This activity was so fun for my students! Students a given a set amount of supplies. Using the given supplies they have to create a boat that will float and hold "cargo". I used unit cubes and the "cargo". If was so fun seeing the different designs they came up with!
One of my students informed me that I shouldnt have given them sponges because they soak up water and then dont float. I just shrugged my shoulders and told them to use whatever supplies they wanted. (The one with the most sponges used won!)