Monday, 5 December 2011

Art Benjamin Does Mathemagic

This is an excellent video from the equally excellent TED site.



Art Benjamin squares some (very large) numbers in his head and explains how he breaks the problem down in his head.  The way he does it links to how (x+y)2 is multiplied out.  At a lower level you can show what he's doing using the grid method.

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Please do make any suggestions for improvement, variations that could be made, and let me know of any errors in the resources, or sections that students find confusing.