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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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Worms

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?

Napier's Bones

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

The Scot, John Napier, invented these strips (originally made from bone) about 400 years ago to help calculate multiplication and division.

This is what they looked like:

Diagram of Napier's bones.

Can you work out how to use Napier's bones to find the answer to 24 x 6?
How about 461 x 4?
Now try 8931 x 6.

Can you work out how you would use them to calculate the product of 3541 and 768?