“Improving Problem Solving Ability of 8th Grade Student through The Problem Based Learning Model”. Journal of Curriculum and Pedagogic Studies (JCPS) 1, no. 2 (December 31, 2022): 72–81. Accessed November 23, 2025. https://e-journal.lp2m.uinjambi.ac.id/ojp/index.php/jcps/article/view/1632.