Kartin Usman, Abdul Wahab Abdullah, Abas Kaluku, Tristanti Anggraini Usman. The Effect of Problem Based Learning Model on Students’ Mathematical Problem Solving Ability on Social Arithmetic Materials at SMP Negeri 2 Limboto. TURCOMAT [Internet]. 2021Aug.15 [cited 2024Dec.22];12(14):1683-92. Available from: https://turcomat.org/index.php/turkbilmat/article/view/10512