Wulandari R, Widowati A, Destrinelli D. Implementation Of Problem Based Learning Model In Improving Learning Outcomes In Ipas Grade IV Elementary School. IJSE [Internet]. 2025 May 31 [cited 2025 Jul. 28];5(2):25-30. Available from: https://www.ijsenet.com/index.php/IJSE/article/view/134