Sound & Resonance

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  1. Set of 8 Boomwhackers Item # P7-7400
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    Demonstrate open- and closed-piped resonance with these colorful tubes. When whacked against the floor or your knee, each tube produces a clear tone. Students can even play songs!

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  2. Singing Rods (Set of 2) Item # P7-7250
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    A must for explorations of sound and waves, these rods are an easy way to demonstrate longitudinal waves as opposed to transverse waves. They're ideal for teaching about nodes and anti-nodes in standing waves.

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  3. Sound Wave Interference Kit Item # P7-7600
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    Now you can get a complete economical solution for demonstrating wave interefernce on a classroom size scale. Kit includes signal generator and powered speakers, everything you need for this great demonstration.

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  4. Doppler Ball Item # P7-7120
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    This foam ball has a battery-powered buzzer inside. Start the buzzer and play catch. Throw it fast enough, and students can hear the frequency shift!

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  5. Sound Pipe Item # P7-7200
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    Twirling the pipe at different speeds produces up to five different resonant tones. It's a great addition to your resonance demonstration collection.

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  6. Sympathetic Tuning Fork Set Item # P7-6000
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    Set includes two C Note 256 Hz tuning forks, one fixed and one adjustable, each mounted on a wooden resonance box and a mallet.

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  7. Sound and Wave Discovery Pack Item # P7-2030
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    Hands-on discovery brings lessons on Sound & Waves to life, with this complete sound and wave explorations kit!

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  8. Music Box Mechanism Item # P7-7330
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    Turn your whole chalkboard into a speaker! This music box mechanism is quiet on its own, but just hold it against a large object and hear a dramatic increase in volume!

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  9. Talkie Tapes class set of 30 tapes Item # P7-7320
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    Attach this simple plastic strip to any object, like a cup or a balloon, rub it with your thumbnail and hear it talk! Tiny bumps on the tape cause vibrations that mimic a human voice saying, "Science is Fun!" Pack of 30.

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  10. Bell Jar and Ringer Item # P7-6500
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    The bell jar (named for its shape) and vacuum plate are supplied with a battery-operated electric bell. The bell is mounted on springs to dampen the vibrations, so students can clearly hear the drastic reduction in sound when the air is removed.

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