You may also like

problem icon

Prompt Cards

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

problem icon

Round and Round the Circle

What happens if you join every second point on this circle? How about every third point? Try with different steps and see if you can predict what will happen.

problem icon

Tom's Number

Work out Tom's number from the answers he gives his friend. He will only answer 'yes' or 'no'.

Code Breaker

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

Make a list of all the prime numbers less than 10.
What are the different multiplication combinations you need to try?

Remember if the code was made by shifting the letters forward, to break the code you will need to shift the letters by the same number but backwards.