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Dark Adaptation
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In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions.
Colors, Colors?
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In this activity related to the famous "Stroop Effect," learners explore how words influence what we see and how the brain handles "mixed messages." Learners read colored words and are asked to say th
How Fast Are You?
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This activity is designed to let learners measure their reaction time or response time to something they see.
A Penny Saved is a Penny Heard
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In this activity (11th activity on the page), learners use pennies to test their hearing acuity.