1. Bartolini Bussi, M. G. (1996). Mathematical discussion and perspective drawing in primary school. Educational Studies in Mathematics, 31(1–2), 11–41.
2. Boaler, J. (1997). Unpublished paper, King’s College, London.
3. Brown, C., Cooney, T. A., & Jones, D. (1990). Mathematics teacher education. In W. R. Houston (Ed.), Handbook of Research on Teacher Education (639–656). New York: Macmillan.
4. Brown, C. A., Stein, M. K., & Forman, E. A. (1996). Assisting teachers and students to reform the mathematics classroom. Educational Studies in Mathematics, 31(1–2), 63–93.
5. Carr, W. & Kemmis, S. (1986). Becoming critical: Education, knowledge and action research. Lewes: Falmer.