A directory of useful objects found on the web for teaching Maths.
http://www.numberphile.com/videos/root2.html (Alternate link)
Publisher, James Grime, Numberphile, Video, YouTube
The square root of two is a fascinating number with a long and sordid history. It also forms the basis of most office paper, such as A4, A3, etc.
28 November 2013 Edit: 13 February 2022
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