PALAD, Marcel-Ono. Mathematics Achievement of Grade 9 Students During the Implementation of Structured Problem-Solving Instruction. Journal of Interdisciplinary Perspectives, [S. l.], v. 4, n. 6, p. 278–292, 2026. DOI: 10.69569/jip.2026.017. Disponível em: https://jippublication.com/index.php/jip/article/view/2988. Acesso em: 3 oct. 2026.