Saining, Munirah, Rusmayadi Rusmayadi, Muhammad Akil Musi, and Abdul Halik. “The Effect of Problem-Based Learning Model on the Ability to Recognize Geometric Shapes in Children Aged 5-6 Years”. Pancasila International Journal of Applied Social Science 3, no. 01 (January 27, 2025): 129–140. Accessed March 18, 2025. https://risetpress.com/index.php/pancasila/article/view/1384.