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It's a Gas, Man

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In this activity, learners discover if carbon dioxide has an effect on temperature.
1 cent - $1 per group Ages 6 - 14 1 to 2 hours

Make a Terrarium

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In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.
$1 - $5 per student Ages 8 - 18 1 to 7 days