Galicha, Sharon, and Metelyn Lazaro. “Acceptability of Paper Folding-Based Instructional Material in Geometry”. Romblon State University Research Journal 4, no. 2 (January 18, 2023): 10–16. Accessed May 28, 2026. https://ojs.rsu.edu.ph/index.php/rsurj/article/view/66.