Investigating Modality, Redundancy and Signaling Principles with Abstract and Concrete Representation. International Journal of Education in Mathematics, Science and Technology, [S. l.], v. 8, n. 2, p. 131–145, 2020. DOI: 10.46328/ijemst.v8i2.710. Disponível em: https://ijemst.com/index.php/ijemst/article/view/453. Acesso em: 29 jun. 2025.