Khatbanjong, suriyun, and Thanintra Painparadorn. “The Development of the Mathematics Learning Outcome on Equality of Mathayom 2 Students by Using STAD Technique”. An Online Journal of Education 18, no. 2 (December 31, 2023): OJED–18. Accessed May 15, 2024. https://so01.tci-thaijo.org/index.php/OJED/article/view/267325.