Age 5 to 14 Challenge Level:
You can see some videos of children working on this task in our Early Years Children's Thinking section.
We thought you might also like to see these sketches, drawn by a member of the NRICH team as he was working on a new interactivity for this task:
What might he be thinking?
If you would like to get in touch with us about how you approached this task, please email email@example.com.