Mapracha, Kantapon, Teerada Hudcharoen, and Poonyapon Chanfoy. “The Studying Mathematics Learning Achievement on Function by Using Self-Study Activity Packages of Grade 10 Room 7 Students Taweethapisek School”. Journal of Modern Learning Development 6, no. 5 (June 4, 2021): 1–11. Accessed May 1, 2024. https://so06.tci-thaijo.org/index.php/jomld/article/view/249104.