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Experience a spinning spiral...you won't be hypnotized, but you'll see what happens when you look away. It's like getting off a merry-go-round and everything keeps moving.

1 cent - $1 per student Ages 6 - adult Under 5 minutes
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This science activity demonstrates the dominant eye phenomena. What does your brain do when it sees two images that conflict?

1 cent - $1 per student Ages 4 - adult Under 5 minutes