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Prompt Cards

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

Consecutive Numbers

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

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.

Book Codes

Age 7 to 11 Challenge Level:

Why do this problem?

This problem could intrigue some children. It gives plenty of practice in multiplication and addition.

Key questions

When was the book published?
Do the numbers have any factors in common?
Do you know how to check that a number is divisible by 2, 3, 4, 5 ...?


Possible extension

Some children could research the properties of more recent ISBNs.

Possible support

Using a calculator will free up some children for thinking!