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Changing the Density of a Liquid: Heating and Cooling
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Learners investigate how the temperature of water affects its density.
Changing the Density of an Object: Adding Material
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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.
Bag of Bones
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In this activity, learners will use cereal to conduct an experiment and investigate how decreased bone density is related to increased risk of bone fracture.
Sky Floater Challenge
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In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.