Geometry Sketchpad

If you love spirographs when you were a kid, you’ll love this program. “Geometry Sketchpad”: is a program that let’s kids understand mathematical relationships. The site has an evaluation copy that you can try. There seem to be quite a few online resources to learn hwo to use it. You get to pay for some of it, but “”: has lots of free information. Another good site is at “”: and “”: has a bunch of discussions.

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