AROPIQ, P. R.; NASRULLAH, A.; YENDRA, N. Enhancing Problem-Solving and Self-Directed Learning in 8th-Grade Students through a Problem-Based Learning Approach. Progressive of Cognitive and Ability, [S. l.], v. 4, n. 1, p. 30–38, 2025. DOI: 10.56855/jpr.v4i1.1325. Disponível em: https://journals.eduped.org/index.php/jpr/article/view/1325. Acesso em: 27 jun. 2025.