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    Bridge: Online Ocean Science Education Resource Center
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    In this environmental science and data analysis activity, learners work in groups to track a Dead Zone (decreased dissolved oxygen content of a body of water) using water quality data from the...

    free Ages 14 - 18 1 to 2 hours
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    Monterey Bay Aquarium
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    In this activity (see "At Home" section of webpage), learners play bingo to learn about the diversity of birds. This game includes a warm-up lesson and "Full Flight" version. In...

    free Ages 6 - 11 10 to 30 minutes
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    American Museum of Natural History
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    Learners work in teams to investigate how scientists use physical characteristics to classify living things. First, learners examine drawings of a variety of leaves from different species of oak...

    free Ages 8 - 18 45 to 60 minutes
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    American Association for the Advancement of Science
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    In this lesson that includes hands-on activities and demonstrations, learners discover that it is the tilt of the Earth's axis (not its proximity to the sun) that causes the seasons. Learners...

    free Ages 11 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners measure and calculate the amount of cubic feet various containers contain. Next, learners investigate cubic feet per second (cps), by carrying jugs in one second. This...

    free Ages 11 - 18 45 to 60 minutes
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    Science Museum of Minnesota
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    This is an online simulation of how sound changes due to environment. How does place--like a cave, a pier, or a forest--affect certain sounds? Move the sound pieces around and change the location...

    free Ages 4 - 8 5 to 10 minutes
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    Bridge: Online Ocean Science Education Resource Center
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    Water, whether fresh or salty, serves as one of the best electrical conductors on the planet. Does salt effect its conductivity? In this activity, learners will explore the effects of salts in the...

    free Ages 14 - 18 1 to 2 hours
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    National Park Service
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    In this online interactive, learners explore how archaeologists analyze artifacts to better understand how people lived long ago. Learners learn about the importance of asking good questions and...

    free Ages 6 - 14 5 to 10 minutes
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    Twin Cities Public Television
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    This activity (on page 3 of the PDF) is a full inquiry investigation into biodiversity. Groups of learners will go to the zoo to look at animal feet, making a list of ten different animals at the...

    free Ages 8 - 14 1 to 2 hours
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    National Museum of American History
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    In this activity, learners will use Google Sky to observe features of the night sky and share their observations. Learners partake in a "Telescope Treasure Hunt" as they look for...

    free Ages 4 - 11 10 to 30 minutes

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