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The faster you spin it the higher the sound! Science and sound has never been more hands-on than now with the fun 5 tone Sound Tube! Manipulate the sound waves and frequencies as you start swinging the sound tube. The faster you spin it, the higher the sound. Get your arm swingin' and change the speed to hear up to 5 various tones. You can also blow into it to hear the tones.
What you'll get:
Incredible Science Fun Learning Ideas: