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    Mount Holyoke College
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    In this activity, learners discover how a cabbage juice indicator helps identify acids and bases, and how iodine indicates the presence of starch. Learners test cream of tartar, baking soda, lemon...

    $10 - $20 per student Ages 4 - 8 10 to 30 minutes
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    BioEd
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    In this activity, learners observe what happens when yeast cells are provided with a source of food (sugar). Red cabbage "juice" will serve as an indicator for the presence of carbon...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours