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

In this quick activity, learners observe how the added sugar in a can of soda affects its density and thus, its ability to float in water.

As a group, learners investigate three packages which are all the same size and shape, but have different contents. One is filled with foam, one is filled with wood, and one is filled with metal.

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