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271	Science Education	ABS-89
The profile of science teachers competence in learning practices using technological devices R A H A Permana, A Widodo, W Setiawan, and S Sriyati LPMP Banten School of Postgraduate Indonesia University of Education Abstract Teacher assessment is part of the evaluation and improvement process of teacher competence. Accurate assessment will be an appropriate basis for developing competency improvement programs. This research is aimed at getting a picture of the knowledge of science teachers in applying learning using technological devices. A descriptive analysis research method was used. The test result data were obtained from 100 science teachers in Banten Province who answered the questions online as the sample. The research instruments consisted of 10 essay questions and a scoring rubric for the assessment. Test questions cover aspects of the application of learning methods, learning media, learning resources, assessments, and student learning outcomes. The Cronbach instrument reliability coefficient value is 0.7. The average score of the test-takers in this research was 29.90 with a standard deviation of 17.31. Based on the categorization of the assessment results, the scores of the subjects were distributed as follows: 1% of the good category, 10% of the fair category, 40% of the poor category, and 49% of the very poor category. The analysis of the items indicates that the most difficult problems to be answered are the questions about learning methods and student learning outcomes. Keywords: teachers assessment, technological device, essay question, science teacher knowledge Share Link | Plain Format | Corresponding Author (Raden Ahmad Hadian Adhy Permana)

272	Science Education	ABS-90
CONTENT OF ASCORBIC ACID AND CAROTENOID OF TOMATO CALLUS WITH DIFFERENCES IN EXPLANT AND SUBCULTURES TREATMENT Imam Purwato1, Yulita Nurchayati *2, Rini Budihastuti3, Erma Prihastanti Universitas Diponegoro, Semarang Indonesia Abstract Tomato (Lycopersicon esculentum Mill.) is a vegetable and fruit that contain ascorbic acid and carotenoids. The conventional production of these two compounds requires a lot of biomass. One of the methods to produce these two compounds is through a callus culture. The objectives of this study were to examine the factor of explant differences and culture maintenance toward the growth of callus, the antioxidant content of ascorbic acid and carotenoids content of tomato callus. The stage of this study included in vitro germination or tomato seeds, callus induction in MS with addition 2,4-D media and subculture. The study design used a completely randomized design (CRD) of two factors, the first factor was explant the type (cotyledons, hypocotyl and root sprouts) and the second factor was subculture treatment. The parameters observed were fresh weight of callus, carotenoid content and ascorbic acid content in each callus. The results shows that the different subculture treatments and explant sources affected the fresh weight of callus. The highest callus weight (0.29 g) was obtained from the hypocotyl explant callus. Subculture treatments also affect the content of ascorbic acid, but subculture treatments did not affect the carotenoid content of all explant sources. Callus from cotyledon explants produced the highest ascorbic acid content of 15.2 g / 100 g. Subculture treatment increased the fresh weight of callus (303.3%), carotenoid content (5.9%) and ascorbic acid (369.8%) compared without subculture treatment. The best source of explants to increase biomass is hypocotyl, while the best for the production of antioxidant compounds is cotyledon Keywords: Lycopersicon esculentum, Callus, Cotyledons, Hypocotyls, Secondary metabolites Share Link | Plain Format | Corresponding Author (Yulita Nurchayati)

273	Science Education	ABS-100
Investigating junior high school students perception of global warming topic using semantic network analysis A R Pratami (a*), L S Riza (b) and L Rusyati (a) a) International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia b) Department of Computer Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia Abstract Understanding how students perceive global warming concept is important for their metacognition. A total of 241 junior high school students including all grades were involved in this research. With an open-ended question, this research identified students perception of global warming concept. Semantic network analysis was chosen as the method to determined and displayed students perception by checking the connection of the words used to response the open-ended question. After the process of analysis, there were there main statements from students to define global warming: (1) Increase of earth temperature, (2) depletion of ozone layer, and (3) greenhouse gas and human activities as the cause of global warming. The result of this research can be used to develop the teaching method which can motivate the students^ scientific thinking. Keywords: students perception- global warming topic- semantic network analysis Share Link | Plain Format | Corresponding Author (Almira Rizky Pratami)

274	Science Education	ABS-102
A Case Study of Scientific Literacy in Natural Science Subject using Rasch Analysis Model (RAM) Nadia Mubarokah (a), Anna Permanasari (b), Eliyawati (a*) a) International Program on Science Education Study Program, Universitas Pendidikan Indonesia, Jalan Dr Setiabudhi No 229, Bandung 40154, Indonesia *eliyawati[at]upi.edu b) Department of Chemistry Education, Universitas Pendidikan Indonesia, Jalan Dr Setiabudhi No 229, Bandung 40154, Indonesia Abstract The study aims to analyze the scientific literacy of junior high school students in Natural Science subjects. The study used a case study method. There were 70 students of IX grade in a private junior high school in West Bandung Regency. Respondents consisted of 40 boys and 30 girls with an average age of 15 years old. The instrument used was a written test consisting of 30 simple multiple-choice questions for three aspects of scientific literacy, which were scientific knowledge, scientific competencies, and attitudes toward science. The data analysis used Rasch Analysis Model (RAM) and assisted by Winsteps 4.4.5. The results being discussed are the person and item reliability, variable maps, and differential item functioning (DIF). The results show that the average scientific literacy ability of students falls into the low category, and some questions have gender biases. Thus, scientific literacy needs to be promoted and involved effectively in teaching-learning activities to get students used to the scientific literacy environment in their learning programs during school years. Keywords: Scientific literacy- Natural science subject- Rasch Analysis Model Share Link | Plain Format | Corresponding Author (Nadia Mubarokah)

275	Science Education	ABS-104
Global warming topic towards junior high school students^ environtmental awareness Rizal Maulana Fikri (a*), Yayan Sanjaya (b), Lilit Rusyati (a) a) International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia *rmaulanafikri[at]gmail.com b) Department of Biology Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia Abstract As we already know that the biggest issue that is faced by us is global warming. School-based education plays an important role in improving the attitude and knowledge of students, and it has been pointed out that the potential effectiveness of education is higher when students have knowledge and a positive attitude toward global warming issues. With the questionnaire distributed virtually which cosistst of 28 statements and total 428 students of junior high school from all grade involved,it leads to the aims of this study which is to analyze how the issue of global warming affect the nvirontmental awarness of the students at junior high school level across all grades. After the process of analysis,there were difference result for the awareness for the conceptual of the environmental issue, the pratice of solving the enivrontmental issue, and higher degree comitment for the environtmental issue. The finding of this study could be visualization of the condition of our students towrads the environtmental issue especially global warming issue Keywords: Global warming topic- Students^ Environtmental Awareness Share Link | Plain Format | Corresponding Author (Rizal Maulana Fikri)

276	Science Education	ABS-112
Analyzing the science misconception in mastery concept of ecosystem topic at senior high school Sulistinayah Suwaka Putri (a*), Lilit Rusyati (a) International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to determine the percentage of biology misconceptions especially in ecosystem topics at senior high school. Ecosystem topics are basic in science. But, there are still many students was get difficulties in understanding the concept, that causing misconceptions. A misconception is an explanation of the phenomenon according to the experience and student^s previous knowledge. This study used a descriptive statistics method. Profiling data was used to describe the percentage of mastery concept students and misconceptions. Multiple-Choice tests were chosen to measure the understanding of concept mastery and misconceptions in ecosystem topics. The results have shown the average of percentage in mastering conception is 58.65%, while the average percentage of misconception is 41.01%. It means misconceptions that are inversely proportional to the understanding of student concepts. Therefore, to reduce the misconceptions that emerge a needed an improved understanding of the concept. Keywords: Misconception- Mastery concept- Ecosystem topic Share Link | Plain Format | Corresponding Author (Sulistinayah Suwaka Putri)

277	Science Education	ABS-120
Analysis of the Need for Development of Process Oriented Guided Inquiry Learning (Pogil) Learning Tools in Natural Science Learning in Junior High Schools D Fatmawati (a)*, Sajidan (b), and NY Indriyanti (c) 1Program Studi Magister Pendidikan Sains, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Sebelas Maret, Jl. Ir. Sutami No.36, Kentingan, Kec. Jebres, Kota Surakarta 57126, Indonesia 2Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sebelas Maret Jl. Ir. Sutami No.36, Kentingan, Kec. Jebres, Kota Surakarta 57126, Indonesia 3Program Studi Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sebelas Maret Jl. Ir. Sutami No.36, Kentingan, Kec. Jebres, Kota Surakarta 57126, Indonesia Abstract This study aims to analyze the needs of developing science oriented process learning guided inquiry (Pogil) learning tools in junior high schools. The study population included state junior high schools in Surakarta district in the 2019/2020 school year. The research sample was determined by purposive sampling technique by considering, school status, UN scores. The number of sample schools was 3, each from medium and low high schools in Surakarta. Research data collected by interview, observation. And analyzed descriptively. The results showed: Schools face several obstacles and constraints namely limited operational support, and the transfer of laboratory functions into classrooms Keywords: Needs Analysis, Process Oriented Guided Inquiry Learning (Pogil) Learning, And Science Share Link | Plain Format | Corresponding Author (Dewi Fatmawati)

278	Science Education	ABS-122
Devolepment of Science Textbooks Integrated the Local Potential Bakpia Food for Junior High Student W M Nisa, and I Wilujeng Yogyakarta State University Abstract This study aims to (1) determine the feasibility of developing science textbooks integrated the local potential of bakpia food for junior high school students on substance material and its characteristics by expert validators- (2) knowing the results of the readability test of teacher^s book products by junior high school teachers and student books by junior high school students. This study uses a modification of the 4D Thiagarajan development model define, design, develop, and disseminate. However, this development is carried out until the develop stage. At the development stage, the product is validated by a material expert validator and a media expert validator. In the test phase readability test, the readability test was conducted by three junior high school teachers and fifteen junior high school students. Data were collected using a validation questionnaire instrument and a readability test questionnaire. Technical analysis of data using quantitative descriptive percentage analysis. The results showed that the feasibility of the material was 81.25% with very good criteria, the percentage of eligibility for teacher books was 91.67% with very good criteria, and the feasibility of student books was 88.89% with very good criteria. The percentage of readability test results by the science teacher was 96.35% with very good criteria, and the percentage of readability tests by middle school students was 85.67% with very good criteria. as a whole the science textbook integrated the local potential of bakpia can be used in the science learning process. Keywords: Potential Local, Science Textbook, Bakpia Food Share Link | Plain Format | Corresponding Author (Wilda Muhimmatun Nisa)

279	Science Education	ABS-130
Test Item Analysis of Students^ Written Scientific Argumentation Skills in Learning Energy Resources Topic using the Rasch Model Lina Christina (a), Nuryani Y. Rustaman (b), E Eliyawati (a*) a) International Program on Science Education Study Program, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia b) Departement of Biology Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract The purpose of this study is to analyze students^ written scientific argumentation skills instrument using the Rasch Model in terms of validity, reliability, item difficulty, and biased items. The method used was descriptive quantitative with 50 junior high school students consisting of 18 female students and 32 male students from international private junior high school in Bandung. The instrument used in this research consisted of three essay questions. The results show that- 1) Two questions are valid and considered as appropriate to be used, however, one question needs to be revised, 2) Reliability of person .73 means sufficient, reliability of item .81 means good, and reliability between the person and item .62 is sufficient, and 3) Question number 1 is considered as the hardest item for the difficulty level and Question number 2 becomes the easiest question. From these questions, there are no questions that have probabilities of less than 5%. Thus, there are no items that have biases toward gender. In conclusion, the item analysis of instrument for written scientific argumentation of students using the Rasch Model is valid, reliable, the complexity of the item is good, and there are no biases. Keywords: Scientific argumentation skills- Energy resources topic- Rasch Model- Share Link | Plain Format | Corresponding Author (Lina Christina)

280	Science Education	ABS-132
A Rasch Model Measurement Analysis on Students^ Concept Mastery in Food Additives Topic W A Putri (a), Y Sanjaya (b), E Eliyawati (a*) a. International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia *eliyawati[at]upi.edu b. Departement of Biology Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung, 40154, Indonesia Abstract The students^ concept mastery is low in food additives topic in junior high school level. This study aims to analyze students^ concept mastery by using Rasch Model. The participants involved 70 students of grade VIII and IX grades, consist of 30 boys and 40 girls. Result was shown from students have already studied food additives topic. The item is comprised of 30 multiple-choice questions. Data analyzed on person-reliability, item-reliability, and wright map. The findings showed that Cronbach-α was 0.69 (sufficient), item-reliability was 0.92 (excellent), and the person-reliability was 0.65 (weak). It shows that interaction between students and items were sufficient, so the items can be used for students. Thus, most students could answer food additives questions. For better result, the researcher should make difficult item. Keywords: Rasch Model, Concept Mastery, Food Additives Share Link | Plain Format | Corresponding Author (Weni Anissa Putri)

281	Science Education	ABS-145
The use of science content music as teaching media towards students^ content mastery in learning solar system Regina Nur Luthfiah(1)*, Selly Feranie(2), and Lilit Rusyati(1) (1) International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia *regina_nlf[at]student.upi.edu (2) Department of Physics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia Abstract Meaningful learning could be reached according to the media used then the variety of teaching media is very important so the learning activity wouldn^t be monotonous. In response to this problem, it is necessary to attempt improvement and innovation in the learning process. Recognizing the power of music nowadays, the author tries to dig up information about how effective the implementation of science content music as teaching media to improve students^ concept mastery. In order to investigate the result, the method that used in this study is a weak experiment with one group pre-test and post-test design. According to the result, application of science content music has a significant effect on students^ concept mastery, so science content music can be considered as an alternative teaching media that can be implemented in Junior Secondary Schools. Keywords: Teaching media- Content mastery- Science content music Share Link | Plain Format | Corresponding Author (Regina Nur Luthfiah)

282	Science Education	ABS-149
Identification of students^ misconception in cell at first grade of senior high school A F A Suhel and L Rusyati Universitas Pendidikan Indonesia Abstract This study aims to identify the misconception of the student in biology learning especially in type of cells and their common characteristics at senior high school level. By using descriptive statistics research method, the data were collected from 31 first grade students (15-16-year old). Instruments included a test in the form of written test. The result of the test has been obtained, then processed by analyzing the students^ answers for each item. The results showed that students^ understanding in type of cells and their common characteristics has experienced misconception. So, we can say that cell concept in first grade student in senior high school still low. At the end, the impact can make most of senior high school students think that learning about cell in biology is difficult. Keywords: Misconception, Senior High School, Cell, AAS Assessment Share Link | Plain Format | Corresponding Author (Arlieza Fazla Aulina Suhel)

283	Science Education	ABS-167
Enhancing students communication skill by creating infographics using genially in learning climate change Dyantie Nur Azizah (a*), Nuryani Y Rustaman (b), Lilit Rusyati (a) a) International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia *dyantieazizah[at]student.upi.edu b) Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract This study is aiming to investigate students^ communication skill in terms of verbal and visual on learning climate change topic as a socio-scientific issue. The communication skill attainment was assessed by incorporating infographics generated using Genially website. The research was conducted due to its significant role of the skill for students to become empowered global citizens in 21st century that requires the ability to communicate information to be easily understood and perceived concisely by the audience. The research method used is one group pre-post- test to investigate the enhancement of students^ ability before and after the experimental treatment. The research involved 50 students from one of the secondary schools in Cimahi. The result shows that students are better at communicating verbally (2.3625 average points) rather than visually (2.08125 average points). Further research needs to conduct with more concern on data collection methods and the improvement of instruments being used to assess the skill. Keywords: Communication skill- Infographic- Climate change Share Link | Plain Format | Corresponding Author (Dyantie Nur Azizah)

284	Science Education	ABS-181
Analysis of critical thinking skills through the provision of mini project assignments on microbiology learning during the COVID 19 pandemic Supiana Dian Nurtjahyani1*, Liska Diah Pratiwi2,Sukisno3 Universitas PGRI Ronggolawe Tuban Abstract Covid 19 pandemic has colored a new order of learning in Higher Education, from conventional learning towards online and offline learning. Learning in Higher Education is expected to improve students^ critical thinking skills. Learning microbiology that the material is learned about microorganisms so it needs analysis of thinking skills, so with a contextual-based approach. The assignment of a mini research project as an alternative to improve critical thinking skills. The purpose of this study was to analyze the critical thinking skills of students giving mini research project assignments on microbiology learning during the 19th COVID pandemic. The method in this study was descriptive qualitative. The results showed students^ critical thinking skills in the ability to identify and the ability to evaluate very well a number of 11 students (100%) got a score of 4 (the highest score) while the ability to link a number of 9 (81.82%). Conclusions in the research assignment of mini research projects could improve critical thinking in the ability to identify and evaluate problems in the category is very good. Keywords: Critical thinking- project mini riset- microbiology Share Link | Plain Format | Corresponding Author (Supiana Dian Nurtjahyani)

285	Science Education	ABS-199
The Effect of Multiple Intelligence Theory Based Teaching towards Students Achievement on Electrical Circuit Topic Siti Kalimaya(a*), Selly Feranie (b), and Rika Rafikah Agustin (a) a) International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung, 40154, Indonesia *sitikalimaya[at]student.upi.edu b) Departemen Fisika,Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung, 40154, Indonesia Abstract The research aims to identify the effect of implementing multiple intelligence theory based teaching towards students achievement on electrical circuit topic. Totally 66 of 8th grade junior high school students were selected through convenience sampling technique as experimental group subjects of this research. The experimental group was instructed to learn through multiple intelligence theory based teaching as the treatment in learning electrical circuit topic. This experimental study lasted for 6 meetings in 6 weeks and conducted using one group pre-test and post-test design. To see the effect of the treatment on students achievement, an achievement test about electrical circuit topic which consisted of 24 items was distributed and analyzed using SPSS. The result showed that normalized gain value was 0.28 which categorized as a low improvement. In other word, students achievement on electrical circuit topic improved after being taught by multiple intelligence theory based teaching. Keywords: Multiple Intelligence Theory, Students Achievement, Electrical Circuit Topic Share Link | Plain Format | Corresponding Author (Siti Kalimaya)

286	Science Education	ABS-200
Analysis of Teacher^s Ability in Planning and Implementing Learning on Vibration, Wave and Sound Submaterials Nurul Alviani Azizah1*, Sukarmin Sukarmin2, Mohammad Masykuri3 Universitas Sebelas Maret Abstract Submaterial vibration, waves and sound in junior high school science learning has high complexity. Teachers must not only master the material, but also they must be able to plan and implement the learning process. This study aims to analyze the ability of teachers to plan and implement learning on vibration, wave and sound material. This research is descriptive with a qualitative approach. The data collection techniques involved assessment of the lesson plans and observation of learning implementation to obtain the primary data. The secondary data are sourced from lesson plans, teacher and student interviews. Data were qualitative analyzed. Based on the analysis of the learning process shows that (1) the ability of teachers to make lesson plans in terms of format in accordance with aspects of the assessment of IPKG-1 with a score of 79.97% in the category is quite good. Lesser lesson planning indicators include learning objectives, methods, and procedures. learning plan (RPP) is not in accordance with the syllabus (2) the ability of teachers to apply is in accordance with aspects of the assessment of IPKG-2 with a score of learning implementation of 79.5% in the good enough category. Indicators of poor learning implementation are directing students to 21st century skills and lack of application of basic competencies Keywords: lesson plan, learning process, vibration, wave, sound. Share Link | Plain Format | Corresponding Author (Nurul Alviani Azizah)

287	Science Education	ABS-202
Online Science Learning Strategies: Challenges and Benefits E Eliyawati (a*), Anna Permanasari (b), Arsanti Satriani Salim (a), Salma Khoirotunnisa (a) (a) International Program on Science Education Study Program, Universitas Pendidikan Indonesia, Dr Setia Budhi Street No. 229, Bandung 40154, Indonesia *eliyawati[at]upi.edu (b) Department of Chemistry Education, Universitas Pendidikan Indonesia, Dr Setia Budhi Street No. 229, Bandung 40154, Indonesia Abstract Covid-19 is one pandemic that influences all sectors in the world, including the educational system for learning science. To overcome this situation, most of the school conduct online learning. This study aims to investigate the challenges and benefits of some online learning, such as virtual laboratories, webcomic, and game-based learning, and to find a more beneficial strategy. The literature review by using secondary data analysis was performed to identify the patterns an existing data and make interpretation from twenty-seven articles both from the Indonesian and International journals. Each article was synthesized and analyzed to result in which strategy is more beneficial. The results show that virtual lab and game-based learning are an attractive strategy to enhance students^ problem-solving skills, while webcomic is more focused on students^ literacy. It also found that game-based learning is more beneficial as the strategy for online science learning. Despite the benefits that gained from those three online learning strategy, they will be more effective if it is done along with the classroom and hands-on activity to cover up the challenges and limitations. Keywords: Online science learning- virtual laboratory- webcomic- game-based learning Share Link | Plain Format | Corresponding Author (Eliyawati Eliyawati)

288	Science Education	ABS-205
Enhancing Students Critical Thinking through NASA Science as Interactive Multimedia in Learning Solar System Nurul Azizah Al Mar Ati (a), Eka Cahya Prima (a*), Agus Fany Chandra Wijaya (b) a) Department of Science Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Bandung, Indonesia *ekacahyaprima[at]upi.edu b) Department of Physics Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Bandung, Indonesia Abstract Science and technology advancement in the 21st Century requires a number of life skills that everyone must learn, one of which is Critical Thinking. Critical thinking skill is often defined as a process of metacognitive which consists of several sub-skills (e.g., analysis, inference, and evaluation) that increases the chances of solving a problem. This research attempted to implement NASA Science as Interactive Multimedia to enhance students critical thinking in learning Solar System. This study used a pre-experimental method with one group pretest-posttest design. The sampling used was convenience sampling, which participated in 42 7th grade students of a private school in Bandung. The Objective Test was used as a research instrument for both pre-test and post-test. These test items were designed according to Faciones indicators of Critical Thinking Skills. Based on the analysis result, the value of Normalized gain in pre-test and post-test is 0.033 and 0.025. According to the Wilcoxon Signed Rank Test, the hypothesis in this research was accepted. The value of sig. (2-tailed) is 0.000, with a significance value is 0.05. Thus, the result of this research shows that: There is a significant difference in enhancement on students critical thinking using NASA Science in learning Solar System. Keywords: Solar System- Interactive Multimedia- NASA Science- Students Critical Thinking Skill Share Link | Plain Format | Corresponding Author (Nurul Azizah Al Mar Ati)

289	Science Education	ABS-212
In vitro organogenesis induction of potato (Solanum tuberosum L.) stem in MS media with different thidiazuron (TDZ) concentration Jefri Saputro, Yulita Nurchayati, and Nintya Setiari Departemen Biologi, Universitas Diponegoro, Jl. Prof. Sudarto No. 13, Semarang 50275, Indonesia Abstract Potatoes (Solanum tuberosum L.) are a potential source of carbohydrates in food diversification. Conventional propagation of seeds is not effective for national seed stock, so in vitro propagation techniques need to be done. Factors that can spur organogenesis are the types of explants and the use of Thidiazuron (TDZ). This research aims to determine and analyze the types of explants and TDZ concentrations for enhancing potato organogenesis. The method used is induction of organogenesis. Stem explants are cut transversely and initiated in MS media with different TDZ concentrations. The research design used a completely randomized design (CRD) with factorial pattern 2x4. The first factor is explant type and the second factor is TDZ concentration (0, 4.5, 6 and 7.5ppm). The results showed that stem explants with shoot tended to increase the organogenesis induction of potato plants compared to stem explants without shoots. An increase in TDZ concentrations to 4.5ppm tended to increase all parameters researched, except shoot length and root length. It produce the best growth of shoots and leaves. The type of explant and TDZ concentration significantly affect the number of shoots, shoot length, shoot width, shoot emergence, number of leaves, number of roots, root length, and root emergence. Keywords: Solanum tuberosum, TDZ, type of explant, organogenesis, seed propragation Share Link | Plain Format | Corresponding Author (Jefri Saputro)

290	Science Education	ABS-214
Virtual experiment of simple pendulum to improve student^s conceptual understanding P A Wijaya, A Widodo, and Muslim Department of Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract The main purposes of this study are to develop learning material for virtual experiment and proof its effectivity in improving student^s conceptual understanding related to simple pendulum topic using PhET simulation. The study involved 75 students of Junior High School that grouped into 3 cluster (rural, suburban, and urban area). The result of pre-test and post-test based on 24 multiple choice questions in general revealed that the virtual experiment affects the improvement of student^s conceptual understanding with <g> value classified into low to medium gain. Unexpectedly, the results of sample in rural area got highest gain compared to others. Keywords: virtual experiment, conceptual understanding, simple pendulum Share Link | Plain Format | Corresponding Author (Pradita Adnan Wijaya)

291	Science Education	ABS-220
Promoting Early-Year Children Engagement in Science Learning Using Question and Answer Activities: A Classroom Action Research Susi Hindarti, Urip Sulistiyo, Nazurti, Muhammad Haris Effendi-hasibuan Graduate School of Universitas Jambi Abstract This article talks about the enhancement of early-year children engagement in a science learning in Jambi city Indonesia. A classroom action research design was used to collect data. Some 25 children were involved to learn about science phenomena using Question and Answer (Q&A) activities in three cycles for 60 minutes each. The teacher also used some pictures to attract the children^s attention. The Gutman-style classroom observations and the voice-recorder-assisted classroom conversations were used to collect data. The Gutman data were analyzed to see the frequency of the children^s participation during the lesson while the classroom dialogues were analyzed under a qualitative method. The results showed that the children^s participation from the cycle 1 to cycle 3 increased. The children were getting more focused on listening to the teacher, readier to share stories, and readier to answer and pose questions. This increased engagement made them interested to talk about five simple scientific phenomena. This finding suggested that the use of Q&A activities had been beneficial to actively engaged the students during the lessons and to stimulate those children to express what they knew about simple scientific phenomena. Keywords: Childhood education, science education, question and answer, classroom action research Share Link | Plain Format | Corresponding Author (Susi Hindarti)

292	Science Education	ABS-225
the effectiveness of explicit-reflective approach to enhance students^ understanding of the nature of science (NOS) and concept mastery Nur Rahmah (a*), Parsaoran Siahaan (b), Taufik Rahman (b) (a) Faculty of Tarbiyah and Teacher Training, IAI As^adiyah Sengkang Jl. Veteran Lapongkoda, Tempe, Wajo Regency, South Sulawesi 90914 (b) Department of Physics, Universitas Pendidikan Indonesia Jl. Dr. Setiabudi No.229, Isola, Kec. Sukasari, Kota Bandung, Jawa Barat 40154 (c) Department of Biology, Universitas pendidikan Indonesia Abstract This study aims to analyze the effectiveness of the explicit-reflective approach to enhance the understanding of NOS and concept mastery, and to see the relationship between the two variables through the application of an explicit-reflective approach in middle school students in Sengkang, South Sulawesi. A total of 21 students of grade 8 in public middle school became the sample in this study. To achieve the objectives, the research method employed was pre-experimental through The One-Group Pretest-Posttest Design. The result showed that the understanding of NOS and students^ concept mastery increased significantly after the implementation of explicit-reflective approach. Paired-t-samples test results indicated that the average posttest score of NOS understanding and mastery of students^ concepts increased significantly compared to the pretest score (sig. 0.00<0.05). The correlation between the enhancement of students^ NOS understanding and students^ concept mastery was obtained through the Pearson product-moment correlation analyst. The relationship between two variables was significant with the moderate category (r = 0.491). Keywords: nature of science, science learning, the explicit-reflective approach Share Link | Plain Format | Corresponding Author (Nur Rahmah)

293	Science Education	ABS-229
Profiling students^ misconception and concept mastery of the human body system topic Putri Sekar Melati (a*), Lilit Rusyati (a) a) International Program on Science Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract Conceptual understanding is one of the important indicators to achieve the goals of science teaching and learning. Learning and teaching science will always be correlated with concepts. Students^ perception of science concepts is constructed from knowledge along the learning process. In science teaching-learning, misunderstanding and misconceptions of science are influencing the performance of middle and high school students. This research^s purposes are identifying the common misconceptions and alternative ideas of science education and identifying students^ concept mastery of the topic. The participants in the current study Indonesian high school students from a senior high school (X) in Bandung, consisted of first (55, 6%), second (44, 4%) grades of high school. The instrument consisted of test items and one open-ended question related to the definition of species which were ^What do you know about blood?^ for the topic of the human body system. Each student^s score is being averaged, and research found the averages percentage of students^ scores is the same as the percentage of the correct answer. According to the results from those tables, shown the correlated data of the correct answer and misconceptions are complement each other, to become 100 %. For example, in the topic, the human body system, the first key idea, ^Blood carries oxygen to cells and carries carbon dioxide away from cells^. It has 73, 5 % correct answer and 26, 5 % misconception. The research also found that the percentage of the correct answer is the same with the percentage of concept mastery which is found 53,7 %. Based on these conditions it is very important to do improvement by carrying out more challenging learning and inviting students to construct new knowledge through appropriate learning experience to enhance students^ concepts mastery and decreasing misconceptions Keywords: Misconceptions-Science education-Human Body System Share Link | Plain Format | Corresponding Author (Putri Melati)

294	Science Education	ABS-249
Gender Differences in Science Learning: How is Students Questioning Quality through STEM based E-Module? Annisa Nurramadhani, Suci Siti Lathifah, and Yamin Program Studi Pendidikan IPA, Universitas Pakuan Abstract Science learning in this century has highly demanding for students^ outcome. Higher order thinking skills has become a main goal for science educator. Higher order thinking skills include critical thinking skills. creative thinking skills, argumentative skills, inquiry skills and others. Inquiry skills or questioning skills is highly important for students in science learning to construct that skills, students should have a curiosity. Learning strategy, method, and approach must be effective to promote it. One of them is STEM learning which is covered in technology such as electronic books. So, that this research using STEM based E-module to construct students questioning skills. However, there are differences of learning style, reading habit, and others between girls^ and boys^ students which effect their skill. Purposes of this research is to investigate how the question quality of girls^ and boys^ students using STEM based E-module in science learning. The method that is used pre-experimental with subject 26 students, 24 girls^ students and 2 boys^ students as freshman in second semester who take science courses in environmental theme. The technique to take the data in this research is used recording activity from Free Conference Call applications, reading test, and observation. The instruments such as transcript from WhatsApp application chatting group, Free Conference Call application recording activity, questionnaire, and ^Pojok Inquiry^ activity which is linked in STEM based E-module that consist of five reading material or narration for each sub-theme. Data analysed by using question quality category rubric. The results shown that there is difficulty to investigate significant differences of question quality between boys^ and girls^ students obviously. However, there are interesting results of the questions quality category results of girls^ and boys^ students. Boys has outperformed in understanding, relationship, and evaluation category than girls^ students Keywords: Science Learning, Questions Quality, STEM education, E-module Share Link | Plain Format | Corresponding Author (Annisa Nurramadhani)

295	Science Education	ABS-250
The Influence of Virtual Laboratory Activity with Inquiry-Based Learning on Students^ Attitude toward Science Liandha Arieska Putri (a*), Anna Permanasari (b), Nanang Winarno (a) a)Department of International Program on Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia b)Department of Chemistry Education, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract With the limitation of online science learning, virtual lab activity can be used as a solution in carrying out a science experiment in the teaching-learning process. Inquiry-based learning also can be integrated with virtual lab activity to create a more meaningful but attractive learning process. The aim of this study was to investigate the influence of inquiry virtual lab activity on students^ attitudes toward science. The participant of this study was 8th-grade junior high school students in Bandung, Indonesia. There are 40 students who haven^t learned light and optics yet. The method used is the pre-experimental research method with one group pre-test post-test design. The result shows that there is no significant difference in students^ attitudes toward science after learning by using inquiry virtual lab activity with a significant 0.461 (sig.>0.05). It is also found that this learning method has low efficiency in enhancing students^ attitudes toward science with a score of 0.04. Based on this research, it is suggested to combine both physical and virtual lab activity to provide a more attractive and effective teaching-learning process, especially in light and optics topics. Keywords: Virtual Lab- Inquiry-based learning- Attitudes toward science- Science Education- Light and Optics Share Link | Plain Format | Corresponding Author (Liandha Arieska Putri)

296	Science Education	ABS-252
Level of Sustainability Awareness: Where Are the Students^ Positions? Irwan Muhammad Ridwan(a*), Ida Kaniawati (b), Andi Suhandi (b), Achmad Samsudin (b) and Rahmat Rizal (c) a) Program Studi Pendidikan Ilmu Pengetahuan Alam, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia b) Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229 Bandung 40154, Indonesia c) Program Studi Pendidikan Fisika, Universitas Siliwangi, Jl. Siliwangi No.24, Indonesia Abstract Education for sustainable development (ESD) is a concern for not only Indonesian government but also worldwide. To create sustainable education, every individual has the responsibility to keep ESD as valuable capital for today^s and future generations. This study aims to obtain information about the level of students^ awareness of sustainability in protecting planet Earth. In addition, this study aims to identify the level of ongoing awareness in the concept of sustainable development education among pre-service physics teacher based on gender at one of the universities in Tasikmalaya. Data were collected using closed questionnaires. The results showed that the sustainability awareness of students with an average value of 0.77 was in the high criteria. However, the sustainability practice awareness category includes the criteria of rarely done. In addition, the sustainability awareness of female students is relatively higher compared to male students with percentage ratio of 78.1% and 75.5%. In conclusion, even though they have a high level of sustainability awareness, students are ^still less effective^ in the category of ^sustainability practice awareness with performance^ and ^practice some attitudes in making practices that support sustainable development^. Keywords: Education Sustainable Development- Sustainability awareness- atmosfer Share Link | Plain Format | Corresponding Author (Irwan Muhammad Ridwan)

297	Science Education	ABS-253
A review of research trends on meta-cognitive in science education within the past decade L Rusyati1*, N Y Rustaman1, A Widodo1 and M Ha2 1Science Education, School of Postgraduate Studies, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia 2Division of Science Education, College of Education Kangwon National University, 1 Kangwondaehak-gill, Chuncheon-si, Gangwon-do, 24341 Republic of Korea Abstract Metacognition and its implications for learning and instruction have become a central issue in educational research. The objective of the current review is mapping the field of meta-cognitive research trends in science education within the past decade. Furthermore, this study build the state of the art on meta-cognitive and describe the possibility research in the future. This study as a baseline for further research which focus on meta-cognitive integrated with other skills. The survey was implemented as method for this research. The major purpose of surveys is to describe the characteristics of a population. The subject for this study is 30 articles which is focusing on meta-cognitive in science education and have highest citation within the past decade (year 2009-2019). The articles come out from databases Google scholar and from reputable journals. Form of coding scheme is main instrument for this study. The finding describes that Research trends on meta-cognitive in science education dominant conducted in higher education for pre-service teachers. Furthermore, for metacognitive aspects generally focus on aspect Metacognitive Skills (MS) sub aspect regulating/controlling and Metacognitive Knowledge (MK) about strategies for science concepts in domain-general. Meanwhile, based on role, research on meta-cognitive focus as the input. The implication of research trends on meta-cognitive provide opportunities for conducting research in lower education for discipline-specific science. The further research also can assess on Metacognitive Experiences (ME) and Metacognitive Skills for sub aspect monitoring, evaluating and planning. Keywords: meta-cognitive, science education, research trends Share Link | Plain Format | Corresponding Author (Lilit Rusyati)

298	Science Education	ABS-254
Identify Students Conception and Level of Representations using Five-Tier Test on Wave Concepts Ardi Wiyantara (a), Ari Widodo (b), Eka Cahya Prima (b*) a) Program Studi Magister Pendidikan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia b) Department of Science Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia *ekacahyaprima[at]upi.edu Abstract This study aims to identify students conception and their level of representation on wave concepts. This is descriptive research. Data were collected through a five-tiers instrument test. Subjects in this study were thirty 9th grades in one of Junior High School in Bandung. The results of the study show that there are many students who lack knowledge and misconceptions. Students visual representation in wave concepts in real life is only at the macroscopic level. Their drawing in connecting phenomena and real-life also have some errors. Multiple representations-based learning is needed to facilitate students changing their conceptions into scientific and deep conceptions, which not only focus on representations modal such as verbal, picture, mathematic, and graph, but also level of representations, such as macroscopic, microscopic, sub-microscopic and symbolic. Keywords: Wave concepts- Students conception- Representation- Five-tier test Share Link | Plain Format | Corresponding Author (Ardi Wiyantara)

299	STEM Education	ABS-2
STEM Intersection in Citizenship Education Perspective: Enhancing Critical Thinking of Citizenship in the Indonesian Context Through Interdisciplinary Learning For Promoting Smart and Sustain Society Yayuk Hidayah , Sapriya, Cecep Darmawan, Elly Malihah Civic Education Department, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia Abstract Citizenship Education does not stop at the principles, concepts, and facts of state issues for students. Beyond just learning about life in the state, Citizenship Education is also a process of discovery. This statement gives a signal that students are not sufficiently invited to conventional learning limited to memorization in Citizenship Education, but also students understand what and how it happens. The purpose of this study is to find the effect of increasing the critical thinking of Indonesian citizenship through interdisciplinary learning for promoting a smart and sustainable society. This research was pre-experimental conducted for four weeks on 40 students of the Department of Primary School Teacher Education at Ahmad Dahlan University Yogyakarta. To know the critical thinking of citizenship in the Indonesian context through interdisciplinary learning for promoting smart and sustainable learning societies using activity sheets based on outdoor education on students cognitive skills are applied. They consist of 6 items given as a pretest and posttest for students. The results of the analysis explained that there was a significant influence between the activity sheets based on the critical learning of Indonesian citizenship context through interdisciplinary education for promoting a smart and sustainable society. Also, there is a significant increase in the results of the process of citizenship critical learning after experiencing learning by using an activity sheet based on essential knowledge in Citizenship Education Keywords: Smart and Sustain Society, STEM, Citizenship Education Share Link | Plain Format | Corresponding Author (Yayuk Hidayah)

300	STEM Education	ABS-24
The influence of jigsaw cooperative learning model based on video animation on student self-efficacy Yasir Nurhakim (a*), Any Fitriani (b), Wawan Setiawan (b) a) Department of Natural Sciences Education, Indonesia University of Education, Jl. Setiabudi No. 229, Bandung 40154, Indonesia *yasirnurhakim07[at]gmail.com b) Indonesia University of Education, Jl. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study is aimed to analyze the influence of cooperative jigsaw on students^ self-efficacy. The population of this study is seven grade students an academic year of 2019-2020. Sampling purposively, two classes of the seventh grades. The research method of this study was blended with embedded design. The instruments of this study were the self-efficacy questionnaire, interview transcription, and observation sheet. The data from the questionnaire were analyzed by t-test, meanwhile, interview transcription and observation sheets became supplement findings. The finding showed that self-efficacy of experiment and control class Sig. (0,005) < α (α = 0.05) which means there was a difference between students with animation video cooperative jigsaw and with an only cooperative jigsaw. Keywords: Cooperative Jigsaw- Self-Efficacy- Learning Model Share Link | Plain Format | Corresponding Author (Yasir Nurhakim)

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