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Learners see that a carrot slice sinks in fresh water and floats in saltwater.

In this activity, learners experiment with their voices and noisemakers to understand the connections between vibrations and the sounds created by those vibrations.

In this activity about water solubility and density, learners use critical thinking skills to determine why water can dissolve some things and not others.

Learners investigate how the temperature of water affects its density.

Learners see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float.