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

In this introductory activity, learners discover that sugar and food coloring dissolve in water but neither dissolves in oil.

In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult.

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.