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    TERC
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    Using recycled materials, learners will design a transportation vehicle to carry an egg in an egg toss (a rudimentary model of a shock absorbent transport vessel). Learners will consider how their...

    Ages 8 - adult
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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...

    Ages 11 - 18
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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...

    Ages 8 - 18
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    Howard Hughes Medical Institute
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    In this activity, learners explore how genetic switches function and the role of genetic switches in the process of evolution. To make these concepts less abstract and more understandable, learners...

    Ages 14 - adult
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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...

    Ages 11 - 18
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    TERC
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    In this activity, learners create models of erosion and floods and learn to recognize both in their environment. Using sand, wax paper, and water, learners observe the processes of erosion and...

    Ages 8 - 18
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    Astronomical Society of the Pacific
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    In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets. Learners will investigate the ingredients in comets and how...

    Ages 6 - adult
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    NASA
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    Use this model to demonstrate the goal of NASA's Kepler Mission: to find extrasolar planets through the transit method. The model uses legos to represent the planet system, a light to...

    Ages 11 - 18
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    Carleton College
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    This paper describes a working-model demonstration of Ernest Rutherford's 1911 experiment about the nature of atoms. In this demonstration, a model of an atom is constructed inside a sealed...

    Ages 11 - adult
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    American Society for Microbiology
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    Learners observe a model of a cell and its chromosomal DNA made from a plastic egg and dental floss. Use this model to illustrate how much DNA is held in one cell. For comparison, multiple eggs can...

    Ages 8 - 18

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