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In this easy demonstration (3rd on the page), learners explore depth perception by conducting a test with two pencils.

free Ages 4 - 18 Under 5 minutes
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These two activities (4th on the page) demonstrate the importance of two eyes in judging depth.

1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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In this quick activity/demonstration (5th on the page), learners explore depth perception.

free Ages 6 - 18 Under 5 minutes