GeoGebra - 2 views
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Sue Runyon on 11 Feb 11Great free geometry software that is similar to Geometer's sketchpad
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Melinda Connon on 22 Jun 11I have been using this tool to develop/convert investigative activities for Geometry through Calculus. The files files can be exported to HTML in a nicer format that Geometer's Sketchpad 4.0. I haven't tried GSP 5.0.