JCER (Journal of Chemistry Education Research)最新文献

{"title":"DEVELOPMENT OF AUGMENTED REALITY TECHNOLOGY-BASED INTERACTIVE LEARNING MEDIA IN CHEMICAL BONDING MATERIALS","authors":"E. S. Bahriah, S. Agung, A. Nur","doi":"10.26740/jcer.v6n2.p93-99","DOIUrl":"https://doi.org/10.26740/jcer.v6n2.p93-99","url":null,"abstract":"Abstract: This study aims to produce interactive learning media based on augmented reality technology on the concept of chemical bonds and determine student responses to the media. The research method used is the R & D method. The instruments used are material expert validation sheets, media expert validation sheets, and student response questionnaires. The data obtained were analyzed descriptively. Based on the results of material expert validation, an average of 80.41% (feasible category) was obtained and the media expert validation results obtained an average of 90.92% (very feasible category). The results of the limited trial received positive responses from students with details of the percentages obtained, namely 85.75% for the usability aspect, 81.80% for the illustration use aspect, 74.57% for the future impact aspect. 79.64% for the aspect of material usefulness, and 77.20% for the grammatical aspect. Overall, the augmented reality interactive learning media developed received a positive response from students with a percentage of 79.78% and suitable for use in learning.","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129015005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CONCEPTUAL PROFILE IN CHEMISTRY: THE MATTER OF ATOMIC THEORIES","authors":"Rezi Ulya Fauziah, D. Novita","doi":"10.26740/jcer.v6n2.p119-123","DOIUrl":"https://doi.org/10.26740/jcer.v6n2.p119-123","url":null,"abstract":"The aim of the study was to analyse the conceptual profile in chemistry matter of atomic theories. An instrument of three-tier diagnostic test was given to 35 students from X Science 4 class in SMAN 1 Driyorejo and regarding to this worksheet treatment session was given to enhancing students achievement. This study shown the conceptual profile in chemistry varies in the reduction proportion value, but the lowest was Rutherford atomic theories with 0.48 in middle-category. The need of complementary views for the atomic structure expecially in atomic theories bring important issues for understanding and teaching chemistry, which will be discussed further in the article","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"22 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127473937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"HOW WORTHY IS DALTON’S PURSUIT OF CHEMICAL ATOMISM FOR THE PROSPECTIVE TEACHERS? A CASE OF KOTEBE UNIVERSITY OF EDUCATION, ETHIOPIA","authors":"Abayneh Lemma Gurmu, Woldie Belachew","doi":"10.26740/jcer.v6n2.p138-151","DOIUrl":"https://doi.org/10.26740/jcer.v6n2.p138-151","url":null,"abstract":"Atom possesses controversial ontological accounts even in a single discipline such as chemistry. Its essence as a reality and inclusion in science education has been subjected to numerous philosophical and scientific debates. The educational literature also shows that the ancient corpuscular notion is dominantly portrayed within the curriculum and instruction of many educational settings. The fundamental problem is that the chemists, educators, philosophers, and historians of chemistry themselves haven’t had a substantial agreement on any of the philosophical and scientific accounts due to their longstanding philosophical divide between the different positions of positivism and realism. Neither has the historical perspective of philosophy and science been reasonably acknowledged in science/chemistry education. We aimed in this interpretative case study to figure out how much Dalton’s pursuit of the chemical atomism is worth to 22 purposely selected and interviewed prospective teachers. The resulting transcripts were analyzed using HPS, the seven milestones of its case study. As a result, one major and two minor themes were found none of which match any of the themes of the milestones. Moreover, the entire narrative lacks some essential perspectives and contexts of HPS in general and Dalton’s experimentations in particular. Misjudgment of his indivisibility notion, for example, is a drawback associated with this limitation. Thus, more inquiries are needed to be conducted in the long run into the curriculum and classroom practice while departmental discussions on such issues are suggested in the short run.","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123372925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IMPACT OF EXPLICIT SCIENTIFIC INQUIRY INSTRUCTION HYBRID MODE WITH SOCIOSCIENTIFIC ISSUE CONTEXT ON STUDENTS’ CRITICAL THINKING SKILLS IN CHEMICAL KINETICS","authors":"Eli Khusmawardani, M. Muntholib, Yahmin Yahmin","doi":"10.26740/jcer.v6n2.p131-137","DOIUrl":"https://doi.org/10.26740/jcer.v6n2.p131-137","url":null,"abstract":"This study aimed to explore whether Explicit Scientific Inquiry Instruction (ESII) Hybrid Mode in the context of Socioscientific Issues could improve the students' critical thinking skills. The research design was a one group pretest-posttest design. The research sample was 31 science eleventh graders at SMA Mojosari for the academic year 2021/2022. The data was collected using a critical thinking skills test on Chemical Kinetics which consists of 27 valid questions with a Cronbach Alpha reliability of 0.756. A paired-samples t-test showed that the Explicit Scientific Inquiry Instruction (ESII) Hybrid Mode in the Socioscientific Issues context improved students’ critical thinking skills (p = 0.00 < 0.05). The improvement was strong as its N-gain score was 0.58 (upper–medium category) and d-effect size was 1.40 (much larger than typical category). This shows that statistically ESII hybrid mode in the context of SSI can improve students' critical thinking skills. Therefore, this strategy can improve students' critical thinking skills in the instruction that allows students to interpret, analyze, explain, evaluate, and draw conclusions","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122266024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"APPLICATION OF COOPERATIVE LEARNING TYPE THINK PAIR SHARE COMBINED MAKE A MATCH TO PRACTICE COMMUNICATION SKILLS ON ACID BASE MATERIALS","authors":"Indah Nur Safitri, H. Nasrudin","doi":"10.26740/jcer.v6n2.p100-109","DOIUrl":"https://doi.org/10.26740/jcer.v6n2.p100-109","url":null,"abstract":"The goals of this research to describe the application of cooperative learning model of Think Pair Share combined Make a Match, student activities, communication skills, learning outcomes, and student responses. The research design used was One Group Pretest-Posttest design with a sample of 36 students in class XI IPA 4 MAN Sidoarjo. The results showed that (1)Implementation model at three meetings in a row obtained a percentage of 89.58%; 89.58% and 95.83%. (2)Student activities at three meetings successively got a percentage of 97.96%; 95.56%; 96.11%. (3)Communication skills in the form of the quantity questions in three meetings with a percentage of 27.78%; 36.11% and 41.67% with quite good category, and the number of students' opinion in three meetings with a percentage of 36.11%; 55.56% and 72, 22%. Communication skills in the form of quality questions and opinions of students in three meetings with the number of students a good predicate of 3 and 12 students; 7 and 15 students; 6 and 19 students. (4)Student learning outcomes obtain an average score of 80.67, while classical completeness student learning outcomes of 88.89%. (5)Positive responses of students obtain an average percentage of 92.01% with very good criteria.","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129420871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE EFFECTIVENESS OF USING 3D SIMULATION MEDIA IN ONLINE LEARNING OF MOLECULAR GEOMETRY ON IMPROVING LEARNING","authors":"Nissa Ulfatu Rohmah","doi":"10.26740/jcer.v6n1.p19-25","DOIUrl":"https://doi.org/10.26740/jcer.v6n1.p19-25","url":null,"abstract":"AbstractMolecular geometry is one of the materials in chemical bonds that are abstract. Where students must think imaginatively in predicting the three-dimensional shape of an existing molecule. But because it is abstract the majority of students have difficulty understanding and visualizing the theory of molecular form. This problem is coupled with online learning that makes it difficult for teachers to convey molecular geometry materials. The solution to the problem is the use of interactive learning media for PhET 3D simulation. This study aims to determine the effectiveness of the use of 3D simulation media in online learning of molecular geometry materials. This research is an experimental research in the form of pre- experimentation with the design of one group pretest posttest. Data collection techniques are carried out with tests and questionnaires. Sampling is done by purposive sampling. The result of N-Gain data analysis of experiment class 0.79 with percentage of N-Gain score of 79.8 % with high criteria. This shows that the use of 3D simulation media in online learning of molecular geometry molecular shapes is very effectively used in the teaching and learning process. Hypothesis testing is carried out t-paired with a level of trust of 5%. Interpretation of hypothesis testing by looking at the value of Sig (2 tailed) of 0.00 where 0.00 < 0.05. it can be concluded that there are significant differences in the use of 3D simulation media. Based on effect size test the value obtained is 0.98 with high criteria. These results can be interpreted that the use of 3D simulation media in molecular geometry learning has a scale of effect or strong influence on student learning outcomes. The result of student response data analysis there are four aspects, namely, aspects of students' interest in following learning, material understanding, ease of problem solving, and group cooperation.  Aspects of students' interest in following learning and material understanding aspects have excellent criteria. As for the aspect of ease of problem solving and group cooperation has good criteria. Keyword: 3D simulation media, Online learning, Molecular Geometry, Learning outcomes","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125905419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STEM INTEGRATED CHEMISTRY LEARNING EFFECTIVENESS (SCIENCE, TECHNOLOGY, ENGINEERING, AND MATHEMATICS) IN THE TIME OF COVID-19","authors":"Fatayah Fatayah, I. Yuliana, Rendy Priyasmika","doi":"10.26740/jcer.v6n1.p72-76","DOIUrl":"https://doi.org/10.26740/jcer.v6n1.p72-76","url":null,"abstract":"Abstract. The purpose of this study was to determine the effectiveness of STEM (Science, Technology, Engineering, and Mathematics) integrated learning on the material of molecular form for Class X MA Al-Khoiriyah students. The research design used in this research is descriptive analysis. The stages of this research consist of 3 (three) stages, namely pre-research, testing the validation of research tools, and implementing STEM integrated learning. As for knowing the effectiveness is measured by indicators, namely the level of student learning completeness after integrated STEM learning activities and the resulting STEM products. From the analysis of the final test, it can be seen that of the ten students who were the research subjects, 80% had achieved completeness and the resulting STEM product was in the good category so it can be concluded that STEM integrated learning is effectively used in molecular geometry learning. \u0000  \u0000Keywords: Effectiveness, STEM, Chemistry, Molecular geometry","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116788741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEVELOPMENT OF ASSEMBLR EDU-ASSISTED AUGMENTED REALITY LEARNING MEDIA ON THE TOPIC OF EFFECT OF SURFACE AREA AND TEMPERATURE ON REACTION RATE","authors":"Briel Batis Tuta, J. Harta, Sarah Sani Purwasih","doi":"10.26740/jcer.v6n1.p44-57","DOIUrl":"https://doi.org/10.26740/jcer.v6n1.p44-57","url":null,"abstract":"Understanding concepts at the submicroscopic and symbolic levels becomes challenge in studying subtopics of the effect of surface area and temperature because some parts are still abstract and difficult to understand. Creative and innovative learning media are needed to help learn concepts through visualization. This research aims to create product in the form of Augmented Reality assisted by Assemblr Edu that is valid, effective, and practical. This study is development research that adopts the modified Borg & Gall development model. The research subjects were 12 students of pre-service chemistry teachers. The research supporting instruments were validation sheets, test items, and response questionnaires. Data were analyzed using descriptive statistics and Aiken's V. The results showed that: (1) product fulfilled very valid criteria with average percentage of 91% with the results from the presentation and product use aspects of 90% (very valid), content aspect of 92% (very valid); language aspect by 92% (very valid); (2) the average test score of respondents after the trial is 75 which indicates that the results are good and the product is classified as effective; and (3) the average response to the product is 89% indicating that the product is very good and very practical for further use. This digital product is feasible to use and is recommended to support the understanding of the subtopic of the effect of surface area and temperature on the rate of chemical reactions.","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123068589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEVELOPMENT OF ASSEMBLR EDU-ASSISTED AUGMENTED REALITY LEARNING MEDIA ON THE TOPIC OF EFFECT OF REACTANT’S CONCENTRATION AND CATALYST ON REACTION RATE","authors":"Laurensia Octaviani, J. Harta, Gevin Yeri Winarta","doi":"10.26740/jcer.v6n1.p58-71","DOIUrl":"https://doi.org/10.26740/jcer.v6n1.p58-71","url":null,"abstract":"The level of submicroscopic representation can be cause of difficulty in learning chemistry, so that interest and understanding of chemistry concept is low. In overcoming this, innovative learning media are needed that are able to visualize and make it easier to understand abstract concepts, especially on the subtopic of the effect of reactant’s concentration and catalyst on the chemical rate reactions. This research aims to create product in the form of Augmented Reality assisted by Assemblr Edu that is valid, effective, and practical. This study is Research and Development that uses ADDIE development model and involves 10 prospective chemistry teacher students. Research instruments include validation sheets, test items, and response questionnaire. Data were analyzed using Aiken's V and descriptive statistic. The results showed that: (1) product have fulfilled very valid criteria with average percentage of 92% with aspect of product presentation and use are 92% (very valid), content aspect of 94% (very valid); language aspect by 92% (very valid); (2)average test score of respondents after using the product is 70 which indicates that product is classified as effective; and (3)average response to the product is 90% indicating that the product is very good and classified as very practical. The product is feasible to use and can support the mastery of technology-based concept, especially in the subtopic of the effect of reactant’s concentration and catalyst on chemical rate reactions.","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128936258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DESCRIPTION OF THE ROLE OF GUIDING BOOK IN LEARNING BASED ON ASSESSMENT AS LEARNING","authors":"M. Muchlis, R. Agustini, Kusumawati Dwiningsih, F. Asih","doi":"10.26740/jcer.v6n1.p77-83","DOIUrl":"https://doi.org/10.26740/jcer.v6n1.p77-83","url":null,"abstract":"Abstract. The  aim of this research was to describe the Guiding Book which helps implementing assessment as learning. The research subjects were 29 students of Undergraduate Program of Chemistry Education, Universitas Negeri Surabaya. The research methods were questionnaire and documentation method. Questionnaire method was to record student responses to the role of the Guiding Book which helps implementing assessment as learning. The documentation method was to record students’ activity in implementing of learning based on assessment as learning. The document used in this documentation method which was  assessment as learning based worksheet. The result showed that the percentage of students response was about 81% for the six items, which means that the Guiding Book played a very helpful role in the implementing  of learning based on assessment as learning. The result of observations on assessment as learning based worksheet showed that students implemented of learning based on assessment as learning by utilizing or being inspired the contents of the Guiding Book.\u0000Keywords: guiding book, assessment as learning","PeriodicalId":444789,"journal":{"name":"JCER (Journal of Chemistry Education Research)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131905893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}