Artigue, M., Bottino, R., Cerulli, M., Mariotti, M. A., Morgan, C., Alexopolou, E., Cazes, C., et al. (2006). Developing a joint methodology for comparing the influence of different theoretical frameworks in technology enhanced learning in mathematics: the TELMA approach. In C. Hoyles, Lagrange, J. - B., Son, L. H., & Sinclair, N. (Eds.), Proceedings of the 17th Study Conference of the International Commission on Mathematical Instruction (ICMI): "Digital technologies and mathematics teaching and learning: Rethinking the terrain" (pp. 46-55). Hanoï University of Technology, Vietnam.