The Influence of The Problem-Based Learning (PBL) Model on The Learning Outcomes of Fourth Grade Students in Social Studies at SD N 040457 Berastagi. Journal of Pedagogi, [S. l.], v. 1, n. 5, p. 31–36, 2024. DOI: 10.62872/nq4gb549. Disponível em: https://nawalaeducation.com/index.php/JOP/article/view/702. Acesso em: 9 apr. 2025.