noinuay, prajak. “Development of Creative Problem-Solving Abilities Using Phenomenon based Learning of Matthayomsuksa 6 Students”. Journal of Graduate Saket Review 6, no. 2 (November 11, 2021): 23–35. accessed September 15, 2026. https://so03.tci-thaijo.org/index.php/saketreview/article/view/254311.