Sink or Float

By the end of this unit, students will be able to:

1. explain what it means for an object to float or sink;
2. recognize common objects that float and sink;
3. predict whether different objects will float or sink before testing them;
4. explain their predictions based on their understanding of the properties of the objects (e.g., light vs. heavy, filled with air vs. solid);
5. and sort objects into groups of those that float and those that sink after testing.