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In this chemistry demonstration, learners will discover that phenolphthalein is an acid/base indicator. One learner will read a poem about four witches making a potion.

$1 - $5 per group Ages 11 - 18 5 to 10 minutes
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Learners investigate how the temperature of water affects its density.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Learners see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Learners develop an understanding of air pressure in two different activities.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners explore work, forces, simple machines, and construction. This lesson guide includes simple ways to demonstrate these principles as well as hands-on activities.

$1 - $5 per group Ages 4 - 8 1 to 2 hours