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Murderous Maths proudly presents:

The Predictor Cards!

The Trick:

1/ Ask a friend to think of a secret number between 1-16. Then...
2/ Lie the four special cards out. 3/ Ask your friend to make sure the secret number is the right way up on each card. Here you'll see the two cards marked with a red dot have been rotated.
4/ Stack the cards up on top of each other... 5/ ... it doesn't matter what order the odd-shaped cards are piled in so long as you don't rotate them.
6/ Finally the square card goes on top. 7/ Turn the whole pile of cards over, and your friend's secret number will appear in the hole!

Make your own set of cards!

It only takes a minute to cut out your own set of cards. You're welcome to print out this WORD .doc: PREDICTOR CARDS SHEET.

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The PREDICTOR CARDS and the word .doc are Copyright © Kjartan Poskitt 2009.

For all enquiries please contact "Murderous Maths", c/o Scholastic Books, Euston House, 24 Eversholt Street, London NW1 1DB, England.

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