Age 5 to 11
Why do this problem?
This activity challenges the most able pupils in their spatial awareness abilities. It also enables them to have something before them to explore and compare.
As this is intended for the most able I would suggest printing out the activity and discussing together first of all.
You could get started by asking the group to give you instructions to make the second or third model. Then let them produce their creations.
Tell me about your shapes.
So what have you found when comparing them?
What can you now explore about these?
Pose the question about balance, asking "Does it matter if the model is stable?".
You could encourage children to explore models containing an archway/bridge.