Low levels of disaster literacy and critical thinking among students highlight the need for innovative and contextualized learning media in science education. This research develops and evaluates the effectiveness of a flood disaster mitigation science E-comic to enhance students’ critical thinking and disaster preparedness. The study employed a Research and Development (R&D) approach using the 4D model (Define, Design, Develop, and Disseminate). Validation results indicated that the E-comic is feasible as a learning medium, with CVI values of 0.89 (media) and 1.00 (content). The use of the E-comic effectively improved students’ critical thinking skills and disaster preparedness, as evidenced by high N-Gain scores and significant statistical results. The improvement was consistently observed across all disaster preparedness indicators, including knowledge, attitudes, and response planning. The study concludes that the flood disaster mitigation E-comic is both effective and feasible as a contextual science learning medium. The integration of flood-related physical science concepts demonstrates how contextualized media can strengthen scientific literacy in disaster education.
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