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Showing results 21 to 40 of 59

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

free Ages 6 - 18 Under 5 minutes
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If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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Learners mix a solution of luminol with hydrogen peroxide to produce a reaction that gives off blue light.

$1 - $5 per group Ages 4 - adult Under 5 minutes
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Which one of your eyes are dominant? Do they act independently or are they equally "in control?" This activity explores how your eyes work (or don't work) together.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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We're told from a young age that we have 5 senses, but we have many more. One of which is our awareness of our own body part's orientation and position.

free Ages 6 - 18 Under 5 minutes
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We listen to stereo music systems, tv's, and radios because it simulates being where the sound originates.

free Ages 4 - 14 Under 5 minutes
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In this activity (13th on the page), learners complete a simple illusion trick to see through their own hand.

1 cent - $1 per group Ages 8 - 18 Under 5 minutes
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Known as the waterfall effect, this activity demonstrates adaptation in our visual system.

free Ages 6 - 14 Under 5 minutes
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Exponga estos pósteres en el salón o déjelos donde los chicos los puedan explorar. Los chicos buscan las respuestas en libros de consulta o en línea.

free Ages 6 - adult Under 5 minutes
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In this activity about vision and optical illusions, learners conduct a simple test to demonstrate how our eyes create "afterimages." Learners stare at a black cardboard bat for at least 30 seconds an

1 cent - $1 per student Ages 8 - 18 Under 5 minutes
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In this activity, learners create an optical illusion by spinning two attached cups. A round ball seems to magically appear when the cups spin.

1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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We don't normally view people upside down and so our brains aren't accustomed to it.

free Ages 4 - 18 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
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In this optics activity, learners use water to make a coin "appear" and "disappear." Use this activity to demonstrate how light refracts and introduce light as waves.

1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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Sound can travel through a variety of media.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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In this activity, learners create a water prism to break light into the seven colors of the rainbow.

free Ages 6 - 11 Under 5 minutes
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In this optics activity, learners use glass and water to demonstrate total internal reflection (TIR).

free Ages 8 - 14 Under 5 minutes
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In this activity, learners discover how hard their hearts work to pump blood.

free Ages 4 - 14 Under 5 minutes
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Put a string around your head, and play it! Learn about vibration, sounds, and pitch.

1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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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