Mufaricha Ulia Anjani, Akhmad Jufriadi, and Qomariyah. “Improving Elementary School Students’ Understanding of the Concept of Flat Geometry Elements Through an Open-Ended Approach”. Journal of Practice Learning and Educational Development 6, no. 2 (June 1, 2026): 2197–2207. Accessed October 9, 2026. https://www.digitalpress.gaes-edu.com/index.php/jpled/article/view/1246.