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    COSI
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    In this geology activity (page 6 of the PDF), learners explore how carbonic acid can slowly dissolve limestone and form caves. They see firsthand that the carbonation in soda has the same effect in...

    $1 - $5 per group Ages 11 - 14 10 to 30 minutes
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    Make
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    In this chemistry meets cooking activity, learners make carbonated, vanilla ice cream using dry ice and denatured ethanol, which are both inexpensive and accessible. This process to make ice cream...

    Over $20 per group Ages 8 - adult 45 to 60 minutes
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    In this chemistry activity (page 8 of the PDF), learners will identify the instances of physical change, chemical change, and solutions while making homemade soda pop. They will watch as yeast in...

    $10 - $20 per group Ages 8 - 14 1 to 7 days