Thursday, December 13, 2007

[TIPS] ted video for the math teachers

http://www.ted.com/talks/view/id/199

 

Show this one to your favorite math teachers. Mathemagician Arthur Benjamin dazzles the audience with some cool math tricks. At the end he thinks out loud to reveal some of his “magic.”

 

The number he squares in his head at the end is 57,683 squared. Amazing!

 

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