Ogunsola OA, Adelana OP, Adewale KA. Effect of Problem-Based Learning Approach on Students’ Academic Performance in Senior Secondary Mathematics. J. Sci. Math. Lett. [Internet]. 2021 Jul. 28 [cited 2025 Apr. 7];9(2):75-8. Available from: https://ejournal.upsi.edu.my/index.php/JSML/article/view/5261