FITRI, M. Evaluation of the Effectiveness of Strategies for Developing Mathematical Problem-Solving Abilities. EDUCTUM: Journal Research, [S. l.], v. 2, n. 4, p. 120–123, 2023. DOI: 10.56495/ejr.v2i4.426. Disponível em: https://jurnal.larisma.or.id/index.php/EJR/article/view/426. Acesso em: 2 aug. 2025.