Why Did THAT Happen?

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  • Paper Balloon Paradox

    Paper Balloon Paradox

    Review star icon Review star icon Review star icon Review star icon Review star icon (1 review)
    You won't believe your eyes as this colorful balloon slowly fills with air.
    $2.25–$8.95
  • Double Hand Spinners

    Double Hand Spinners

    Review star icon Review star icon Review star icon Review star icon Review star icon (1 review)
    Do fidget spinners really teach anything? You bet they do! Our Double Hand Spinners offer more teachable physics - at...
    $16.95
  • Flow Ring

    Flow Ring

    Constructed from a single strand of thin, flexible metal, the Cosmic Coil is both a kinetic sculpture and a...
    $8.95
  • Persistence of Vision Double Fan

    Persistence of Vision Double Fan

    Review star icon Review star icon Review star icon Review star icon Review star icon (7 reviews)
    A dazzling lesson in persistence of vision!
    $6.95
  • The PhiTOP

    The PhiTOP

    Review star icon Review star icon Review star icon Review star icon Review star icon (4 reviews)
    Makes a perfect gift, desktop display piece, or student stumper.
    $19.95
  • Goldenrod Electrochemistry Kit

    Goldenrod Electrochemistry Kit

    Review star icon Review star icon Review star icon Review star icon Review star icon (1 review)
    Explore the fascinating world of electrochemistry!
    $3.95
  • Static Spheres

    Static Spheres

    Review star icon Review star icon Review star icon Review star icon Review star icon (1 review)
    Our Static Spheres are amusing and educational.
    $3.50
  • The Color Chaos Class Kit

    The Color Chaos Class Kit

    Confounding, compelling, and just plain fun!
    $19.95
  • Light Up Gyro Wheel

    Light Up Gyro Wheel

    Review star icon Review star icon Review star icon Review star icon Review star icon (2 reviews)
    Demonstrate the conversion of potential energy to kinetic energy and back again.
    $3.95
  • Illusion Science

    Illusion Science

    This kit gives students a chance to perform over 20 optical illusion experiments - including the classic morph...
    $12.95
  • Energy Tube

    Energy Tube

    Review star icon Review star icon Review star icon Review star icon Review star icon (18 reviews)
    So much science in this little tube!
    $7.95
  • Centripetal Spinner

    Centripetal Spinner

    Review star icon Review star icon Review star icon Review star icon Review star icon (14 reviews)
    The prettiest demonstration of centripetal force we've ever seen!
    $3.95
  • Bernoulli's Principle Class Kit

    Bernoulli's Principle Class Kit

    Review star icon Review star icon Review star icon Review star icon Review star icon (4 reviews)
    Teach Bernoulli's Principle easily with this kit!
    $7.95–$22.95
  • Glo Germ™

    Glo Germ™

    Review star icon Review star icon Review star icon Review star icon Review star icon (17 reviews)
    Clearly demonstrate how germs are spread!
    $17.95–$59.95
  • Sound Tubes

    Sound Tubes

    Review star icon Review star icon Review star icon Review star icon Review star icon (4 reviews)
    When spun in a circular motion, these tubes produce different tones.
    $3.95–$35.95
  • Pocket Sound Blaster

    Pocket Sound Blaster

    Review star icon Review star icon Review star icon Review star icon Review star icon (2 reviews)
    Our loudest sound demo!!!
    $2.95–$48.95
  • Ultraviolet Detecting Beads

    Ultraviolet Detecting Beads

    Review star icon Review star icon Review star icon Review star icon Review star icon (153 reviews)
    Watch white beads change to bright colors when taken outside!
    $6.95–$324.95
  • Amazing Ice Melting Blocks

    Amazing Ice Melting Blocks

    Review star icon Review star icon Review star icon Review star icon Review star icon (36 reviews)
    One of the most striking thermal energy demonstrations we have seen!
    $22.95
    *Backordered: 2/26/2019
  • Rattlebacks

    Rattlebacks

    Review star icon Review star icon Review star icon Review star icon Review star icon (5 reviews)
    A Rattleback is a half-ellipsoid object carved so that it will spin in only one direction.
    $7.95–$34.95
  • Energy Ball

    Energy Ball

    Review star icon Review star icon Review star icon Review star icon Review star icon (40 reviews)
    The Energy Ball is all you need to safely introduce your students to electric energy.
    $3.95
  • Dropper Popper

    Dropper Popper

    Review star icon Review star icon Review star icon Review star icon Review star icon (26 reviews)
    This incredible device seemingly defies the laws of physics by bouncing higher than where you dropped it from!
    $2.75–$54.95
  • Poly Density Kit

    Poly Density Kit

    Review star icon Review star icon Review star icon Review star icon Review star icon (28 reviews)
    Spontaneous order from disorder! Isn't this a violation of The Second Law??
    $19.95
  • Goldenrod Color-Changing Paper - 100 sheets

    Goldenrod Color-Changing Paper - 100 sheets

    Review star icon Review star icon Review star icon Review star icon Review star icon (26 reviews)
    Turns bright red in bases and returns to bright yellow in acids.
    $16.95
  • Small Gro-Beast Dinosaur

    Small Gro-Beast Dinosaur

    Review star icon Review star icon Review star icon Review star icon Review star icon (5 reviews)
    When placed in water these colorful reptiles expand by about 600%!
    $0.95
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