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Development of STEM-based Static Fluid Teaching Materials assisted by LKPD Conceptual Change to Identify Mental Model Profiles of High School Students a) Program Studi S3 Pendidikan Ilmu Pengetahuan Alam, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia Abstract This study aims to develop STEM-based static fluid teaching materials assisted by LKPD Conceptual Change to identify the mental model profile of high school students. The research design used is 4D (Defining, Designing, Developing, & Disseminating). The participants involved in this study were 25 students (17 girls and 8 boys with an average age of 17 years) in one of the public high schools in Bandung. The research instrument used was a student response questionnaire which contained 10 questions and the FTDT-FS instrument consisted of 10 items that had been analyzed using Rasch analysis, namely by analyzing item fit, summary statistics, and person-item maps. The results showed that STEM-based Static Fluid Teaching Materials Assisted by LKPD Conceptual Change had a very good feasibility rate of 82.5%, besides the results of the trial of the FTDT-FS instrument in this teaching material produced four categories of student mental model profiles. The category scientific with a percentage of 52% on hydrostatic pressure, the category Synthesis-Partial Understanding has the largest percentage of 44.6% on the Archimedes law indicator, the category initial with a percentage of 13.3% on the Archimedes law indicator, and the category misconception on the Archimedes law indicator with a percentage of 12.6 %. Therefore, STEM-based static fluid teaching materials can be combined with LKPD Conceptual Change so that they can identify the mental model profile of high school students. Keywords: Teaching Materials, Static Fluids, STEM, LKPD Conceptual Change, Mental Model Topic: Physics Education |
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