Phansuwan, P., & Lertdechapat, K. (2026). Real-Life Problems and Real-Life Problem Solving Ability of High School Students: A Case Study of a Private All-Boys Boarding School. An Online Journal of Education, 21(2), 1–18. retrieved from https://so01.tci-thaijo.org/index.php/OJED/article/view/287400