Asanti, Fitri, Agus Abadi, and Riki Nur Permadi. 2025. “Problem-Based Learning-Based Electronic Teaching Materials: The Effect on the Mathematical Problem-Solving Ability of Junior High School Students”. International Journal Of Mathematics And Computer Research 13 (7), 5412-16. https://doi.org/10.47191/ijmcr/v13i7.10.