LANDONG, A.; AYUNINGSIH , D.; DITA, I. Development of fourth grade math teaching materials using the PBL model on student learning outcomes. Cendikia : Media Jurnal Ilmiah Pendidikan, [S. l.], v. 13, n. 6, p. 943-953, 2023. DOI: 10.35335/cendikia.v13i6.3824. Disponível em: https://iocscience.org/ejournal/index.php/Cendikia/article/view/3824. Acesso em: 22 aug. 2026.