Proceedings of the IADIS International Conference on Cognition and Exploratory Learning in the Digital Age (CELDA 2008) : Freiburg, Germany, October 13-15, 2008
Publisher:
Kinshuk
;
Sampson, Demetrios G.
;
Spector, J. Michael
;
Isaias, Pedro
;
Ifenthaler, Dirk