The opening video played at the inaugural Flat Classroom Conference hosted at Qatar Academy, Doha Qatar in January 2009. It is a review of the beginning and development of flat classroom projects from 2006-2009.
GeoGebra is a free and multi-platform dynamic mathematics software for schools that joins geometry, algebra and calculus. It received several international awards including the European and German educational software awards. Found this one thanks to http://twitter.com/tjmeister tweet!