CHOMJUMJUNG, K.; PHARDTHAISONG, P. The Development of Problem Solving Ability in Mathematics of Muthayomsuksa 3 Students by Using Open Approach. Journal of Roi Et Rajabhat University, [S. l.], v. 16, n. 1, p. 106–116, 2022. Disponível em: https://so03.tci-thaijo.org/index.php/reru/article/view/246601. Acesso em: 26 apr. 2024.