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    The Exploratorium
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    Make your own simple speaker so you can listen to your favorite radio station. Just wind a coil, attach it to a piece of cardboard or Styrofoam, hold a magnet nearby, and listen. This activity...

    $1 - $5 per student Ages 8 - 18 30 to 45 minutes
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    NISE Network
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    In this activity/demo about piezoelectricity, learners discover how some crystals produce electricity when squeezed. Learners investigate the history of piezoelectricity, how it's used, and...

    Over $20 per group Ages 4 - adult 10 to 30 minutes
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    The Exploratorium
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    With a bit of PVC, a laser, a can/cup, and a small mirror, you can make a device that visualizes you voice or any sound transmitted into the cup/can. Make beautiful patterns on a white wall as you...

    free Ages 8 - adult 10 to 30 minutes
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    Community Science Workshop Network
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    In this activity, learners explore sound by constructing their very own banjo out of a coffee can. Learners experiment with the canjo to change the instrument's pitch and timbre.

    $1 - $5 per student Ages 6 - 18 45 to 60 minutes
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    Community Science Workshop Network
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    In this activity, learners explore sound by constructing tube zithers, stringed instruments from Southeast Asia and the South Pacific. Use this activity to demonstrate principles of sound including...

    $5 - $10 per student Ages 6 - 18 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners use a compact disc to make a spectrometer, an instrument used to measure properties of light. Learners use their spectrometer to view a continuous spectrum produced by...

    $1 - $5 per student Ages 11 - 18 30 to 45 minutes
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    NOAA
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    In this activity, learners will listen to as many radio stations as possible to discover that AM radio signals can travel many hundreds of miles at night. Learners log the call signs, locations,...

    free Ages 8 - 18 1 to 2 hours
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    Science Museum of Minnesota
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    In this activity, learners explore electricity and conductivity to find that many things conduct electricity including copper, pencil lead, fruit, play-doh, and even people! Learners set up a...

    $1 - $5 per student Ages 8 - 18 30 to 45 minutes
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    Science Museum of Minnesota
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    Break open that used musical toy and squish some Play-Doh over the circuit boards, and you will hear some weird and distorted sounds the manufacturer never intended! In this activity learners...

    $1 - $5 per student Ages 4 - adult 45 to 60 minutes
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    Science Museum of Minnesota
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    In this activity, learners construct wands that play different notes depending on information from light sensors programmed via a PICO Cricket. As learners move the wands around, they expose the...

    $5 - $10 per student Ages 11 - 18 30 to 45 minutes

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