For this science project, we had to make a boat and race it across a tube of water. We made a boat with styrofoam and then but tinfoil around it to make it waterproof. Then we also but to doll rods and put index cards on those doll rods to make them sails. And our time that we got was 9.37 the first time and the second time we raced we got 9.73. In the end, we got to learn how to make the best and most efficient boat.