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Sketch a Skeleton

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In this activity (on pages 15-18 of PDF), learners make a life-size two-dimensional paper model of their own skeletons.
$1 - $5 per student Ages 4 - 11 45 to 60 minutes

Heavy Metal

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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.
$1 - $5 per student Ages 8 - 14 1 to 7 days

Bendy Bones

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In this activity (on pages 19-24 of PDF), learners soak chicken bones or eggshells in vinegar for several days.
1 cent - $1 per student Ages 8 - 14 1 to 4 weeks