ว่องไว ลัดดาวรรณ, นันทะศรี วันเพ็ญ, and เพ็งสวัสดิ์ วาโร. “The Development of Mathematics Learning Management Model for Sixth Grade Students in Schools under Sakon Nakhon Primary Educational Service Area Office 1”. Journal of Roi Et Rajabhat University 13, no. 3 (December 24, 2019): 29–36. Accessed April 26, 2024. https://so03.tci-thaijo.org/index.php/reru/article/view/180340.