PAPPAS, Marios A.; DRIGAS, Athanasios S.; POLYCHRONI, Fotini. An Eight-Layer Model for Mathematical Cognition. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 13, n. 10, p. pp. 69–82, 2018. DOI: 10.3991/ijet.v13i10.8633. Disponível em: https://online-journals.org/index.php/i-jet/article/view/8633. Acesso em: 2 may. 2024.