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    COSI
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    In this activity (page 6 of the PDF), learners will observe both a chemical and a physical change. By experimenting with plaster of paris, students will differentiate between these types of changes...

    Ages 8 - 18
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    Cornell Center for Materials Research
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    In this activity, learners explore how composites work by creating and testing their own composite for an imaginary company. This activity shows learners that composites are simply materials that...

    Ages 11 - 18
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    COSI
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    In this chemistry activity, learners witness an exothermic reaction, while making their very own, completely usable sidewalk chalk. This is also an excellent activity for exploring color mixing. In...

    Ages 8 - 14
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    Oregon Museum of Science and Industry
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    In this activity (on pages 25-31 of PDF), learners soak sponges with different amounts of plaster of paris to simulate different levels of calcification in bone formation. After being allowed to...

    Ages 8 - 14
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    Oregon Museum of Science and Industry
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    In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay. Use this activity to introduce learners to how scientists and...

    Ages 6 - 14
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    Oregon Museum of Science and Industry
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    In this experiment, learners will conduct chemical and physical tests to identify mystery substances. This experiment is very flexible, allowing educators to determine the number of unknowns to...

    Ages 8 - 14