Implementation of Cognitive Theory Learning in Increasing the Interest in Learning Mathematics of Grade 5 Students of State Elementary School 2 Tukadsumaga. Psikoborneo [Internet]. 2025 Feb. 19 [cited 2026 Oct. 6];13(1):20-7. Available from: https://e-journals.unmul.ac.id/index.php/psikoneo/article/view/14408