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In this physics activity, learners will investigate the strength of egg shells.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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This is a quick and simple demonstration about reflexes (second activity on the page).

free Ages 4 - 18 Under 5 minutes
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In this demonstration (9th on the page), learners explore eyewitness memory and how memories differ amongst individuals. While the rest of the group is minding their own business (i.e.

free Ages 8 - 18 10 to 30 minutes
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This magic trick is based on how computers detect and correct data errors.

1 cent - $1 per group Ages 8 - adult 30 to 45 minutes