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    In this activity about bones (page 12 of PDF), learners investigate and compare the weight-bearing capacity of solid and hollow cylinders. Learners then make inferences about bone structure and...

    $1 - $5 per group Ages 6 - 11 1 to 2 hours
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    In this activity about center of gravity (page 23 of PDF), learners investigate how the body adjusts to the force of gravity to remain balanced. In part 1, learners use different amounts of weight...

    $1 - $5 per group Ages 6 - 11 1 to 2 hours