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What Molecules Make the Holes in Bread?

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In this activity, learners will discover why there are holes in bread.
$10 - $20 per group Ages 8 - 18 30 to 45 minutes

Shrinky Dinks

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Heat makes some materials expand, and it makes others shrink.
1 cent - $1 per student Ages 4 - 11 30 to 45 minutes