Float the Boat

basins of water
tinfoil
pennies
1) Fashion a boat from a piece of tinfoil.
2) Float it in the basin.
3) How many pennies will your boat hold before it sinks? Explanation: Different shapes and sizes of boats will be able to hold more pennies. What shapes of boat work best? To make this exercise more challenging, limit the amount of tinfoil each person is allowed to use to make their boat.