YU-PIAM, M.; LAORPAKSIN, J. Development of Mathematical Activity Packages Using Problem-Based Learning to Enhance Mathematical Communication Ability. An Online Journal of Education, [S. l.], v. 21, n. 2, p. 1–19, 2026. Disponível em: https://so01.tci-thaijo.org/index.php/OJED/article/view/288122. Acesso em: 27 aug. 2026.