In H. Krzywacki, M. Hähkiöniemi, E. Haataja, M. Hannula, & P. Hästö (Eds.), Proceedings of the 49th Conference of the International Group for the Psychology of Mathematics Education: General Contributions (p. 408). PME.
In H. Krzywacki, M. Hähkiöniemi, E. Haataja, M. Hannula, & P. Hästö (Eds.), Proceedings of the 49th Conference of the International Group for the Psychology of Mathematics Education: General Contributions (p. 408). PME.