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Secrets of Mental Math: Arthur Benjamin
The closing keynote for Monday night, usually something fun and light, did not disappoint. The speaker was Arthur Benjamin, author of the book Secrets of Mental Math. He’s a “mathemagician” doing mental math at lightening speed. He did magic squares, 4 digit number multiplication, day of the week calculations, and other things. It was very fun and entertaining.
Posted by windley on March 26, 2007 10:17 PM
Comment from Name at April 1, 2007 8:34 AM
This book uses the "Trachtenberg Speed System", which has free info available on the web.
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