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    The Exploratorium
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    In this geology activity, learners create a model using a mixture of salt and sand inside a CD case. When the case is tilted or inverted, the mixture dramatically sorts into a layered pattern. With...

    $5 - $10 per group Ages 11 - 18 1 to 2 hours
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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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    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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    The Exploratorium
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    The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead. Natron is made up primarily of sodium carbonate (a very efficient, but...

    $5 - $10 per group Ages 8 - 18 1 to 4 weeks
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    Oregon Museum of Science and Industry
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    In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the...

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes
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    New England Aquarium
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    In this activity, learners explore how salt water freezes in comparison to fresh water. Use this experiment to consider how pond animals survive cold winters in comparison to animals that live in...

    1 cent - $1 per group Ages 6 - 14 1 to 2 hours
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    Centers for Ocean Sciences Education Excellence
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    In this activity, learners are introduced to robotic submarines called gliders. Learners make “gliders” from plastic syringes and compare these to Cartesian bottles and plastic bubbles. Learners...

    $10 - $20 per group Ages 11 - 18 45 to 60 minutes
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    Mount Holyoke College
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    In this activity, learners build models of atoms and molecules, then consider their role in different phases of matter, density, and mixtures and solutions. The atomic models are made first from...

    $1 - $5 per student Ages 8 - 14 30 to 45 minutes
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    New Jersey Department of Education
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    In this activity, learners discuss the different salinities of oceans, rivers and estuaries. Learners then use experimentation to determine which sample is the best model of each type of natural...

    $5 - $10 per group Ages 8 - adult 1 to 7 days
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    The Exploratorium
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    In this geology activity learners build a "squeeze box," which allows them to compress layers of sediment. This is a great way to investigate folding and faulting in the Earth. The...

    $10 - $20 per group Ages 8 - 18 5 to 10 minutes

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