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Secret Bells

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Sound can travel through a variety of media.
1 cent - $1 per student Ages 6 - 14 Under 5 minutes

Stick to It: Adhesion II

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Water sticks to all kinds of things in nature — flowers, leaves, spider webs - and doesn't stick to others, such as a duck's back.
$5 - $10 per group Ages 8 - 18 30 to 45 minutes