HUSNA, F. . Improving the Ability to Understand Mathematical Concepts Through Problem-Based Learning (PBL) and Manipulatives in Class V Students of MIN 2 Pariaman City. Journal of Development Education and Learning (JODEL), [S. l.], v. 3, n. 2, p. 291–295, 2025. Disponível em: https://jodel.or.id/index.php/jodel/article/view/135. Acesso em: 6 nov. 2025.