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In this activity learners compare the bounciness of warm and cold racquetballs to see if temperature makes a difference in how well they bounce.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity on page 8 of the PDF, learners make a slimy substance very similar to mucus, and sprinkle it with glitter to imitate the way that allergens are trapped.

$5 - $10 per student Ages 6 - 18 10 to 30 minutes
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In this activity, learners build their own rockets from paper, coffee stirrers, and tape. Learners discover that when anything flies, air pressure is always involved.

1 cent - $1 per group Ages 4 - 11 10 to 30 minutes