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Metallophone
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In this activity, learners explore sound by constructing an instrument using some metal pipes, rubber bands, and a baseboard.

Recycle Your Own Paper!
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In this activity (page 2 of PDF under GPS: Garbology Activity), learners will prepare sheets of homemade recycled paper from several different source pulps.

Shadow Puppets
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In this activity, learners explore color, light and shadow by creating their own puppets to hold in front of a light source.

Polarized Light Mosaic
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In this activity, learners use transparent tape and polarizing material to create and project beautifully colored patterns reminiscent of abstract or geometric stained glass windows--no glass required
Leaves: Extracting Pigments
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In this fun, hands-on autumn activity, learners experiment to discover whether the colored substances in leaves can be separated from the leaves.

Homework, Hogwarts Style
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In this activity on page 8 of the PDF (Behind the Scenes with Chemistry), learners make three of Harry Potter's essential school supplies: quills, ink, and color-changing paper.

Good Vibrations
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In this activity, learners experiment with their voices and noisemakers to understand the connections between vibrations and the sounds created by those vibrations.

Busted by Biology
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In this two-part activity, learners will extract their own DNA from their cheek cells and learn how DNA is analyzed and used to solve crimes.