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

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Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

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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.

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?