Boat Making In Science, this afternoon Grasshoppers have been making the boats that they have designed. They chose the materials they wanted to use for the hull and to make the mast and sail. The children had a range of different materials to choose from: plastic, metal, cork, cardboard, sponge, fabric, felt, foam, wood and paper. Once made, they tested them to see if they floated, sank or tipped over. They evaluated their boats and thought about what they might change next time and if they could improve their design.