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Happy Lumbantobing, Mayor M. H. Manurung, Pitriana Tandililing, Agnes Teresa Panjaitan, Rina Ananta Sumawardani Sitepu. Students’ Abilities and Activities Learning in Mathematics at Junior High School: The Discovery Learning Model Using a Scientific Approach. IJSBAR. 2025;77(1):38-49. Accessed November 7, 2025. https://gssrr.org/JournalOfBasicAndApplied/article/view/17463