ARDI, B. .; MUKHTAR, M.; RAJAGUKGUK, W. . DEVELOPMENT OF PROBLEM BASED LEARNING TOOLS TO IMPROVE MATHEMATICS PROBLEM-SOLVING ABILITY. Sensei International Journal of Education and Linguistic, [S. l.], v. 1, n. 4, p. 1020–1032, 2021. DOI: 10.53768/sijel.v1i4.57. Disponível em: https://www.sijel-journal.sensei-journal.com/jbo/article/view/57. Acesso em: 17 aug. 2026.