Asanti F, Abadi A, Nur Permadi R. Problem-Based Learning-Based Electronic Teaching Materials: The Effect on the Mathematical Problem-Solving Ability of Junior High School Students. ijmcr [Internet]. 11Jul.2025 [cited 23Oct.2026];13(7):5412-6. Available from: https://mail.ijmcr.in/index.php/ijmcr/article/view/991