BUTTRAMA, N. . Effects of Problem-based Learning Management on Mathematics Problem Solving Ability and Achievement for Mathayomsuksa 1 Students. Journal of Education Rajabhat Maha Sarakham University, Maha Sarakham, Thailand, v. 18, n. 3, p. 209–219, 2022. Disponível em: https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/254007. Acesso em: 9 dec. 2025.