ERFJORD, Ingvald. Mathematics teachers’ initial implementation of a digital tool package. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 21, n. 1, p. 27–45, 2016. DOI: 10.7146/nomad.v21i1.148716. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148716. Acesso em: 6 dec. 2025.