RAMAN SUNDSTRÖM, M.; ZANDIEH, M. The case of Brandon: the dual nature of key ideas in the classroom. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 14, n. 2, p. 29–48, 2009. DOI: 10.7146/nomad.v14i2.148175. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148175. Acesso em: 9 jan. 2025.