Chaovasetthakul R. Processes of Problem Solving in School Mathematics . J. Thail. Soc. Math. Educ. [internet]. 2026 Sep. 4 [cited 2026 Sep. 10];1(1):# 91 - 95. available from: https://so11.tci-thaijo.org/index.php/JTSMEd/article/view/2335