Ajeng Julia, Erna Suwangsih, & Puji Rahayu. (2025). The Influence of Problem Based Learning (PBL) Model on Students’ Mathematical Problem Solving Ability in Elementary Schools. Regulate: Jurnal Ilmu Pendidikan, Hukum Dan Bisnis, 2(1), 1–12. https://doi.org/10.61166/regulate.v2i1.15