DEVELOPMENT OF A GUIDEBOOK FOR BASED CHEMISTRY PRACTICES GREEN CHEMISTRY IN REACTION RATE MATERIALS

Practical activities are an important part of chemistry education. The chemistry practicum faced a variety of issues, including a lack of school facilities for performing the practicum and improperly managed chemical waste. As a reason, the research aims to develop and validate the feasibility of a green chemistry-based laboratory manual, as well as to assess how students and teachers respond to the final product. Research and Development (R&D) using the ADDIE model was employed as the research methodology. The reaction rate is the subject of this study. The laboratory manual developed is very feasible to implement in chemistry learning, according to the results of the analyzed data. Media expert lecturers provide an average score of 90 percent (very feasible) and material expert lecturers provide a score of 93,9 percent (very feasible). Students and teachers responded enthusiastically to the developed laboratory manual, with an average student reaction of 85 percent (very good) and a teacher response of 93,4 percent (very good)

Improving Students Science Process and Critical Thinking Skills Using Semi-Research Patterns Practicum

The old pattern of practicum implementation has less impact on increasing students’ science process skills and critical thinking. Therefore, implementing practicum with a semi-research pattern has been carried out by involving the lecturer and laboratory assistant. The subjects of this research were 40 students in Universitas Negeri Medan. The method is classroom action research consisting of two cycles. Each cycle includes planning, action, reflection, and evaluation. Instrument’s research is the observation sheet and essay test. The results of descriptive data analysis show that implementing practicum with a semi-research pattern can improve students’ science process critical thinking skills, especially in planning experiments by 88.3% and critical thinking skills in evaluating by 82.3%.

Fostering Scientific Literacy through Integrated STEM Teaching Materials on Basic Laws of Chemistry

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

Analysis of Rasch Model for the Validation of Chemistry National Exam Instruments

Information about score obtained from a test is often interpreted as an indicator of the student's ability level. This is one of the weaknesses of classical analysis that are unable to provide meaningful and fair information. The acquisition of the same score if it comes from a test item with a different level of difficulty, must show different abilities. Analysis of the Rasch model will overcome this weakness. The purpose of this study was to analyze the quality of the items by validating the national chemistry exam instrument using the Rasch model. The research sample was 212 new students of the Department of Chemistry at the State University of Medan. The data collected was in the form of respondent's answer data to the 2013 chemistry UN questions, which amounted to 40 items multiple choice and uses the documentation method. Data analysis technique used the Rasch Model with Ministep software. The results of the analysis show the quality of the Chemistry National Exam (UN) questions is categorized as very good based on the following aspects: unidimension, item fit test, person map item, difficulty test level, person and item reliability. There is one item found to be gender bias, in which men benefit more than women. The average chemistry ability of respondents is above the average level of difficulty of the test item

The Correlation of Mathematics Ability and Chemistry Analysis Ability to Improve Student Learning Outcomes in Buffer Solution

This study aims to determine the linear and significant relationship between mathematical ability and chemistry learning results; chemical analytical abilities and learning result: association between students' chemistry learning outcomes and mathematical skills and chemical analysis abilities. This type of research is causal research with a quasi-experimental research design. Students in this study were given tests in the form of mathematical ability instruments, chemical analysis abilities, and buffer solution tests. This study found a linear and significant relationship between mathematical ability and students' learning outcomes, a linear and meaningful relationship between chemistry analysis ability and students' learning outcomes, and a significant relationship between mathematical knowledge and chemistry ability. REFERENCESBain, K., Rodriguez, J. M. G., & Towns, M. H. (2019). Chemistry and mathematics: Research and frameworks to explore student reasoning. Journal of Chemical Education, 96(10), 2086-2096.Becker, N., & Towns, M. (2012). Students' understanding of mathematical expressions in physical chemistry contexts: An analysis using Sherin's symbolic forms. Chemistry Education Research and Practice, 13(3), 209-220.Cahyono, T., Masykuri, M., & Ashadi, A. (2016). Kontribusi Kemampuan Numerik Dan Kreativitas Terhadap Prestasi Belajar Siswa Pada Materi Pokok Hidrolisis Kelas XI MIA 1 Dan XI MIA 5 SMA Negeri 2 Karanganyar Tahun Pelajaran 2015/2016. Jurnal Pendidikan Kimia Universitas Sebelas Maret, 5(2), 81–88.Cholifah, E. N. U., Yamtinah, S., & VH, E. S. (2019). Hubungan Kemampuan Analisis dan Matematika dengan Prestasi Belajar Siswa pada Materi Larutan Penyangga Kelas XI SMA Negeri 4 Surakarta. Jurnal Pendidikan Kimia, 8(2), 179. https://doi.org/10.20961/jpkim.v8i2.25340Daniyati, N. A., & Sugiman. (2015). Hubungan Antara Kemampuan Verbal , Kemampuan Interpersonal , dan Minat Belajar dengan Prestasi Belajar Matematika. Pthagoras : Jurnal Pendidikan Indonesia, 10, 50–60.Fitriani, F., Wirawan Fadly, & Ulinnuha Nur Faizah. (2021). Analisis Keterampilan Berpikir Analitis Siswa pada Tema Pewarisan Sifat. Jurnal Tadris IPA Indonesia, 1(1), 55–67. https://doi.org/10.21154/jtii.v1i1.64Habiddin, H., Farizka, L., & bin Shuid, A. N. (2023). Chemistry Students’ Understanding of Lewis Structure, VSEPR Theory, Molecular Geometry, and Symmetry: A Cross-Sectional Study. JTK (Jurnal Tadris Kimiya), 8(1), 1–9.Habiddin, H., & Nagol, I. L. (2023). Chemistry Students’ Mathematics Ability and Their Understanding of Buffer Solution. Jurnal Penelitian Pendidikan IPA, 9(10 SE-Research Articles), 8140–8145. https://doi.org/10.29303/jppipa.v9i10.3682Malahayati, E. N., Corebima, A. D., & Zubaidah, S. (2015). Hubungan Keterampilan Metakognitif dan Kemampuan Berpikir Kritis dengan Hasil Belajar Biologi Siswa SMA dalam Pembelajaran Problem Based Learning (PBL). Jurnal Pendidikan Sains, 3(4), 178–185.Maysaroh, S., Luliani, E., & Wulandari, A. (2021). Hubungan Pemahaman Konsep Matematika terhadap Hasil Belajar Kimia. 214–221.Panggabean, F. T. M., Purba, J., Sutiani, A., & Panggabean, M. A. (2022). Analisis Hubungan Antara Kemampuan Matematika dan Analisis Kimia Terhadap Hasil Belajar Kimia Materi Kesetimbangan Kimia. Jurnal Inovasi Pembelajaran Kimia, 4(1), 18–30.Silitonga, P. M., & Sitepu, R. Y. (2022). Hubungan Kemampuan Matematika dan Kemampuan Fisika Terhadap Hasil Belajar Siswa Pada Materi Termokimia. Jurnal Inovasi Pembelajaran Kimia, 4(1), 10–17.Suliman, Sarwanto, & Suparmi. (2017). Pendekatan Saintifik Pada Pembelajaran Fisika Dengan Metode Eksperimen dan Demonstrasi Ditinjau Dari Kemampuan Berpikir Abstrak dan Kemampuan Analisis Siswa. Jurnal Inkuiri, 6(1), 21–30.Wahyuni, A., & Kurniawan, P. (2018). Hubungan Kemampuan Berpikir Kreatif Terhadap Hasil Belajar Mahasiswa. Jurnal Matematika, 17(2), 1–8. https://doi.org/10.29313/jmtm.v17i2.4114Wijanarko, Y. (2017). Model Pembelajaran Make A Match. Jurnal Taman Cendekia, 1(1), 52–59.Yuliastusi. (2020). Peningkatan Ketuntasan Hasil Belajar Kimia pada Materi Hidrokarbon Melalui Pembelajaran Deduktif Siswa Kelas XI IPA Di SMA Negeri 4 Kota Denpasar. BRILIANT: Jurnal Riset Dan Konseptual, 5(1), 172–179

Inquiry Based Learning STEM Teaching Materials to Improve Students’ Thinking Skills in Stoichiometry

In 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

The Correlation of Mathematics Ability and Chemistry Analysis Ability to Improve Student Learning Outcomes in Buffer Solution

This study aims to determine the linear and significant relationship between mathematical ability and chemistry learning results; chemical analytical abilities and learning result: association between students' chemistry learning outcomes and mathematical skills and chemical analysis abilities. This type of research is causal research with a quasi-experimental research design. Students in this study were given tests in the form of mathematical ability instruments, chemical analysis abilities, and buffer solution tests. This study found a linear and significant relationship between mathematical ability and students' learning outcomes, a linear and meaningful relationship between chemistry analysis ability and students' learning outcomes, and a significant relationship between mathematical knowledge and chemistry ability.   REFERENCES Bain, K., Rodriguez, J. M. G., & Towns, M. H. (2019). Chemistry and mathematics: Research and frameworks to explore student reasoning. Journal of Chemical Education, 96(10), 2086-2096. Becker, N., & Towns, M. (2012). Students' understanding of mathematical expressions in physical chemistry contexts: An analysis using Sherin's symbolic forms. Chemistry Education Research and Practice, 13(3), 209-220. Cahyono, T., Masykuri, M., & Ashadi, A. (2016). Kontribusi Kemampuan Numerik Dan Kreativitas Terhadap Prestasi Belajar Siswa Pada Materi Pokok Hidrolisis Kelas XI MIA 1 Dan XI MIA 5 SMA Negeri 2 Karanganyar Tahun Pelajaran 2015/2016. Jurnal Pendidikan Kimia Universitas Sebelas Maret, 5(2), 81–88. Cholifah, E. N. U., Yamtinah, S., & VH, E. S. (2019). Hubungan Kemampuan Analisis dan Matematika dengan Prestasi Belajar Siswa pada Materi Larutan Penyangga Kelas XI SMA Negeri 4 Surakarta. Jurnal Pendidikan Kimia, 8(2), 179. https://doi.org/10.20961/jpkim.v8i2.25340 Daniyati, N. A., & Sugiman. (2015). Hubungan Antara Kemampuan Verbal , Kemampuan Interpersonal , dan Minat Belajar dengan Prestasi Belajar Matematika. Pthagoras : Jurnal Pendidikan Indonesia, 10, 50–60. Fitriani, F., Wirawan Fadly, & Ulinnuha Nur Faizah. (2021). Analisis Keterampilan Berpikir Analitis Siswa pada Tema Pewarisan Sifat. Jurnal Tadris IPA Indonesia, 1(1), 55–67. https://doi.org/10.21154/jtii.v1i1.64 Habiddin, H., Farizka, L., & bin Shuid, A. N. (2023). Chemistry Students’ Understanding of Lewis Structure, VSEPR Theory, Molecular Geometry, and Symmetry: A Cross-Sectional Study. JTK (Jurnal Tadris Kimiya), 8(1), 1–9. Habiddin, H., & Nagol, I. L. (2023). Chemistry Students’ Mathematics Ability and Their Understanding of Buffer Solution. Jurnal Penelitian Pendidikan IPA, 9(10 SE-Research Articles), 8140–8145. https://doi.org/10.29303/jppipa.v9i10.3682 Malahayati, E. N., Corebima, A. D., & Zubaidah, S. (2015). Hubungan Keterampilan Metakognitif dan Kemampuan Berpikir Kritis dengan Hasil Belajar Biologi Siswa SMA dalam Pembelajaran Problem Based Learning (PBL). Jurnal Pendidikan Sains, 3(4), 178–185. Maysaroh, S., Luliani, E., & Wulandari, A. (2021). Hubungan Pemahaman Konsep Matematika terhadap Hasil Belajar Kimia. 214–221. Panggabean, F. T. M., Purba, J., Sutiani, A., & Panggabean, M. A. (2022). Analisis Hubungan Antara Kemampuan Matematika dan Analisis Kimia Terhadap Hasil Belajar Kimia Materi Kesetimbangan Kimia. Jurnal Inovasi Pembelajaran Kimia, 4(1), 18–30. Silitonga, P. M., & Sitepu, R. Y. (2022). Hubungan Kemampuan Matematika dan Kemampuan Fisika Terhadap Hasil Belajar Siswa Pada Materi Termokimia. Jurnal Inovasi Pembelajaran Kimia, 4(1), 10–17. Suliman, Sarwanto, & Suparmi. (2017). Pendekatan Saintifik Pada Pembelajaran Fisika Dengan Metode Eksperimen dan Demonstrasi Ditinjau Dari Kemampuan Berpikir Abstrak dan Kemampuan Analisis Siswa. Jurnal Inkuiri, 6(1), 21–30. Wahyuni, A., & Kurniawan, P. (2018). Hubungan Kemampuan Berpikir Kreatif Terhadap Hasil Belajar Mahasiswa. Jurnal Matematika, 17(2), 1–8. https://doi.org/10.29313/jmtm.v17i2.4114 Wijanarko, Y. (2017). Model Pembelajaran Make A Match. Jurnal Taman Cendekia, 1(1), 52–59. Yuliastusi. (2020). Peningkatan Ketuntasan Hasil Belajar Kimia pada Materi Hidrokarbon Melalui Pembelajaran Deduktif Siswa Kelas XI IPA Di SMA Negeri 4 Kota Denpasar. BRILIANT: Jurnal Riset Dan Konseptual, 5(1), 172–179

GUIDED INQUIRY-BASED MODULE DEVELOPMENT INTEGRATED SCIENCE LITERATURE ON THERMOCYMIA MATERIALS

This research is a type of Research and Development research that aims to develop a guided inquiry-based module that integrates scientific literacy in thermochemical material. The subject of this research is an integrated inquiry-based module on scientific literacy. The object of this research is thermochemical material. This study refers to the Borg and Gall steps but is limited to 5 steps or stages. The steps begin with data and information collection, planning the development of guided inquiry-based modules, initial product development, initial field trials, and revision of test results. The module that has been developed is validated by 3 material expert validators and 3 media expert validators. Then, the module was tested on 2 teachers and students of class XII-IPA 4 totaling 34 students of SMA Negeri 1 Tebing Syahbandar to see the attractiveness of the module with the data collection method using a research instrument in the form of a questionnaire. The results showed that the guided inquiry-based module integrated scientific literacy on thermochemical material was declared feasible after being validated by obtaining an average percentage of material experts of 84.92% with a feasible category and an average percentage of media experts of 84.93% with feasible category. The average percentage of teacher responses of 93.45% with a very interesting category and the average percentage of student responses of 82.52 % with a very interesting category

Laboratorium kimia pengelolaan dan manajemen

xi, 54 hlm. : ilus. ; tab. ; 26 cm

Laboratorium kimia : pengelolaan dan manajemen

xi, 54 p. : ill.; 29 c