This is a lab sheet for students to complete as they perform an experiment involving density and buoyancy. This experiment is perfect for small groups to complete together; however, it also contains an individual assignment that is differentiated. Students are given a small piece of heavy duty aluminum foil (4" by 6" or less). They work together to design a boat that will carry as many paper clips as possible. At the end of the lesson, the class will come together and discuss how the design of their boats influenced the number of paper clips the boat held. Materials needed include: containers with water, ruler, foil, paper clips, paper towels.