Chalermsri, K. and Poonpaiboonpipat, W. (2024) “Enhancing Habits of Mind of Mathematical Thinker and Problem-Solving Skills through the Open Approach”, Research Community and Social Development Journal. Nakhon Ratchasima, Thailand, 18(3), pp. 468–482. doi: 10.14456/nrru.2024.27.