GeoGebra Dynamic Mathematics for Schools Free, open-source dynamic mathematics software joining geometry, algebra, and calculus www.geogebra.org
GeoGebra – www.geogebra.org - Geometry, algebra and calculus package - Runs on every computer and is available in 39 languages GeoGebraWiki - www.geogebra.org/wiki - Free pool of dynamic worksheets developed by teachers GeoGebraForum - www.geogebra.org/forum - Supportive and enthusiastic user community International GeoGebra Institute - www.geogebra.org/IGI - Offers free training for teachers - Issues GeoGebra certification - Conducts research Contact - Markus Hohenwarter, USA: markus@geogebra.org - Yves Kreis, Luxembourg: yves@geogebra.org - Zsolt Lavicza, UK: zsolt@geogebra.org