Khatbanjong, suriyun, and Thanintra Painparadorn. 2023. “The Development of the Mathematics Learning Outcome on Equality of Mathayom 2 Students by Using STAD Technique”. An Online Journal of Education 18 (2):OJED-18. https://so01.tci-thaijo.org/index.php/OJED/article/view/267325.