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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
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In this activity, learners conduct an experiment to investigate the effect of elevated levels on CO2 on plant growth.

$10 - $20 per group Ages 14 - 18 1 to 4 weeks
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In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

Over $20 per group Ages 6 - 18 45 to 60 minutes
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In this lesson, learners will practice graphing and statistically analyzing data.

free Ages 8 - 14 45 to 60 minutes