VIITALA, H. A tool for understanding pupils’ mathematical thinking. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 22, n. 2, p. 5–31, 2017. DOI: 10.7146/nomad.v22i2.148794. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148794. Acesso em: 16 feb. 2025.