Activity
Properties Testing
Give groups a tray with different materials on it (e.g., a rubber band, a lolly stick, a stone, a piece of foil, a sponge, a plastic toy). Ask them to test each one: Is it bendy or stiff? Is it rough or smooth? Is it waterproof? A simple test for 'waterproof' is to put a drop of water on it and see if it soaks in.