VIHOLAINEN, A. Finnish mathematics teacher students’ informal and formal arguing skills in the case of derivative. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 13, n. 2, p. 71–92, 2008. DOI: 10.7146/nomad.v13i2.148119. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148119. Acesso em: 5 dec. 2024.