ตังนู ป., and ภิรมจิตรผ่อง เ. “A Development of an Ability in Solving the Mathematical Numbers and Numerals by Using the Four Noble Truth- Based Approach for Mattayom Suksa One Students of Benjalukpittaya School under the Secondary Educational Service Area Office 28”. Ubon Ratchathani Journal of Research and Evaluation, vol. 3, no. 2, Aug. 2021, pp. 48-54, https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250945.