Kleve, Bodil, and Ida Heiberg Solem. “Aspects of a teacher’s Mathematical Knowledge in His Orchestration of a Discussion about Rational Numbers”. NOMAD Nordic Studies in Mathematics Education 19, no. 3-4 (November 19, 2014): 119–134. Accessed January 8, 2025. https://tidsskrift.dk/NOMAD/article/view/148651.