Jujur Sabdani Harefa, Sadiana Lase, Yakin Niat Telaumbanua, & Netti Kariani Mendrofa. (2026). Pengaruh Model Pembelajaran Concept Attainment Terhadap Kemampuan Pemahaman Konsep Matematis Siswa Kelas VII UPTD SMP Negeri 7 Gunungsitoli. Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences, 5(1), 108–120. https://doi.org/10.53696/venn.v5i1.424