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Seeing Your Blind Spot
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This activity (aka "snack") provides instructions for discovering your blind spot. It is an exploration of light and visual perception using simple materials you may have around the house.
Arrows
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In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.
Drop IT!: Depth Perception
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These two activities (4th on the page) demonstrate the importance of two eyes in judging depth.
Model Eardrum
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In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.
Oboe? Oh, Boy!
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In this activity, learners create a straw oboe to explore sound and pitch.
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.
Pinhole Magnifier
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In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.
Tiny Pants Photo Challenge
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In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.
Thaumatropes
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In this activity, learners will make a thaumatrope, an old-fashioned optical illusion that dates back to the 1820s.
Are you a Supertaster?
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In this activity, learners examine their tongue and taste buds.
Rainbow Refraction
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In this activity, learners will explore how light can refract or break apart into different colors.
Disappearing Act
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Make a camouflage cut-out animal! Using patterned paper or magazine pictures from around the house, use your craft skills to make a paper animal that blends into its background.
Your Blind Spot
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In this activity, learners will explore how their own eyes work by experimenting with their photoreceptors.
Why is the Sky Blue?
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In this activity, learners create a "mini sky" in a glass of water in a dark room.
Make Your Own Sea Otter
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In this activity about sea otters, learners make their own "otter whiskers" and use them to find objects underwater.
Doppler Effect
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Sound changes pitch relative to how you or the source of the sound is moving. Use this simple activity developed by the Exploratorium to experience the Doppler Effect yourself!
Special Effects: Titanic and Beyond
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In this activity, learners investigate how geometry plays a role in perspective.
Rainbow Glasses
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In this activity, learners explore light, color and rainbows by making their own rainbow glasses.
Whirling Watcher: Make a Stroboscope
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In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through.
Big Sun, Small Moon
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Learners will explore the concept of angular distance, and investigate why the moon appears to be the same size as the sun during a solar eclipse, despite the sun being much larger.