In response to my previous post regarding Igeom, the interactive Geometry applet, John Cazakoff of Shaunavon High School directed me to mathopenref.com, a site which hosts a number of online interactive applets covering many common geometry concepts. The site is an excellent supplement to the regular math classroom. Its strength lies in its activities for plane geometry, but it does have some resources for cartesion/coordinate geometry and solid/3D geometry as well.
Each of the applets at mathopenref.com tackles a specific concept and is accompanied by an explanation of the concept illustrated. In this way, it differs from Igeom, which is more of an open-ended erector set that allows teachers and/or students to create their own interactive systems.
Thanks, John, for bringing this resource to my attention.
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