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

Consecutive Numbers

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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.

Adding Plus

Age 7 to 11
Challenge Level

How about trying to make $90$ using the digits $1-8$ and leaving the $9$ for adding on at the end?
A good place to start may be to push the $1$ and $2$ together to make $12$. What will you still need to add onto $12$ to make $90$?
Can you make $90$ simply by adding the remaining digits together? What could you do?
Perhaps you could try pushing the $2$ and $3$ together to make $23$? What do you need this time to make $90$?