The Influence of Differentiated Learning and Models Problem Based Learning on Mathematical Problem-Solving Ability at SDN 5 Gondang. JISIP [Internet]. 2026 Jul. 1 [cited 2026 Sep. 19];10(3):1561-7. Available from: https://ejournal.mandalanursa.org/index.php/JISIP/article/view/10530