Tang, Agnes Siew Yiing. “The Effectiveness of Problem-Based Learning on Form Two Students’ Academic Performance in Balanced Diet Subtopic”. Jurnal Pendidikan Sains dan Matematik Malaysia 14, no. 2 (September 26, 2024): 123–133. Accessed November 22, 2024. https://ojs.upsi.edu.my/index.php/JPSMM/article/view/9934.