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    Lunar and Planetary Institute
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    In this activity, learners discuss how life is defined and conduct a simple experiment, looking for signs of life in three different “soil” samples. The experiment introduces learners to the...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    Berkeley Natural History Museums
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    In this simulation, learners model two elephant seal populations and how they change over time. Learners start with cards representing a variety of seals. Each generation, some seals survive to...

    free Ages 11 - 18 45 to 60 minutes
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    Lunar and Planetary Institute
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    In this activity, learners create volcanoes like those they have examined on Earth and Mars through images taken by spacecraft. Using baking soda and vinegar, learners model volcanic eruptions and...

    $10 - $20 per group Ages 8 - 14 10 to 30 minutes
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    Twin Cities Public Television
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    In this activity (on page 2 of the PDF), learners will pair up and take a notebook outdoors to a selected location to observe and record a list of living things that they see, writing descriptions...

    free Ages 8 - 14 1 to 2 hours
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    Lunar and Planetary Institute
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    In this activity, learners create channel features with flowing water, comparing their observations to real images of Mars and Earth taken by satellites/orbiters. Learners' observations of the...

    Over $20 per group Ages 8 - 14 10 to 30 minutes
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    Community Science Workshop Network
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    In this biology/ecology activity, learners construct a terrarium out of a tennis ball container. This terrarium is unique because it never has to be watered. Learners will enjoy watching their...

    $1 - $5 per student Ages 6 - 11 1 to 4 weeks