WANG, Baoxing. Practical Applications of the Concrete Operational Stage in Jean Piaget’s Theory of Cognitive Development. Journal of Educational Research and Policies, [S. l.], v. 7, n. 11, p. 97–99, 2025. DOI: 10.53469/jerp.2025.07(11).19. Disponível em: https://bryanhousepub.com/index.php/jerp/article/view/2801. Acesso em: 14 jan. 2026.