Penerapan Model Pembelajaran Problem-Based Instruction dalam Pembelajaran Matematika. JURNAL INOVASI EDUKASI, [S. l.], v. 2, n. 1, p. 38–44, 2019. DOI: 10.35141/jie.v2i1.757. Disponível em: https://ejournal.unaja.ac.id/index.php/JIE/article/view/757. Acesso em: 21 nov. 2025.