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    Oregon Museum of Science and Industry
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    Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline. They make a model of a riverbank and then simulate the...

    1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    Learners explore how recyclers take advantage of the different properties of materials, such as magnetism and density, to separate them from a mixture. They use a magnet and floatation to separate...

    1 cent - $1 per group Ages 4 - 14 Under 5 minutes
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    Oregon Museum of Science and Industry
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    In this activity (on page 2 of the PDF), learners explore surface tension by adding pennies to cups which are "full" of plain water or soapy water. The surface tension of the plain water...

    1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    Learners add acid rain (nitric acid) to two cups that represent lakes. One cup contains limestone gravel and the other contains granite gravel. Learners also add an indicator to each solution that...

    1 cent - $1 per group Ages 14 - adult 5 to 10 minutes