User login


Search Results


Showing results (1 to 10 of 21)

  • Thumbnail
    University of Washington
    Add to list Details
    In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors. Learners arrange jars, each filled with water and different amounts of food coloring,...

    1 cent - $1 per group Ages 8 - 18 5 to 10 minutes
  • Thumbnail
    University of Washington
    Add to list Details
    In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions. Learners sort similar bottle caps in a well-lit...

    free Ages 8 - 18 10 to 30 minutes
  • Thumbnail
    University of Washington
    Add to list Details
    In this activity (13th on the page), learners complete a simple illusion trick to see through their own hand. Learners roll up a piece of notebook paper into a tube, arrange their hands in a...

    1 cent - $1 per group Ages 8 - 18 Under 5 minutes
  • Thumbnail
    The Exploratorium
    Add to list Details
    In this trick, hold your hand over a burning candle without getting burned, by reflecting and transmitting the light of two candles. This activity is best suited as a demonstration.

    $1 - $5 per group Ages 8 - 18 5 to 10 minutes
  • Thumbnail
    Twin Cities Public Television
    Add to list Details
    In this activity (on page 2 of the PDF), learners will see the illusion of colors produced by a rotating black and white image known as Benham’s Disk. They will experiment with rotation direction...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
  • Thumbnail
    The Exploratorium
    Add to list Details
    How can you make one shade of gray look like two? By putting it against two different color backgrounds! This activity allows learners to perform this sleight of hand very easily. They will be...

    $1 - $5 per student Ages 8 - 18 30 to 45 minutes
  • Thumbnail
    University of Washington
    Add to list Details
    In this activity (1st on the page), learners find their blind spot--the area on the retina without receptors that respond to light. Learners can draw their own blind spot testers, use the provided...

    1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
  • Thumbnail
    The Exploratorium
    Add to list Details
    In this fun and interactive online exhibit, the straight lines of a tile wall appear to curve. The learner moves the rows of tiles and changes the color of the grout to achieve the intriguing...

    free Ages 4 - 18 5 to 10 minutes
  • Thumbnail
    University of Washington
    Add to list Details
    These two activities (4th on the page) demonstrate the importance of two eyes in judging depth. In the first activity, two learners compare the accuracy of dropping objects into a cup using only...

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
  • Thumbnail
    University of Washington
    Add to list Details
    In this activity (16th on the page), learners play a variation of the "I Spy" game to explore color. Learners work in teams with each team assigned a color. Learners are given 10 minutes...

    1 cent - $1 per group Ages 4 - 11 10 to 30 minutes

Pages