Sukma, Garinda. “Application of Problem Based Learning (PBL) Learning Model in Improving Student Learning Outcomes in Natural Sciences Subjects of Material Changes in Objects in Class II MI Al-Islah Sidoarjo”. Indonesian Journal of Science Learning (IJSL) 1, no. 1 (June 26, 2020): 26–31. Accessed February 26, 2026. https://jurnalftk.uinsa.ac.id/index.php/IJSL/article/view/636.