Sappaile BI, Nisak SK, Afandi A, Anshoriyah S, Mardiati M. Enhancing Critical Thinking Skills in Mathematics Education: Integrating Problem-Based Learning in Seconday Schools. IJERE [Internet]. 2024 Sep. 28 [cited 2024 Oct. 28];3(2):731-7. Available from: https://ejournal.ipinternasional.com/index.php/ijere/article/view/1085