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STUDENTS' CONCEPTIONS, TROUBLESOME KNOWLEDGE, AND THRESHOLD CONCEPT OF CATALYST EFFECT ON REACTION RATE Wiji Wiji; Iqlima Rahayu; Tuszie Widhiyanti; Sri Mulyani
Jurnal Pengajaran MIPA Vol 27, No 1 (2022): JPMIPA: Volume 27, Issue 1, 2022
Publisher : Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18269/jpmipa.v27i1.49957

Student conceptions provide valuable information for understanding learning difficulties and provide insight into how they can be addressed appropriately. Analyzing students' conceptions can also provide insight into what concepts are troublesome or serve as concepts affecting learning. Using the Interview About Event-Mental Model Diagnostic Test (TDM-IAE), twenty-one high school and university students' conceptions, troublesome knowledge, and threshold concepts for understanding the effect of catalyst to reaction rate were identified. Students mostly held partial mental models or mental models with misconceptions in which three concepts were considered troublesome and threshold concepts for understanding the effect of catalyst on reaction rate.

Bahasa Inggris Dian Hasanah; Wiji Wiji; Sri Mulyani; Tuszie Widhiyanti
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 11 (2023): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i11.3811

This study aims to analyze students' mental models on the concept of chemical bonds using a two-tier mental model diagnostic test. A test with the first tier asking the content and the second tier asking the reasons for the answers at the first tier. The test used has been developed and declared valid with a degree of reliability 0.751. This research is qualitative research with a case study design. Students' mental models are categorized into complete mental models, partial mental models, mental models with misconceptions, and mental models with inconsistencies. In the concept of chemical bonds found 17, 9, 15, and 59% of students with complete, partial, misconceptions, and inconsistencies in mental models respectively. Most students have misconceptions by stating that ionic bonds are formed through atomization and the formation of bonding electrons by reason of the sharing of electrons in ionic crystals. In addition, students understand that the process of forming covalent bonds in oxygen and fluorine occurs because of the attraction between atoms which is greater than the repulsion between bonded atoms. Among the inconsistent concepts found are students explaining the phenomenon of solubility, boiling point, and melting point based on the concept of the electron cloud.

Bahasa Inggris Dian Hasanah; Wiji Wiji; Sri Mulyani; Tuszie Widhiyanti
Jurnal Penelitian Pendidikan IPA Vol 9 No 11 (2023): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i11.3811

This study aims to analyze students' mental models on the concept of chemical bonds using a two-tier mental model diagnostic test. A test with the first tier asking the content and the second tier asking the reasons for the answers at the first tier. The test used has been developed and declared valid with a degree of reliability 0.751. This research is qualitative research with a case study design. Students' mental models are categorized into complete mental models, partial mental models, mental models with misconceptions, and mental models with inconsistencies. In the concept of chemical bonds found 17, 9, 15, and 59% of students with complete, partial, misconceptions, and inconsistencies in mental models respectively. Most students have misconceptions by stating that ionic bonds are formed through atomization and the formation of bonding electrons by reason of the sharing of electrons in ionic crystals. In addition, students understand that the process of forming covalent bonds in oxygen and fluorine occurs because of the attraction between atoms which is greater than the repulsion between bonded atoms. Among the inconsistent concepts found are students explaining the phenomenon of solubility, boiling point, and melting point based on the concept of the electron cloud.

Pelatihan penjaminan mutu dan pembelajaran IPA dan Matematika berbasis STEM pada Kurikulum Merdeka dalam pengembangan Projek Penguatan Profil Pelajar Pancasila (P5) Adi Rahmat; Aan Hasanah; Irma Rahma Suwarma; Rini Solihat; Tuszie Widhiyanti; Ratni Purwasih
Abdimas Siliwangi Vol. 7 No. 1 (2024): Februari 2024
Publisher : IKIP SILIWANGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/as.v7i1.21565

Commitment to the Society (PKM) is aimed at sustainable training of teachers and can be one of the solutions to improve the quality of standard content and learning processes. One is through quality assurance training and learning IPA and mathematics-based stem on an independent curriculum in developing a project to strengthen the profile of students' Pancasila (P5). This PKM partner is the head of the school and the teacher of the core subjects of IPA in some high schools in the district of Tasikmalaya. This dedication phase is FGD with science teachers on needs analysis, potential and problem analysis, strengthening and supporting training preparation, reinforcement and support training implementation, follow-up studies, evaluation and reporting preparation. The result of this dedication is that the participants of the STEM-based learning activities declare to gain knowledge and experience in STEM-based learning. After this training, the participants declared that they were ready to try to implement STEM-based learning in their respective schools.

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