We have been designing and making lifeboats. They had to be able to float, they had to be waterproof, at least hold 5 2 pence coins, it had to have a name, it had to be stable and have a sail.

We made them out of polystyrene, plastic cups, straws, tin foil, cocktail sticks, yogurt pots, pipe cleaners, felt, paper, tissue paper, lollipop sticks, balloons, and other materials. we were in groups of 2-4 and everyone worked well in their group.