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        4-8

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        Part of DragonflyTV
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        Mountain Boarding: Wicked Wheels

        A mountain board is a kind of skateboard on steroids. The decks are big, the wheels are rubber, and your feet fit into bindings. When Sean, Ben and Neil mountain board in Southern California, they notice that the boards ride differently when the tire pressure is higher or lower. Sometimes the wrong pressure makes them feel out of control. Their question: Which tire pressure will let us maintain speed and control through turns?

        http://pbskids.org/dragonflytv/

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