HAARA, F. O.; SMITH, K. Practical activities in mathematics teaching – mathematics teachers’ knowledge based reasons. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 14, n. 3, p. 33–54, 2009. DOI: 10.7146/nomad.v14i3.148208. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148208. Acesso em: 8 jan. 2025.