As second graders prepare to create and test their own submersibles to gather data from the ocean floor, it is important that they begin to see the relationships that exist between mass, volume, and density. Second graders first focused on determining the mass of each instrument that can be included in their designs. Each instrument was represented using a transparent vial filled with a different amounts of pony beads, marbles, or sand. Using two-pan balances, students learned that some instruments have more mass than others. Will this affect their submersible designs' ability to sink or float? We will just have to wait and see!
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