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    COSI
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    In this chemistry activity, learners will learn how to make their own pH indicator using cabbage leaves, and then test common household items with their homemade indicator. This is an excellent...

    $5 - $10 per group Ages 14 - 18 10 to 30 minutes
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    In this chemistry activity (page 5 of the PDF), learners make an acid-base indicator using cabbage. Learners then explore how various subtances react with this indicator. Though this activity was...

    Over $20 per group Ages 8 - 18 30 to 45 minutes

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