Salvira, Muna, Firda Az zahra, Arief Muttaqiin, and Aulia Azhar. “The Effect of Problem Based Learning on Students’ Learning Outcomes in the Topic of Matter and Its Changes”. SEMESTA: Journal of Science Education and Teaching 8, no. 1 (August 3, 2025): 49–54. Accessed January 2, 2026. https://semesta.ppj.unp.ac.id/index.php/semesta/article/view/555.