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    University of Kansas
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    Using indirect observational methods, learners distinguish between charged and uncharged objects. This lesson uses magnetic marbles to represent charged particles and iron filings to represent a...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners discover the primary physical properties used to separate pure substances from mixtures. Learners use test tubes, beakers, magnets, and other tools to separate a mixture...

    $1 - $5 per group Ages 8 - 18 1 to 7 days
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    Oregon Museum of Science and Industry
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    This is a series of demonstrations about different electrical and magnetic phenomena. Some require highly specialized equipment like a Wimshurst machine, while others involve very simple equipment...

    Over $20 per group Ages 11 - 18 45 to 60 minutes
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    COSI
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    In this activity about magnetism (page seven of the pdf), learners experiment with magnets to better understand how magnetic fields work. More importantly, they learn that Earth is surrounded by...

    $1 - $5 per group Ages 6 - 8 10 to 30 minutes
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    NISE Network
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    In this activity, learners discover that a material can act differently when it's nanometer-sized. Learners investigate the properties of ferrofluid and magnetic black sand and learn that the...

    Over $20 per group Ages 4 - adult 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    In this chemistry activity (on page 2 of the PDF), learners corrode a penny in a cup with vinegar, salt water, and a source of iron (nails, paper clips, or twist ties). The combination of salt and...

    1 cent - $1 per student Ages 6 - 14 1 to 7 days
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    The Exploratorium
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    With a magnet, iron fillings, and a bottle, you can create a cool demonstration about magnetic lines of force: the fillings will arrange themselves within the magnet's magnetic field.

    $1 - $5 per student Ages 6 - 18 Under 5 minutes
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    NISE Network
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    "Exploring the Solar System: Craters" is an active, hands-on activity that demonstrates how craters form, and what they can teach us about the history and composition of planets and moons...

    1 cent - $1 per student Ages 4 - 14 5 to 10 minutes
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    University of Illinois Urbana-Champaign
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    In this activity, learners identify different classes of matter based on physical properties. This lab activity introduces the key ingredients of concrete and provides a deeper understanding of the...

    $5 - $10 per group Ages 14 - adult 45 to 60 minutes
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    University of California Museum of Paleontology
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    In this multi-station lab, learners conduct a series of experiments to explore the processes and effects of weathering and erosion. Using the results from these explorations, learners design and...

    $5 - $10 per group Ages 8 - 14 1 to 7 days

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