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The Geophysical Light/Dark Cycle
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This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel.

Right Foot/Left Foot
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In this activity (2nd on the page), learners conduct a series of tests to find out which foot is more dominant. In other words, are they right-footed or left-footed?

Measuring Your Breathing Frequency at Rest
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In this activity about the brain and sleep (on page 138 of the PDF), learners measure their resting breathing rates. Learners will discover that breathing frequencies vary amongst individuals.

CD Spinner
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In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.

Right Hand/Left Hand
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In this activity (1st on the page), learners conduct a series of tests to find out which of their hands is more dominant. In other words, are they right-handed or left-handed?

Our Sense of Sight: Color Vision
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In this activity, learners investigate color vision as well as plan and conduct their own experiments.

Drugs, Risks and the Nervous System
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In this activity, learners estimate risks associated with different events and compare their estimates to the real possibilities.

The Space Place
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In this activity (23rd on the page), learners conduct an experiment to examine memory and learning.

Now or Later: The "Recency/Primary" Effect
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In this activity (18th on the page), learners conduct an experiment to examine memory.

Exercise and Memory
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This activity (page 1 of the PDF under SciGirls Activity: Exercise and Memory) is a full inquiry investigation into the effects of exercise on short term memory.

How Quick Are Your Responses?
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In this activity (on page 134 of the PDF), learners explore reaction time.

Built in Stopwatch
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In this activity (3rd on the page), learners investigate circadian rhythms by examining how well people do with estimating time.

Mirror-Tracing
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This mirror-tracing activity related to proprioception is a visual and motor test that involves learning a new motor skill.

Visualizing How the Vestibular System Works
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In this activity (page 59 of the PDF), learners spin and observe false eyelashes in jars of water (prepared at least 1 day ahead of time) to investigate the effects of different types of motion on the

Altered Reality
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In this activity, learners discover that the human brain is highly adaptable. Learners try to toss beanbags at a target while wearing prism goggles.

Pea Brain!: Explorations in Estimation
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In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.

Building a 3-D Space Maze: Escher Staircase
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In this activity (page 95 of the PDF), learners create Escher Staircase models similar to those that were used by Neurolab's Spatial Orientation Team to investigate the processing of information about

Experiencing Parallax With Your Thumb
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In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

Our Sense of Sight: How We Perceive Movement, Depth and Illusions
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In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

Reaction Time
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In this activity, learners explore reaction time and challenge themselves to improve their coordination. Do you want to move faster? Catch that ball that you never seem to see in time?