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    In this three-part activity, learners explore how waves are formed and why some waves are bigger than others. First, learners observe waves of water in a pan generated by an electric fan. Learners...

    $10 - $20 per group Ages 8 - 11 45 to 60 minutes
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    In this ecology activity, learners make a model water-based ecosystem called a terraqua column. The column (in a large soda bottle) includes pond water, duckweed, sand or gravel, and small snails....

    Over $20 per group Ages 11 - 14 1 to 2 hours
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    In this outdoor activity, learners work in pairs using their senses—especially touch—to learn more about individual trees. After reading and discussing Shel Silverstein's storybook "The...

    $5 - $10 per group Ages 8 - 18 1 to 2 hours
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    In this activity, learners take an indoor nature walk and discover various objects that have been brought in from the outdoor environment. In preparation for the activity, an educator places...

    $10 - $20 per group Ages 11 - 14 30 to 45 minutes
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    In this activity, learners consider how oil spills behave in the ocean and what impact they have on marine wildlife. Learners build and observe a model of an oil spill using simple materials, then...

    $10 - $20 per group Ages 11 - 14
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    In this experiment, learners use a blow dryer and water bottle to observe and record changes in air pressure caused by changes in temperature. Educators can use this activity to explain how changes...

    $5 - $10 per group Ages 8 - 14 5 to 10 minutes
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    In this environmental science activity, learners research what is essential for plant life and the necessary components of soil to support plants. Then, learners plan, design and build compost bins...

    Over $20 per group Ages 11 - 14 1 to 4 weeks
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    In this engineering/design activity, learners make a kite, fly it, and then work to improve the design. Learners explore how their kite design variations affect flight. Learners can test their kite...

    $1 - $5 per student Ages 8 - 14 10 to 30 minutes
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    In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction. The activity can be done outdoors on a windy day or...

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes
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    In this multi-part activity learners examine non-point water pollution. Learners discover ways they may be contributing to this type of pollution and brainstorm ways to change their behavior to be...

    free Ages 6 - adult

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