NURHAMIDAH, R.; AKBAR, M. A. USE OF PROBLEM BASED LEARNING MODELS TO IMPROVE STUDENT LEARNING OUTCOMES AT SD NEGERI 1 BUMIRATU. Journal of Learning on History and Social Sciences, [S. l.], v. 1, n. 6, p. 69–77, 2024. DOI: 10.61796/ejlhss.v1i6.664. Disponível em: https://journal.antispublisher.id/index.php/EJLHSS/article/view/664. Acesso em: 20 mar. 2026.