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    Bridge: Online Ocean Science Education Resource Center
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    In this activity, learners will explore trends in Canada goose populations using real data from the National Audubon Society's Christmas Bird Count. Objectives include learning the differences...

    free Ages 14 - 18 1 to 2 hours
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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into bird behaviors. Groups of learners will brainstorm a list of possible behaviors to start, then separate into teams...

    free Ages 8 - 14 2 to 4 hours
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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF under GPS: Cave Swallows Activity) is a full inquiry investigation into bird behaviors. Groups of learners will brainstorm a list of possible behaviors...

    free Ages 8 - 14 2 to 4 hours
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    Lawrence Hall of Science
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    How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake? In this outdoor activity, learners will make their own Secchi disk...

    $10 - $20 per group Ages 8 - adult 10 to 30 minutes