1. Anichini, G., Arzarello, F., Ciarrapico, L., & Robutti, O. (Eds.). (2004). New mathematical standards for the school from 5 through 18 years, the curriculum of mathematics from 6 to 19 years, on behalf of UMI-CIIM, MIUR (edition for ICME 10). Bologna: UMI.
2. Arzarello, F., Bazzini, L., & Chiappini, G. (2001). A model for analysing algebraic processes of thinking. In R. Sutherland, T. Rojano, A. Bell, & R. Lins (Eds.), Perspectives on school algebra (pp. 61–81). Dordrecht: Kluwer.
3. Arzarello, F., Bernardi, C., Borgi, R., Ciarrapico, L., De Santis, F., Naldini, M., et al. (Eds.) (2012). m@t.abel mathematics for students on the threshold of the third millennium. http://mediarepository.indire.it/iko/uploads/allegati/M7PWITOE.pdf . Accessed 23 Aug 2013.
4. Boero, P., Garuti, R., & Lemut, E. (2007). Approaching theorems in grade VIII. In P. Boero (Ed.), Theorems in school (pp. 250–264). Rotterdam: Sense.
5. Garuti, R., & Boero, P. (1994). Mathematical modelling of the elongation of a spring: Given a double length spring. In J. P. da Ponte, & J. F. Matos (Eds.), Proceedings of the eighteenth international conference for the psychology of mathematics education (PME XVIII) (vol II, pp. 384–391). Lisbon: Department of Education, University of Lisbon.