KANJANA NINNUAN; MONTREE WONGSAPHAN. Implementation of the Learning Management Model Based on Cognitive Development Theory to Enhance Mathematical Problem-Solving Ability for Prathomsuksa 6 Students. Journal of Educational Issues, [S. l.], v. 8, n. 2, p. pp. 58–71, 2024. DOI: 10.5296/jei.v8i2.19963. Disponível em: https://macrojournal.org/index.php/jei/article/view/1313. Acesso em: 23 nov. 2024.