<![CDATA[This study develops a physics e-book integrating Indigenous Instruments (Kacaping and Puik-puik) to foster students’ critical thinking and digital literacy, and evaluates its feasibility and effectiveness in learning. The research adopts the Research and Development (R&D) method with the ADDIE model to design the learning product. The subjects were Class XI MIPA students at SMAN 9 Makassar, using a pretest-posttest control group design with two experimental classes and one control class. Data were collected through observation, interviews, tests, and questionnaires, while instruments included student response questionnaires, critical thinking, and digital literacy tests. Instrument validation employed Aiken’s V, and empirical testing used Quest software. Product effectiveness was analyzed using GLM (General Linear Model). The results indicate that the developed e-book on sound wave material is valid in terms of media and content, and limited trials demonstrated its ability to enhance critical thinking and digital literacy. MANOVA analysis further confirmed its effectiveness. Integrating Kacaping and Puik-puik not only contextualizes physics learning culturally but also provides an engaging and meaningful approach, supporting both cognitive skills and digital competence.]]>
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