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Prompt Cards

These two group activities use mathematical reasoning - one is numerical, one geometric.

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Exploring Wild & Wonderful Number Patterns

EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.

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Place this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?

Reverse Trick

Stage: 2 Challenge Level: Challenge Level:1

Tell your friends that you have a strange calculator that turns numbers backwards. Secretly enter 9+ then enter 12 and show a friend. Press = and up comes 21.

Try another one: Secretly enter 36+ then enter 15 and show a friend. Press = and up comes 51.

What secret number do you have to enter to make this large number turn around: 141 414?