  Technologies in mathematical education has been a theme present at CERME from
the first edition. The available technologies have evolved a lot during these
years. At CERME 5 conference, the conclusions of the technology Working Group
(Kynigos et al. 2007), as well as Artigue's and Ruthven's interventions
(Artigue 2007, Ruthven 2007), signal perspective evolutions towards more
comprehensive studies, in several respects. Drawing on these previous works,
CERME 6 WG7 intended to go further in the directions they have indicated.
