ตังนู ป, 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. ubonreseva [internet]. 2021 Aug. 27 [cited 2026 Oct. 3];3(2):48-54. available from: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250945