Improving Student Mathematics Understanding through Problem-Based Learning. International Journal of Scientific Research and Management (IJSRM), [S. l.], v. 8, n. 06, p. 1442–1447, 2020. DOI: 10.18535/ijsrm/v8i06.el05. Disponível em: https://ijsrm.net/index.php/ijsrm/article/view/2781.. Acesso em: 7 may. 2024.