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Valves and Pumps: A Demonstration
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This is a demonstration you can use to show learners how valves and pumps work in concert to move blood through the circulatory system.
Strong Shapes
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Is a square stronger than a triangle? Use tongue depressors to build simple shapes. Then apply a little weight to them and see what happens!
Spinning Tops
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Create your own spinning top, and explore color, shapes and spinning. This activity contains instructions for making your spinning top, and tips on how to design and decorate it.