This product is a great way to introduce or reinforce density, and also a great way to introduce or reinforce scientific method.
This includes directions for both a teacher demonstration or student centered demonstration of the principle. In this case, it is a great demonstration/discrepant event to engage students at the start of a unit.
Also included is directions to make this a scientific inquiry, or true experiment, and to work students through the process of designing an experiment.
This project fits will during a unit on either density, applications of density, early in the year for experimental design, or to wrap up the year and reinforce experimental design with a fun project.
See an example HERE
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