You may also like

problem icon

Prompt Cards

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

problem icon

Consecutive Numbers

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

problem icon

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.

Prison Cells

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

Harriet sent in this solution. Well done!

She has explained her method in the middle of the grid.

Can you see how she did it?

Is this the only solution using her method?

Early in 2015 we had a solution from Ciaran and Alfie in year 5 at Petts Hill Primary In the U.K.

Thank you for this latest solution and the way it was illustrated.