PAASONEN, J. What on earth is a straight line? What can we learn from an epistemological episode in eighth grade?. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 2, n. 3-4, p. 47–56, 1994. DOI: 10.7146/nomad.v2i3-4.146135. Disponível em: https://tidsskrift.dk/NOMAD/article/view/146135. Acesso em: 9 jan. 2025.