PALM KAPLAN, Kristina; PRYTZ, Johan. Conservative and transformative changes in algebra in Swedish lower secondary textbooks 1995–2015. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 25, n. 2, p. 49–70, 2020. DOI: 10.7146/nomad.v25i2.149051. Disponível em: https://tidsskrift.dk/NOMAD/article/view/149051. Acesso em: 5 dec. 2025.