V. Lonati, M. Monga, A. Morpurgo, and M. Torelli. Informatics in Schools: Contributing to 21st Century
Education. Proceedings of the International
Conference on Informatics in Schools: Situation,
Evolution and Perspectives (ISSEP2011), volume 7013 of Lecture Notes in Computer Science, page 213--224. Springer-Verlag, (October 2011)