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        K-6

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        Part of Science Trek
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        The Heart | Science Trek

        Learn about the human heart and how big it is, how fast and often it beats, and what its job is with this video segment from IdahoPTV's Science Trek.  Get answers to some questions about the human heart's function, size, and speed and what happens to your heart when you get cardiovascular disease. 

        Visit the Science Trek companion web site to learn more about the Heart.

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