NISA’, K.; NASRULLAH, A.; HIDAYAT, A.; MAHUDA, I.; BHAT , I. A. Problem-Based Learning in Improving Problem-Solving Ability and Interest in Learning Mathematics: An Empirical Study. International Journal of Mathematics and Mathematics Education (IJMME), [S. l.], v. 1, n. 3, p. 206–217, 2023. DOI: 10.56855/ijmme.v1i3.725. Disponível em: https://journals.eduped.org/index.php/IJMME/article/view/725. Acesso em: 6 oct. 2025.