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 [Internet]. 2024 Oct. 26 [cited 2025 Nov. 30];1(5):31-6. Available from: https://ejournal-nawalaedu.com/index.php/JOP/article/view/702