Nazara, Erlina, and Izwita Dewi. “The Effect of Problem-Based Learning (PBL) Using Video-Based Learning (VBL) on Mathematics Students’ Problem-Solving Ability in SMK Negeri 14 Medan”. Jurnal Cendekia : Jurnal Pendidikan Matematika 8, no. 1 (December 9, 2023): 1-12. Accessed May 20, 2026. https://j-cup.org/index.php/cendekia/article/view/1961.