JTK (Jurnal Tadris Kimiya)
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Exploration and Inventory of Banjar Etnochemistry as a Learning Source in Indonesia Senior High School Chemistry Context
Get PDFEthnochemistry 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
Integrating Scientific Principles with Character Development in the Student Worksheet on Change in Matter
Get PDFIntegration of scientific principles with character development in the student worksheet on change in matter is crucial for fostering a holistic understanding of chemistry, aligning academic knowledge with ethical considerations, and cultivating a well-rounded educational experience. The aim of this research is to develop character-integrated teaching materials in science subjects that are suitable for use as learning media. The development of character-integrated teaching materials in science subjects uses a 4D model, consisting of four stages (define, design, develop, and disseminate). Teaching materials developed are in the form of student worksheets. Data collection technique used a questionnaire with several instruments, which are material and media expert validation instruments, student worksheets eligibility instruments, and interview instruments. Analysis of the data using the calculation of the average, percentage, coefficient of validity, and descriptively. The results of the analysis of material expert validation data, obtained a validity level of 0.825 with a very valid category. Similarly, the results of the analysis of media expert validation data, obtained a validity level of 0.735 with a very valid category. The results of the analysis of the feasibility questionnaire filled in by the teacher obtained a score of 86.25% with a very decent category. It can be concluded that the student worksheets developed is very suitable to be used as a science learning media
Development and Evaluation of Laboratory Work Module to Enhance Student’s Knowledge in Molecular Visualization
Get PDFThis 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
Metacognitive Assesment Profile of Prospective Chemistry Educators
Get PDFMetacognitive awareness (MA) plays an important role in classroom learning as it enhances self-teaching capabilities on students. Therefore, it is necessary to know the level of awareness possessed by a teacher. This study aimed to describe metacognitive awareness profile of prospective chemistry educators. The method of research is descriptive quantitative using survey methods. The participants consisted of students undergoing their final semester. The instrument used was the MAIT-18 (Metacognitive-Awareness Inventory for Teachers-18). This instrument has two indicators, specifically cognitive knowledge and regulation. The results showed that students had a good level of cognitive knowledge and regulation with 80% and 77%, respectively. Therefore, the overall percentage of metacognitive awareness obtained was 80%. These results suggest that prospective chemistry educators have a good awareness of metacognition. This is indicates they can influence positive things on students, foster autonomy in teaching and learning, also can be an asset to be an effective teacher
Developing Problem-Based Learning Modules on Petroleum Materials in Chemistry Learning
Get PDFThe 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 77.52% 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
Inquiry Based Learning STEM Teaching Materials to Improve Students’ Thinking Skills in Stoichiometry
Get PDFIn stoichiometry learning process, mostly educators focus on calculations. Students are not invited to think more critically about stoichiometry application in life. This constraint makes teachers have to develop new learning models, including Inquiry Based Learning (IBL) model, and Science, Technology, Engineering, Mathematics (STEM) based on chemical literacy. This study aims to develop general chemistry teaching materials on stoichiometry using IBL and STEM models based on chemical literacy that are feasible (valid) and capable of improving students' LOTS and HOTS abilities. The development model used is the ADDIE model, with research subjects of 34 students. The result shows that stoichiometry teaching materials using the IBL STEM model based on chemical literacy are valid (feasible) to be applied in learning with an average score of 4.42 for the material aspect and 4.55 for the design aspect. The developed teaching materials have been proven to significantly improve students’ LOTS and HOTS abilities
Analysis of Argument-Driven Inquiry Activity in Chemistry Textbooks
Get PDFArgument-Driven Inquiry (ADI) in science learning can improve students' argumentation skills and understanding of concepts. In the textbooks, it is important to have ADI activities inside. This research aims to analyze ADI activities in the high school chemistry textbook Revised Curriculum 2013. This research used nine indicators of ADI activities: questions, evidence, student explanation, scientific theories, argumentation, communication and justification, analysis, connection, investigation report, and reflection. The research method used a descriptive instrument as an analysis sheet prepared based on ADI activities. Data was collected using documentation techniques and data analysis using content analysis of ADI activities. The results showed that the reliability test of the data obtained was 0.94 in the very good category. The ADI activity most found in textbooks is evidence activity, with a percentage of 31.25 Meanwhile, the textbook needs to explain question and answer and reflection activities. The textbook needs to increase ADI activities that support student-centered learning and teaching
Chemistry Students’ Understanding of Lewis Structure, VSEPR Theory, Molecular Geometry, and Symmetry: A Cross-Sectional Study
Get PDFMost 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 Ï values of 0.979, 0.979, and 0.966 (< 0.01) for 1st, 2nd, and 3rd-year students, respectively
Project Based Practicum Student Worksheet on Buffer Solution Material
Get PDFPracticum-based worksheets have been proven to improve students' thinking abilities. This research aims to describe the design and determine the feasibility of a project-based practical worksheet on buffer solution material. This research uses the Borg & Gall development model which consist of analyzing potential problems stage, data collection, product design, product marketing, product analysis and revision. The research subjects were 11th grade students from two different senior high school. The validation results show that the project learning-based student worksheet is classified as very valid with a score of 93 for small scale, 96 for medium scale, and 99 for large scale. The media was declared suitable for use based on the results of trials on small, medium and large scale students in the very good category with scores of 50, 51 and 55 respectively. This shows that project-based practical worksheets on buffer solution material are suitable for application to students
Project-Based Learning (PjBL) Worksheet on the Production of Whey Kefir Paper Soap
Get PDFStudents 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