I am not in an IGI, I am not a translator ,I am not a develloper, I am not a forum moderator , I am not an ambassador, I am surely an uncertified user but I'm a free and this last point is the best that can happen. Also, my goal is not to work for the reputation of any software as some do, but rather to get involved in facilitating learning in mathematics and sciences and to help all people to progress [url] http://dmentrard.free.fr/GEOGEBRA/index.htm[/url] [url] http://dmentrard.blogspot.com/[/url] [url]http://www.youtube.com/user/DMENT37/videos[/url] [url]https://twitter.com/dment37?lang=fr[/url]