Sound Hose Whirly Tube

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=CuGnsW0ysrA

Order now at http://www.stevespanglerscience.com/p... Twirl this 30-inch plastic hose over your head at different speeds and make at least five different tones, depending on how fast you can twirl! This is a fun science activity that's also guaranteed to get your arm in shape!

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