Mind Bogglers and Science Games

Designed by Theodore Gray, the creator of the Elements of the Periodic Table Poster, our beautiful 1000-piece puzzle is sure to delight puzzle aficionados of all ages. Can you remove the quarter from The Challenge Coin Puzzle? Easier said than done! Constellations Knowledge Cards each show a constellation on the front and the name and pertinent information on the back. The double deck of Periodic Table Playing Cards features one element per card. Included for each element is its name in English, French, and Spanish; its atomic number, mass, melting and boiling points; and relevant usages.
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  • Construct-A-Clock

    Construct-A-Clock

    This kids construction set is an ingenious way to encourage your child's cognitive development as they learn how...
    $15.95
  • Exit: Escape Room Kits

    Exit: Escape Room Kits

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    Solve all the puzzles to get out!
    $14.95
  • Persistence of Vision Double Fan

    Persistence of Vision Double Fan

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    A dazzling lesson in persistence of vision!
    $6.95
  • Harbottle Differential Pressure Demonstration

    Harbottle Differential Pressure Demonstration

    Teach about the amazing properties of air pressure.
    $23.95
  • The SpillNot

    The SpillNot

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    A fabulous solution to the ubiquitous problem of spills.
    $12.95
  • Periodic Table Jigsaw Puzzle

    Periodic Table Jigsaw Puzzle

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    This 1000-piece puzzle is sure to delight puzzlers of all ages.
    $19.95
  • Bone Playing Cards

    Bone Playing Cards

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    This unique deck of playing cards lists every bone of the human body.
    $8.95
  • Milk Bottle & Egg Demo

    Milk Bottle & Egg Demo

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    It's all about Air Pressure! - A Classic Demonstration!
    $14.25
  • The Disappearing Beaker

    The Disappearing Beaker

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    A great demonstration of 'index of refraction'.
    $9.95
  • Constellations Knowledge Cards

    Constellations Knowledge Cards

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    So much astronomy on these little cards!
    $10.95
  • Optical Illusion Card Deck

    Optical Illusion Card Deck

    This deck of high quality playing cards includes a different optical illusion on every card.
    $7.95
  • Dioxide Glass Puzzle

    Dioxide Glass Puzzle

    Why would the cylindrical lens invert the blue colored word and not the red one?
    $19.95
  • Mirascope

    Mirascope

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    Project a real image that you can put your finger through. Using two concave, parabolic mirrors, a small object...
    $7.95
  • Mysterious Glowing Ball

    Mysterious Glowing Ball

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    When spun in a circle by the cord, one can see the white light separate into blinking red, blue, and green lights.
    $6.95–$17.50
  • Inverting Pop Tops

    Inverting Pop Tops

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    When these small wooden tops are spun, they start precessing until the heavier hemispherical end is lifted, seemingly...
    $5.95–$19.95
  • Mysterious Spinning Top

    Mysterious Spinning Top

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    Give this top a spin and watch it move for hours without stopping.
    $11.95
  • Drinking Bird

    Drinking Bird

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    Simply moisten the bird's head with water, place it next to a full glass of water and watch as the bird periodically...
    $5.95–$64.95
  • Amazing Ice Melting Blocks

    Amazing Ice Melting Blocks

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    This is one of the most striking thermal energy demonstrations we have seen in a long time.
    $22.95
  • Buzzing Stunt Magnets (Set of 2)

    Buzzing Stunt Magnets (Set of 2)

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    When tossed in the air, these special magnets produce a clattering sound, much like a Cicada or high voltage sparking.
    $3.95
  • Flowing Color Spectrum

    Flowing Color Spectrum

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    When inverted, three different colorful droplets appear to be changing shape as they fall from the top reservoir of...
    $6.95
  • Poly Density Kit

    Poly Density Kit

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    When the 1L bottle is shaken, blue and white beads mix as expected. However, when allowed to settle, a surprising...
    $19.95
  • Fortune Fish

    Fortune Fish

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    Science phenomenon at its best!
    $6.95–$12.95
  • Periodic Table Playing Cards

    Periodic Table Playing Cards

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    Great for discovering facts about the elements while playing cards!
    $15.95
  • One Minute Mysteries: 65 Short Mysteries You Solve With Science!

    One Minute Mysteries: 65 Short Mysteries You Solve With Science!

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    Solve short mysteries with a clever science twist.
    $12.95