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Science

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  • The front cover of the Why Can a Cow Eat Grass DVD.

    Why Can a Cow Eat Grass?

    Grades 3-8 (DVD 29 minutes) While Supplies Last! This video provides an in-depth look at the digestive tract of cattle, focusing on differences between cattle and human digestive systems. Take a journey into a cow's stomach and microscopically view the...

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  • The front cover of the Wool Ewe Keep Me Warm DVD.

    Wool Ewe Keep Me Warm?

    Grades 3-8 (DVD 27 minutes) While Supplies Last! What is wool and where does it come from? How does it get from the sheep to the sweater? Why do shepherds use dogs to herd sheep? Why have sheep been important to humans since prehistoric times? These...

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