JOKO DEWANTO, I. The Effect of Project-Based Management Learning Implementation on Mathematical Problem-Solving Using Standard Indonesian in Fifth Grade Elementary School. The International Journal of Education Management and Sociology, [S. l.], v. 4, n. 4, p. 267–276, 2025. DOI: 10.58818/ijems.v4i4.240. Disponível em: https://www.ijems.id/index.php/ijems/article/view/240. Acesso em: 10 may. 2026.