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All Journal Jurnal Luminous: Riset Ilmiah Pendidikan Fisika Jurnal Riset Multidisiplin Edukasi
Dedi Sasmita
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RANCANG BANGUN E-BOOK FISIKA BERBASIS EDUCATION FOR SUSTAINABLE DEVELOPMENT (ESD) BERORIENTASI KOMPETENSI SAINS PADA MATERI PEMANASAN GLOBAL Felicia Amanda Putri; Winny Liliawati; Dedi Sasmita
Jurnal Riset Multidisiplin Edukasi Vol. 3 No. 1 (2026): Jurnal Riset Multidisiplin Edukasi (Januari 2026)
Publisher : PT. Hasba Edukasi Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71282/jurmie.v3i1.1577

Abstract

Scientific competence is an essential ability required of students to understand scientific phenomena, interpret science-based information, and apply it in decision-making in everyday life, particularly in the context of global issues such as climate change. However, various international studies, including the Programme for International Student Assessment (PISA), indicate that the level of scientific competence among Indonesian students remains relatively low. One contributing factor to this condition is the limited availability of contextual learning materials that are not yet integrated with sustainability issues. This study aims to develop a physics e-book based on Education for Sustainable Development (ESD), designed to support the enhancement of scientific competence on the topic of global warming. The study employs a Research and Development (R&D) method, which includes stages of needs analysis, product design, development, and limited trials. The feasibility of the e-book was evaluated through validation by subject-matter experts, media experts, and educational practitioners, while students’ responses were collected using questionnaires. The improvement in scientific competence was analyzed by comparing pretest and posttest results using N-gain calculations. The results indicate that the developed e-book meets feasibility criteria and receives positive responses from students. The e-book presents global warming material in a more systematic, contextual, and real world relevant manner. Therefore, the ESD-based physics e-book has the potential to be used as an alternative learning resource to support the development of students’ scientific competence.
DEVELOPMENT AND VALIDATION OF A TWO-TIER FORMAL REASONING TEST INSTRUMENT FOR HIGH SCHOOL STUDENTS ON THE TOPIC OF ROTATIONAL MOTION Windy Nerissa; Ridwan Efendi; Dedi Sasmita
Jurnal Luminous: Riset Ilmiah Pendidikan Fisika Vol. 7 No. 2 (2026): Juli 2026
Publisher : Program Studi Pendidikan Fisika FKIP Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/

Abstract

Physics learning requires deep scientific thinking skills, especially in complex topics like rotational dynamics. Unfortunately, current evaluation instruments are still dominated by single-tier formats prone to random guessing and mathematical calculation bias. This study aims to develop and validate a Two-Tier Multiple Choice diagnostic instrument free from mathematical interventions and analyzed using a polytomous Rasch model (Partial Credit Model / PCM). This exploratory research employs a Research and Development (R&D) approach based on Djemari Mardapi's model. The developed instrument consists of 11 paired questions (22 items). Content validity involved 7 expert panels, while empirical testing was conducted on 75 high school students (N=75). Data were analyzed using a 4-category polytomous model via Winsteps to evaluate empirical validity, dimensionality, and item fit. The results show that the instrument meets the essential unidimensionality requirement (1st contrast eigenvalue = 1.68). The calibration yielded ideal average infit and outfit MNSQ values (1.00 and 1.04) and a strong item reliability of 0.80. The monotonic progression of the average logit across the four scoring categories (-0.18, -0.06, 0.12, 0.43 logits) empirically validated the efficacy of the scoring structure. In conclusion, the application of polytomous Rasch analysis to two-tier tests accurately diagnoses students' formal reasoning barriers without being distorted by basic mathematical flaws
Co-Authors Efendi, Ridwan Felicia Amanda Putri Windy Nerissa Winny Liliawati