A directory of useful objects found on the web for teaching Maths.
http://skunkbear.tumblr.com/post/127032603319/big-math-news-its-been-thirty-years-since
Animated GIF, Image
Animated examples of regular polygons tesselating. An example of how a regular pentagon cannot and a visualisation of the irregular pentagons that can.
22 August 2015 Edit: 22 August 2015
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