Jodtang, S. and Art-in, S. (2018) “Developing Grade 5 Students’ Mathematical Problem Solving Ability Using CIPPA Learning Model Together with Graphic Mapping”, Journal of Innovation and Learning Sciences, 12(3), pp. 87–99. available at: https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/241801 (accessed: 14 September 2026).