Yogyakarta, Indonesia Abstract This study aims to develop and determine the feasibility of multiple representation-based electronic teaching materials using a guided inquiry model on the topic of acid and base for class XI high school. The method used in this research is research and development (R & D) which was developed by Thiagarajan and known as the 4D model. The 4D model consists of four stages: define, design, develop, and disseminate. This study is only up to the develop stage for teaching materials^ readability test. This research instrument is a questionnaire to obtain a quantitative score used to determine the feasibility of teaching materials. The study results indicate that the developed teaching materials have a very good feasibility percentage. The assessment categories obtained from expert validation and teachers are very good with an average assessment percentage of 96.00% and 86.75%, respectively. The limited trial response from a small group of students showed that the teaching materials developed were classified as very good with an average percentage of 88.50%. Based on the validation and readability test results, the developed electronic teaching materials are feasible for use in class XI chemistry learning on the acid-base topic. Keywords: electronic teaching materials- guided inquiry- multiple representation Share Link | Plain Format | Corresponding Author (Isni Nurani)

117	Chemistry Education	ABS-437
Content Analysis of Research Regarding Learning Approaches in the Context of Socio Scientifice Issues in Chemistry Learning Zulkhairi, Momo Rosbiono, Hernani Department of Chemistry Education, Faculty of Mathematics and Natural Sciences Education Indonesian Education University Abstract This article aims to describe research on learning approaches in the context of socio scientific issues from 2016 to 2022. The method used is descriptive content analysis method to analyze 30 journal articles of national and international repute regarding learning in the context of socio scientific issues in chemistry learning. The variables to be analyzed include the method, purpose, year of publication, region, sample, data collection tools, and data analysis techniques. Most of the research aims to improve student learning outcomes, interest and motivation to learn. Most of the research methods applied are qualitative and quantitative methods using the experimental class and control class and a small portion using the R&D/Development method. The instruments used were questionnaires, observation sheets and interviews. The data analysis technique used is quantitative analysis technique using statistics (ancova, manova, t-test) and qualitative data analysis. Most of the samples consist of students and undergraduate students, a small part consists of teachers. This research is spread across Europe, the United States and Asia with the most publication year being 2021. The issues raised are health and environmental issues related to organic chemistry and environmental chemistry. The most published articles are the Journal of Chemical Education (JCE) and Journal Science Education (JSE) with the publication years 2021 and 2019. Keywords: Socio Scientific Issues, Chemistry Learning, Learning difficulties, Scientific Literacy Critical Thinking Skills. Share Link | Plain Format | Corresponding Author (Zulkhairi -)

118	Chemistry Education	ABS-186
DIGITAL COMPETENCE OF SCIENCE TEACHERS IN TERMS OF GENDER, LENGTH OF WORK, AND SCHOOL LEVELS OF TEACHING Kartimi (a*), Onwardono Rit Riyanto (b) (a,b) IAIN Syekh Nurjati Cirebon, Faculty of Tarbiyah and Teacher Training Perjuangan Street of Sunyaragi, Cirebon City, West Java, Indonesia 45132 *kartimi.iain[at]gmail.com Abstract Technological development in education should be balanced with digital competencies to create optimal education. This development has increased during the pandemic that requires teachers to master digital competence to organize education for students. This study aims to determine the digital competence of science teachers and investigate differences in three factors: gender, length of work, and school levels of teaching. This study employed a cross-sectional survey and involved 105 science teachers in West Java Province, Indonesia. Online questionnaires were employed to collect the data. This research has revealed that science teachers have different digital competence in terms of school level. In contrast, they do not have divergent digital competence in terms of gender and length of work. Keywords: digital competence- education- science teachers Share Link | Plain Format | Corresponding Author (Kartimi Kartimi)

119	Chemistry Education	ABS-189
A Systematic Literature Review : Context Development on Chemistry Teaching and Learning Materials at Secondary School Triana Krisandini(a*) , Sjaeful Anwar(b) a) Master Program of Chemistry Education, Universitas Pendidikan Indonesia, Jl. Setia Budhi No. 229, Bandung 40154, Indonesia *trianakrisan18[at]gmail.com b) Departemen of Chemistry Education, Universitas Pendidikan Indonesia, Jl. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract The development of teaching and learning materials is one of the considerable research carried out, especially in the development of chemistry teaching and learning materials for secondary school which is conducted to support an improvement in learning process. This study aims to analyzed context development of chemistry teaching and learning materials both in context of content and context of pedagogy. The research method used was a systematic literature review. From 2015 to 2021 there are 51 relevant articles of teaching and learning materials development in chemistry for secondary school that analyzed. The findings show that the development in context of content and pedagogy in chemistry teaching and learning materials is varied. However, there are certain topics in chemistry that oft to developed such as acid-base and chemical equilibrium, meanwhile top four context of pedagogy that oft to used in developing chemistry teaching and learning materials are ICT, PBL, Guided inquiry and Contextual. The researcher recommend the continuity of context development on chemistry teaching and learning materials that can construct 21st century skills (Critical Thinking, Communication, Collaboration and Creativity). Keywords: Context development- Teaching materials- Chemistry education- Systematic review Share Link | Plain Format | Corresponding Author (Triana Krisandini)

120	Chemistry Education	ABS-450
Development Of Assessment Instruments To Measure Scientific Performance Ega Hidayani (a), Ida Farida (a), dan Risa Rahmawati Sunarya (a)* (a) Program Studi Pendidikan Kimia, Jurusan Pendidikan MIPA, Fakultas Tarbiyah dan Keguruan, Universitas Islam Negeri Sunan Gunung Djati Bandung *Email:E-mail: risarahmawatis[at]uinsgd.ac.id Abstract One of the assessment instruments that can be used to assess the achievement of competence and process skills in practicum activities is performance assessment instruments. The instrument for assessing scientific performance in experimental analysis of ZnO content in loose powder is needed. The purposes of this study were to describe the appearance of the instrument for assessing scientific performance (experimental worksheets) and student performance assessment sheets and to analyze the results of the validation test of the two instruments. This research uses the Design Based Research (DBR) method with the stages of analysis and product design development to validation tests for lecturers who are experts in chemistry and learning media. Based on the data from the validation test results to expert lecturers, valid worksheets and performance appraisals were obtained with rcount 0.838 and 0.846 respectively. Keywords: scientific performance, assessment instrument Share Link | Plain Format | Corresponding Author (Risa Rahmawati Sunarya)

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