Triyono, Ageng, Nurimani Nurimani, and Budiono Budiono. “Elementary School students’ Ability to Understand the Elements and Properties of Simple Flat Shapes”. Panicgogy International Journal 2, no. 2 (September 30, 2024): 44–60. Accessed October 30, 2025. https://nakiscience.com/index.php/pij/article/view/152.