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    Oregon Museum of Science and Industry
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    In this activity (on pages 11-14 of PDF), learners cut out pictures from magazines of foods that help make bones strong and glue the pictures to a paper bone. The lesson plan includes information...

    1 cent - $1 per student Ages 4 - 11 30 to 45 minutes
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    Oregon Museum of Science and Industry
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    In this activity (on pages 19-24 of PDF), learners soak chicken bones or eggshells in vinegar for several days. Learners observe what happens to the material as the acid dissolves the calcium that...

    1 cent - $1 per student Ages 8 - 14 1 to 4 weeks

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