Laonok, Manchasu, and Autthapon Inthasena. 2022. “The Problem-based Learning Management in the Social Studies for Analytical Thinking Development of Grade 5 Students”. Journal of Education Rajabhat Maha Sarakham University 19 (2). Maha Sarakham, Thailand:213-23. https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/258629.