Youarjin, Radeerad, and Bantita Insombat. “The effects of STEM education-based learning experience on problem-solving abilities of pre-school children”. Journal of Graduate Research 12, no. 1 (June 28, 2021): 83–93. accessed April 7, 2025. https://so02.tci-thaijo.org/index.php/banditvijai/article/view/248046.