Lazuardi, E., and A. Asmin. “The Effect of Applying the Problem-Based Learning Model on the Mathematical Problem-Solving Ability of Grade X Students at MAS Madinatussalam, Sei Rotan Village”. Edumaspul: Jurnal Pendidikan, Vol. 9, no. 2, Oct. 2025, pp. 1050-7, doi:10.33487/edumaspul.v9i2.9117.