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    National Wildlife Federation
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    In this activity, learners explore the web of connections among living and non-living things. During this activity, learners have an opportunity to think about many different interactions within an...

    1 cent - $1 per group Ages 4 - 14 30 to 45 minutes
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    University of Nebraska State Museum
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    In this activity (on pages 22-33), learners do the kind of work genetic scientists do, sorting and comparing (images of) genetic material strands called chromosomes. First, learners use two meters...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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    University of Nebraska State Museum
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    This activity (on pages 19-24) introduces learners to the rain forest's layers—emergent, canopy, understory, and forest floor—and has learners make paper lianas (vines that live attached to...

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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    WGBH
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    In this dynamic activity, learners build a catapult that launches projectiles, such as marshmallows. Participants then design and build their own models using the steps of the design process to...

    1 cent - $1 per group Ages 6 - 11 30 to 45 minutes
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    WGBH
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    Learn how to make and fly a paper helicopter! This simple activity includes a template (for the copter "blades") and instructions for folding, flying, and testing designs. Students will...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    WGBH
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    In this simple activity, learners discover how a mere piece of paper can be used to hold up the weight of a heavy book. Learners are encouraged to modify their materials, using the steps of the...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    WGBH
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    In this activity, learners construct a playable kazoo from inexpensive materials. They will experience how vibration creates sound waves and music. Changing the materials their kazoo is made of,...

    1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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    WGBH
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    This simple construction activity teaches the importance of architectural structure. Learners build and test designs for a paper "doghouse" strong enough to hold the weight of a jumbo dog...

    1 cent - $1 per student Ages 6 - 11 45 to 60 minutes
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    American Chemical Society
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    In this activity, learners make film canister rocket ships. A fin pattern is glued onto the outside of the canister, and fuel (water and half an antacid tablet) is mixed inside the canister. When...

    1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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    American Chemical Society
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    In this activity, learners write invisible messages on goldenrod paper, and make the message appear and disappear using acids and bases. Goldenrod paper is paper that has been dyed with natural...

    1 cent - $1 per student Ages 6 - 14 30 to 45 minutes

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