Ogunsola, Obaseye A., Owolabi Paul Adelana, and Kayode A. Adewale. “Effect of Problem-Based Learning Approach on Students’ Academic Performance in Senior Secondary Mathematics”. Journal of Science and Mathematics Letters 9, no. 2 (July 28, 2021): 75–85. Accessed March 28, 2024. https://ejournal.upsi.edu.my/index.php/JSML/article/view/5261.