Ayi Darmana, Rabiah Afifah Daulay, Haqqi Annazili Nasution, Marnida Yusfiani, Mutia Ardila, Chaerul Rochman
The integration of educational technologies in higher education has increased the use of digital learning resources such as e-books to support innovative instructional approaches. This study investigated the effect of e-book–mediated case method instruction on real-world case solving skills and religiosity among pre-service chemistry teachers, while controlling for prior chemistry knowledge. A quasi-experimental pretest–posttest control group design was employed involving 80 students from a Chemistry Education program at a public university in Indonesia. Participants were assigned to an experimental group (n = 40) receiving e-book–mediated case method instruction and a control group (n = 40) receiving conventional instruction. Data were collected using a prior chemistry knowledge test, a real-world case solving skills assessment scored with an analytic rubric, and a religiosity assessment. The data were analyzed using ANCOVA. The results revealed a significant effect of instructional method on real-world case solving skills, F(1,77) = 599.02, p <.001, partial η² = 0.886, indicating a very large effect. Instructional method also significantly affected religiosity, F(1,77) = 90.29, p <.001, partial η² = 0.540, indicating a large effect. Prior chemistry knowledge significantly predicted real-world case solving skills (p =.014) but not religiosity (p =.832). These findings suggest that e-book–mediated case method instruction can effectively enhance both cognitive and value-oriented learning outcomes in chemistry teacher education. The study highlights the potential of designing e-books as technology-mediated learning environments that integrate authentic cases and reflective prompts to promote analytical reasoning and value-based reflection. © The Author(s) 2026.
Department of Chemistry, State University of Medan, Medan, Indonesia; Department of Physics Education, Sunan Gunung Djati State Islamic University Bandung, Bandung, Indonesia
