R. K. Irawati, A. Wicaksono, Salamiyah Salamiyah, E. W. N. Sofianto, T. Wijaya
Ethnochemistry is the study of chemical practices by specific cultural groups that are used for activities following the ideology of the community, including the Banjarese community. Banjar ethnochemistry can be integrated into science learning, especially for Indonesia’s senior high school chemistry learning context. This study aims to analyze the results of exploring the local wisdom of the Banjarese community, which is included in ethnochemistry, and to take an inventory of Banjar ethnochemical knowledge as a source of Indonesia senior high school chemistry learning. The study uses an exploratory qualitative approach with ethnographic methods. The subjects in this research are community leaders and academics who understand Banjar ethnochemistry. Data collection techniques used interviews, observation, and documentation. The results of the Banjar ethnochemical exploration include Banjar soup, sasirangan, basungu, rub ash, batimung, sepat dry fish, diamond, tanggui, tapai Gambut, laduman, kelakai, ironwood, ironwood hair oil, fish pentol, selangat shredded fish, Mangurak wells, mandai, and lahang ice. An inventory of Banjar ethnochemical knowledge that can be used as a source for Indonesia senior high school chemistry learning consists of acids and bases, chemistry and its scope, alkane derivatives, macromolecules, elemental chemistry, and colligative properties of solutions.
{"title":"Exploration and Inventory of Banjar Etnochemistry as a Learning Source in Indonesia Senior High School Chemistry Context","authors":"R. K. Irawati, A. Wicaksono, Salamiyah Salamiyah, E. W. N. Sofianto, T. Wijaya","doi":"10.15575/jtk.v8i1.22380","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.22380","url":null,"abstract":"Ethnochemistry is the study of chemical practices by specific cultural groups that are used for activities following the ideology of the community, including the Banjarese community. Banjar ethnochemistry can be integrated into science learning, especially for Indonesia’s senior high school chemistry learning context. This study aims to analyze the results of exploring the local wisdom of the Banjarese community, which is included in ethnochemistry, and to take an inventory of Banjar ethnochemical knowledge as a source of Indonesia senior high school chemistry learning. The study uses an exploratory qualitative approach with ethnographic methods. The subjects in this research are community leaders and academics who understand Banjar ethnochemistry. Data collection techniques used interviews, observation, and documentation. The results of the Banjar ethnochemical exploration include Banjar soup, sasirangan, basungu, rub ash, batimung, sepat dry fish, diamond, tanggui, tapai Gambut, laduman, kelakai, ironwood, ironwood hair oil, fish pentol, selangat shredded fish, Mangurak wells, mandai, and lahang ice. An inventory of Banjar ethnochemical knowledge that can be used as a source for Indonesia senior high school chemistry learning consists of acids and bases, chemistry and its scope, alkane derivatives, macromolecules, elemental chemistry, and colligative properties of solutions.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76699695","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}
Students often ask about the practical application of concepts and knowledge gained from their coursework. Practicum worksheets provide an opportunity for students to engage in hands-on learning, identify their strengths, learn from their mistakes, and develop enhanced competence as learners. This study aims to develop an effective and valid worksheet on PjBL in whey kefir paper soap. Research and Development (R&D) is used as a method. Worksheet designs were produced using three formulas depending on production techniques. Based on Indonesia National Standard, Formula 1 (8% whey kefir) demonstrated the best qualities of the paper soap. The expert validation test of the worksheets showed a rcount value of 0.84 (valid). The percentage of worksheet answers was very good (88%). Student worksheet feasibility test results showed a rcount value of 0.84 (feasible). Practicum worksheets are categorized as very suitable for use as a learning media in an organic chemistry course.
{"title":"Project-Based Learning (PjBL) Worksheet on the Production of Whey Kefir Paper Soap","authors":"Fitri Nur Islamiati","doi":"10.15575/jtk.v8i1.25219","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.25219","url":null,"abstract":"Students often ask about the practical application of concepts and knowledge gained from their coursework. Practicum worksheets provide an opportunity for students to engage in hands-on learning, identify their strengths, learn from their mistakes, and develop enhanced competence as learners. This study aims to develop an effective and valid worksheet on PjBL in whey kefir paper soap. Research and Development (R&D) is used as a method. Worksheet designs were produced using three formulas depending on production techniques. Based on Indonesia National Standard, Formula 1 (8% whey kefir) demonstrated the best qualities of the paper soap. The expert validation test of the worksheets showed a rcount value of 0.84 (valid). The percentage of worksheet answers was very good (88%). Student worksheet feasibility test results showed a rcount value of 0.84 (feasible). Practicum worksheets are categorized as very suitable for use as a learning media in an organic chemistry course.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83126770","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}
Understanding the Nature of Science (NoS) could help improve thinking and reasoning skills. Students could use their critical thinking (CT) skills to help themselves in solving problems. Based on the NoS, this study sought to assess the CT skills of chemistry pre-service teachers at university. This study used a qualitative with a case study as the method. A purposive sampling technique was elaborated to select the research object. The respondents were chemistry students at university. The data sources were open-ended questions and interviews from the NoS questionnaire. The method of data triangulation was employed to conclude the study findings. The results showed that the CT skills possessed by chemistry pre-service teachers: were interpretation skills, inference skills, and self-regulation skills. Those skills were still in the low category. The participants also lacked in explaining, evaluating, and analyzing the students' abilities. Thus, the understanding of NoS informants can be categorized in the transitional cohort. The research findings became the department's input because some students still struggled to analyze NoS aspects in chemistry, especially through each stage of CT skills. Hence, future research is suggested to develop the students' CT skills in applying the NoS aspect in chemistry learning, especially for the pre-service teacher.
{"title":"Exploration of Student's Critical Thinking Skills in the Context of Chemistry Based on the Nature of Science","authors":"Suwahono Suwahono, R. K. D. A. Zulfirman","doi":"10.15575/jtk.v8i1.23358","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.23358","url":null,"abstract":"Understanding the Nature of Science (NoS) could help improve thinking and reasoning skills. Students could use their critical thinking (CT) skills to help themselves in solving problems. Based on the NoS, this study sought to assess the CT skills of chemistry pre-service teachers at university. This study used a qualitative with a case study as the method. A purposive sampling technique was elaborated to select the research object. The respondents were chemistry students at university. The data sources were open-ended questions and interviews from the NoS questionnaire. The method of data triangulation was employed to conclude the study findings. The results showed that the CT skills possessed by chemistry pre-service teachers: were interpretation skills, inference skills, and self-regulation skills. Those skills were still in the low category. The participants also lacked in explaining, evaluating, and analyzing the students' abilities. Thus, the understanding of NoS informants can be categorized in the transitional cohort. The research findings became the department's input because some students still struggled to analyze NoS aspects in chemistry, especially through each stage of CT skills. Hence, future research is suggested to develop the students' CT skills in applying the NoS aspect in chemistry learning, especially for the pre-service teacher.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"88 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91124849","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}
This study aims to determine the characteristics of the assessment instrument, feasibility, and description of the affective aspects of students in the reaction rate material. The measure affective aspects are creativity and critical thinking attitudes. The research method is research and development (R&D) developed with a 4-D model. The research subject was taken from second-grade Senior High School with a random sampling technique. The initial product of the instrument was content validated by expert judgment, which was calculated using the Aiken formula and construct validity using Confirmatory Factor Analysis. The results showed that the instrument was declared feasible based on the content validity of 0.976 with a good category. The construct validity results stated that 18 fit items from 21 statement items. The description of the affective aspects of students in the reaction rate material from 213 students showed that the average student is in a good category.
{"title":"The Development of an Affective Assessment Instrument Based on Creativity and Critical Thinking on Reaction Rate Material","authors":"Yessi Prihartina, Das Salirawati","doi":"10.15575/jtk.v8i1.25397","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.25397","url":null,"abstract":"This study aims to determine the characteristics of the assessment instrument, feasibility, and description of the affective aspects of students in the reaction rate material. The measure affective aspects are creativity and critical thinking attitudes. The research method is research and development (R&D) developed with a 4-D model. The research subject was taken from second-grade Senior High School with a random sampling technique. The initial product of the instrument was content validated by expert judgment, which was calculated using the Aiken formula and construct validity using Confirmatory Factor Analysis. The results showed that the instrument was declared feasible based on the content validity of 0.976 with a good category. The construct validity results stated that 18 fit items from 21 statement items. The description of the affective aspects of students in the reaction rate material from 213 students showed that the average student is in a good category.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78127702","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}
This study aims to create and evaluate the effectiveness of a chemistry learning module based on various redox material representations. Research and development (R&D) is the methodology used in this research: using a 4D model. It consists of defining, designing, developing, and disseminating stages. The research was carried out until the development phase. The quality of the module was assessed by material experts, media experts, and reviewers (chemistry educators). The respondents are 32 students in first grade of Senior High School Science class. Quality assessment and student responses were made using a Likert and Guttman scale questionnaire sheet. The result shows that the percentage of objectives found by validating all aspects of the module's content by media, reviewers, and chemistry educators experts are 91.6%, 94.7%, and 81.25%, respectively, with excellent categories, and students responded positively to the module. The module is considered helpful as a learning media for redox topics.
{"title":"Chemical Learning Module Based on Multiple Representations of Redox Materials","authors":"Nendi Gunawan, S. Rahmawan","doi":"10.15575/jtk.v8i1.23075","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.23075","url":null,"abstract":"This study aims to create and evaluate the effectiveness of a chemistry learning module based on various redox material representations. Research and development (R&D) is the methodology used in this research: using a 4D model. It consists of defining, designing, developing, and disseminating stages. The research was carried out until the development phase. The quality of the module was assessed by material experts, media experts, and reviewers (chemistry educators). The respondents are 32 students in first grade of Senior High School Science class. Quality assessment and student responses were made using a Likert and Guttman scale questionnaire sheet. The result shows that the percentage of objectives found by validating all aspects of the module's content by media, reviewers, and chemistry educators experts are 91.6%, 94.7%, and 81.25%, respectively, with excellent categories, and students responded positively to the module. The module is considered helpful as a learning media for redox topics.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"805 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78478085","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}
The research aims to develop integrated teaching materials with a STEM approach to enhance students' scientific literacy, explicitly focusing on Basic Chemical Law Materials. The study utilized a Research and Development (R&D) approach employing the 4D (define-design-development-disseminate) research model. The research instruments included a test to measure students' scientific literacy and a non-test instrument to gather validation data from experts and assess student responses. The findings demonstrated high feasibility percentages, with 91.4% for content, 89% for presentation, 93.2% for language, 86.6% for scientific literacy, 93.2% for STEM, and 90% for media. Moreover, based on the scientific literacy test results, the N-gain pre-test and post-test indicated a substantial increase with a score of 0.74, classifying it as a high increase. Consequently, it can be concluded that developing integrated teaching materials with a STEM approach effectively enhances students' scientific literacy in basic laws of chemistry.
{"title":"Fostering Scientific Literacy through Integrated STEM Teaching Materials on Basic Laws of Chemistry","authors":"A. Sutiani, Cinta Johanna Tessalonika Pasaribu","doi":"10.15575/jtk.v8i1.25833","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.25833","url":null,"abstract":"The research aims to develop integrated teaching materials with a STEM approach to enhance students' scientific literacy, explicitly focusing on Basic Chemical Law Materials. The study utilized a Research and Development (R&D) approach employing the 4D (define-design-development-disseminate) research model. The research instruments included a test to measure students' scientific literacy and a non-test instrument to gather validation data from experts and assess student responses. The findings demonstrated high feasibility percentages, with 91.4% for content, 89% for presentation, 93.2% for language, 86.6% for scientific literacy, 93.2% for STEM, and 90% for media. Moreover, based on the scientific literacy test results, the N-gain pre-test and post-test indicated a substantial increase with a score of 0.74, classifying it as a high increase. Consequently, it can be concluded that developing integrated teaching materials with a STEM approach effectively enhances students' scientific literacy in basic laws of chemistry.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74757434","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}
COVID-19 pandemic accelerated the transformation of education and forced the digitalization of education to create effective learning. The understanding of complex chemical structures and reactions holds great significance in the realm of chemistry education. Benzene and its derivatives are particularly challenging topics that require a robust representation approach. The research aims to develop and assess the feasibility of Google Sites-based multiple representations learning media on benzene and its derivatives material. The research utilized the Research and Development (R&D) approach, adhering to the ADDIE (analysis, design, development, implementation, and evaluation) development model. The research was carried out until the development stage. The developed learning media effectively integrated three levels of chemical representation for benzene and its derivatives, utilizing various features such as text, animation, video, 3D molecular simulation, and images. The validation conducted by content and media experts indicated that the learning media is valid with scores of 95.8% and 92.5%, respectively, with excellent category. Furthermore, the product quality assessment conducted by experts and students' responses showed that media could be used practically, with percentages of 95% and 95% as excellent categories. These findings confirm the suitability of the developed learning media for facilitating students' understanding of benzene and its derivatives during the learning process.
{"title":"Development of Google Sites-based Multiple Representations Learning Media on Benzene and Its Derivatives Topic","authors":"Muhammad Anarda Wiguna, Muhammad Zamhari","doi":"10.15575/jtk.v8i1.25666","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.25666","url":null,"abstract":"COVID-19 pandemic accelerated the transformation of education and forced the digitalization of education to create effective learning. The understanding of complex chemical structures and reactions holds great significance in the realm of chemistry education. Benzene and its derivatives are particularly challenging topics that require a robust representation approach. The research aims to develop and assess the feasibility of Google Sites-based multiple representations learning media on benzene and its derivatives material. The research utilized the Research and Development (R&D) approach, adhering to the ADDIE (analysis, design, development, implementation, and evaluation) development model. The research was carried out until the development stage. The developed learning media effectively integrated three levels of chemical representation for benzene and its derivatives, utilizing various features such as text, animation, video, 3D molecular simulation, and images. The validation conducted by content and media experts indicated that the learning media is valid with scores of 95.8% and 92.5%, respectively, with excellent category. Furthermore, the product quality assessment conducted by experts and students' responses showed that media could be used practically, with percentages of 95% and 95% as excellent categories. These findings confirm the suitability of the developed learning media for facilitating students' understanding of benzene and its derivatives during the learning process.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85264601","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}
Nur Aini Fitri, Ermia Hidayanti, S. Hadisaputra, Sha-Ling Han
This study aims to assess the validity and practicality of computational chemistry practicum modules for high school students, focusing on molecular geometry and independent learning. The research used a Research and Development (R&D) approach with the 4D model (define, design, develop, and disseminate). A limited trial was conducted with 23 students selected through cluster random sampling. The module development research results show that the validity assessed using Aiken's V index by two validators yielded a value of 0.64, indicating its validity and suitability for high school students. Furthermore, the practicality of the module was evaluated using a student response questionnaire, which yielded an average score of 84%, indicating its high practicality. Consequently, the module is considered valid and highly practical as a practicum learning resource for high school students.
{"title":"Development and Evaluation of Laboratory Work Module to Enhance Student’s Knowledge in Molecular Visualization","authors":"Nur Aini Fitri, Ermia Hidayanti, S. Hadisaputra, Sha-Ling Han","doi":"10.15575/jtk.v8i1.25647","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.25647","url":null,"abstract":"This study aims to assess the validity and practicality of computational chemistry practicum modules for high school students, focusing on molecular geometry and independent learning. The research used a Research and Development (R&D) approach with the 4D model (define, design, develop, and disseminate). A limited trial was conducted with 23 students selected through cluster random sampling. The module development research results show that the validity assessed using Aiken's V index by two validators yielded a value of 0.64, indicating its validity and suitability for high school students. Furthermore, the practicality of the module was evaluated using a student response questionnaire, which yielded an average score of 84%, indicating its high practicality. Consequently, the module is considered valid and highly practical as a practicum learning resource for high school students.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84381988","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}
The aim of this study is to investigate how to develop, validity, and practicality levels from the PBL-based module. The research is based on Research & Development (R&D) with a modified 4-D development model to 3-D covering define, design, and development stages. Data collection tools include observation, validation, worksheet, and questionnaires of students’ responses to the chemistry modules. Based on the study results, it was identified that the modules developed to determine criteria eligibility, practicality, and response students of Problem-Based Learning on petroleum material. The material and media experts' validation tests showed 0.851 and 0.726 (valid), respectively. The average practically percentage of modules for students is 91.47% with very practical criteria. The development of PBL-based chemistry modules on chemistry and the application of petroleum is expected to help students in learning chemistry.
{"title":"Developing Problem-Based Learning Modules on Petroleum Materials in Chemistry Learning","authors":"F. Ahmad, Murtihapsari Murtihapsari, Y. P. Rombe","doi":"10.15575/jtk.v8i1.23952","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.23952","url":null,"abstract":"The aim of this study is to investigate how to develop, validity, and practicality levels from the PBL-based module. The research is based on Research & Development (R&D) with a modified 4-D development model to 3-D covering define, design, and development stages. Data collection tools include observation, validation, worksheet, and questionnaires of students’ responses to the chemistry modules. Based on the study results, it was identified that the modules developed to determine criteria eligibility, practicality, and response students of Problem-Based Learning on petroleum material. The material and media experts' validation tests showed 0.851 and 0.726 (valid), respectively. The average practically percentage of modules for students is 91.47% with very practical criteria. The development of PBL-based chemistry modules on chemistry and the application of petroleum is expected to help students in learning chemistry.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91199035","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}
Most chemical concepts are abstract, hierarchical, and constructed from basic to complex concepts. Lewis structure, VSEPR theory, molecular geometry, and molecular symmetry have hierarchical idea. This study attempted to characterize and determine the relationship between students’ knowledge of Lewis structure, VSEPR theory, molecular geometry, and molecular symmetry of the 1st, 2nd, and 3rd-year chemistry students at a public university. This study involved 88 students in total selected using proportionate stratified random sampling. The instrument was a relevant short-answer question on the three topics. The data were measured using nonparametric statistics, especially the Kruskal-Wallis difference and Spearman Rank correlation tests. This study’s results show differences in understanding of Lewis structure, molecular geometry, and symmetry between the 1st, 2nd, and 3rd-years students. The 3rd-year students always performed better than the 1st and 2nd-year students for all topics. The test result confirms a positive and strong relationship between students’ understanding of Lewis structure and molecular geometry for the three groups of students with ρ values of 0.979, 0.979, and 0.966 (< 0.01) for 1st, 2nd, and 3rd-year students, respectively.
{"title":"Chemistry Students’ Understanding of Lewis Structure, VSEPR Theory, Molecular Geometry, and Symmetry: A Cross-Sectional Study","authors":"Habiddin Habiddin, Lilla Farizka, Ahmad N. Shuid","doi":"10.15575/jtk.v8i1.24410","DOIUrl":"https://doi.org/10.15575/jtk.v8i1.24410","url":null,"abstract":"Most chemical concepts are abstract, hierarchical, and constructed from basic to complex concepts. Lewis structure, VSEPR theory, molecular geometry, and molecular symmetry have hierarchical idea. This study attempted to characterize and determine the relationship between students’ knowledge of Lewis structure, VSEPR theory, molecular geometry, and molecular symmetry of the 1st, 2nd, and 3rd-year chemistry students at a public university. This study involved 88 students in total selected using proportionate stratified random sampling. The instrument was a relevant short-answer question on the three topics. The data were measured using nonparametric statistics, especially the Kruskal-Wallis difference and Spearman Rank correlation tests. This study’s results show differences in understanding of Lewis structure, molecular geometry, and symmetry between the 1st, 2nd, and 3rd-years students. The 3rd-year students always performed better than the 1st and 2nd-year students for all topics. The test result confirms a positive and strong relationship between students’ understanding of Lewis structure and molecular geometry for the three groups of students with ρ values of 0.979, 0.979, and 0.966 (< 0.01) for 1st, 2nd, and 3rd-year students, respectively.","PeriodicalId":33527,"journal":{"name":"JTK Jurnal Tadris Kimiya","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81641971","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}
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