Time: at least 10 minutes
Equipment: straws, alfoil; a ‘body of water’; coins
Purpose/Topic: To explore floatation
AoPG: Intellectual, Physical

Give each Joey Scout (or pair of Joey Scouts) a couple of straws and a piece of alfoil.
Give the Joey Scouts 10 minutes to construct a boat, aiming to support as many coins as possible.
Test each boat, to see how many coins it can hold.