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    The Exploratorium
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    Make your own speaker with a magnet, wire, and paper cup! If you have a radio with a headphone plug and an old pair of headphones, this is a great tinkering activity.

    $1 - $5 per student Ages 8 - adult 10 to 30 minutes
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    American Physical Society
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    Learners use compasses to detect the magnetic field created by current moving through a wire. This is one of four activities learners can complete related to PhysicsQuest 2008. Each activity gives...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    NASA
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    In this activity, learners explore the magnetic field of a bar magnet as an introduction to understanding Earth's magnetic field. First, learners explore and play with magnets and compasses....

    $10 - $20 per group Ages 8 - 18 10 to 30 minutes
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    PBS
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    In this activity, learners use a compass, powerful magnet, and copper magnet wire to build a special generator known as a dynamo. Learners observe what happens to the compass needle when the magnet...

    $5 - $10 per group Ages 11 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners create a tiny electric, motorized dancer. Learners use the interactions of magnetism and electric current to make a wire spin, while displaying the Lorentz Force in...

    $1 - $5 per student Ages 8 - 18 30 to 45 minutes
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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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    Science Friday
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    In this activity, learners explore how an electromagnet works by making a simple one. Using this knowledge, learners design a diagram to make a working speaker using household materials. Then...

    $10 - $20 per group Ages 11 - 14 45 to 60 minutes
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    COSI
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    In this activity about magnetism (page 13 of the pdf), learners will experiment with magnets to explore how water and other liquids affect the strength of magnetic fields.

    $1 - $5 per group Ages 6 - 11 10 to 30 minutes
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    American Physical Society
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    Learners use the current flowing in a wire to create a magnetic field that turns a magnet. Learners can use this property of electromagnetism to build a magnet-powered pinwheel. This is one of four...

    $1 - $5 per student Ages 11 - 18 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners use a pencil, magnets, and mat board to illustrate Newton's Second Law. Learners will observe as gravitational and magnetic forces act on two falling objects to...

    1 cent - $1 per student Ages 11 - 18 30 to 45 minutes

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