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    New Jersey Department of Education
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    In the wild, small crustaceans known as brine shrimp live in marine habitats such as saltwater lakes. In this activity, learners create a saltwater or marine ecosystem that becomes an experimental...

    $10 - $20 per group Ages 11 - 18 1 to 7 days
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    American Chemical Society
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    In this activity, learners apply a dissolving test to known crystals to identify the unknown. Since the unknown is chemically the same as one of the known crystals, it should dissolve similarly. By...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    New Jersey Department of Education
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    An estuary is a body of water that is created when freshwater from rivers and streams flows into the saltwater of an ocean. To understand this mixing of fresh and salt water, learners go through...

    $10 - $20 per group Ages 8 - 18 1 to 4 weeks
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    University of California Museum of Paleontology
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    Learners conduct an experiment to determine the rate at which two materials, sand and water, heat up and cool down. Then, based on their observations, they make hypotheses about why materials heat...

    $5 - $10 per group Ages 11 - 14 45 to 60 minutes
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    American Chemical Society
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    In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult. Although the crushing test will not give conclusive results, it is a...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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    COSI
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    In this activity about magnetism (page 13 of the pdf), learners will experiment with magnets to explore how water and other liquids affect the strength of magnetic fields.

    $1 - $5 per group Ages 6 - 11 10 to 30 minutes
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    American Chemical Society
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    Learners identify an unknown liquid by comparing its behavior to known liquids. Learners drop liquids onto different surfaces and see how the liquids behave. Learners realize that using a...

    1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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    American Chemical Society
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    What causes frost to form on the outside of a cold container? In this activity, learners discover that liquid water can change states and freeze to become ice. This can be used as a follow-up...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    American Chemical Society
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    Learners see that a carrot slice sinks in fresh water and floats in saltwater. Considering the placement of the carrot slice in water and saltwater, learners infer that the density of salt water...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes

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