DOUNGPHUMEK, N.; WIWANTHAMONGKON, K.; PUNKONG, N. The Development of Training Kits to Enhance Learning Outcomes and Mathematical Problem - Solving Skills According to the Vygotsky and Feuerstein Theoretical Frameworks for Mathayom Suksa 3 Students. STOU Education Journal, [S. l.], v. 19, n. 1, p. 19–34, 2026. Disponível em: https://so05.tci-thaijo.org/index.php/edjour_stou/article/view/288014. Acesso em: 16 sep. 2026.