The development of outcome-based education (OBE)-oriented teaching materials through problem-based and project-based learning for the elementary science education course . Primary: Jurnal Pendidikan Guru Sekolah Dasar, [S. l.], v. 14, n. 6, p. 835–851, 2025. DOI: 10.33578/jpfkip.v14i6.835-851. Disponível em: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/86. Acesso em: 13 dec. 2025.