Laohawiroongool P, ดอกเทียน ณ. The Effects of Mathematical Learning Activity on Set of the 10th Grade Students by Using Context – based Learning Approach. KRUPAK [internet]. 2025 Aug. 30 [cited 2026 Sep. 22];2(2):18-24. available from: https://so17.tci-thaijo.org/index.php/KRUPAK/article/view/1333