“THE DIFFERENCE PROBLEM SOLVING SKILLS OF PHYSICS WHO ARE TAUGHT USING THE PROJECT BASED LEARNING MODEL WITH PROBLEM BASED LEARNING”. Jurnal Pendidikan Fisika 9, no. 2 (December 31, 2020): 68–72. Accessed March 20, 2026. https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/14061.