Hot & Cold

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  • Heat-Sensitive Putty - Epic Amethyst

    Heat-Sensitive Putty - Epic Amethyst

    A deep purple putty that gradually warms to bright pink.
    $14.95
  • Ice Cream Flavors (Set of 4)

    Ice Cream Flavors (Set of 4)

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    Why struggle with difficult ice cream recipes?
    $12.95
  • Super Cool Slime

    Super Cool Slime

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    We all know that slime's cool, but this slime is REALLY cool - literally!
    $3.95
  • Climate Change Mug

    Climate Change Mug

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    Add hot water and observe as Florida and California disappear!
    $12.95–$69.95
  • Heat Activated Constellation Mug

    Heat Activated Constellation Mug

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    Add a hot liquid. Watch as several well-known constellations appear!
    $12.95–$69.95
  • Disappearing Dinosaurs Mug

    Disappearing Dinosaurs Mug

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    Watch eons pass before your eyes over a cup of coffee.
    $12.95–$69.95
  • Amazing Ice Melting Blocks

    Amazing Ice Melting Blocks

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    One of the most striking thermal energy demonstrations we have seen!
    $23.95
  • Chemical Heat Pack

    Chemical Heat Pack

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    Click a metal disk and watch the liquid crystallize.
    $6.95–$74.95
  • Heat-Sensitive Pencils

    Heat-Sensitive Pencils

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    Excellent motivational prizes for students of all ages!
    $11.95
  • Heat-Sensitive Paper

    Heat-Sensitive Paper

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    Our Heat-Sensitive Paper in three brilliant colors.
    $5.95–$189.50
  • Heat-Sensitive Periodic Tables

    Heat-Sensitive Periodic Tables

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    Our periodic tables change color when heat is applied.
    $17.95
  • Liquid Crystal Sheets (12x12 inch)

    Liquid Crystal Sheets (12x12 inch)

    Review star icon Review star icon Review star icon Review star icon Review star icon (6 reviews)
    These laminated sheets of liquid crystal are temperature sensitive.
    $25.95
  • Liquid Crystal Sheets (4x4 inch)

    Liquid Crystal Sheets (4x4 inch)

    These laminated sheets of liquid crystal are temperature sensitive.
    $7.95
  • Touch and See Square

    Touch and See Square

    Review star icon Review star icon Review star icon Review star icon Review star icon (9 reviews)
    Great addition to your science table.
    $12.95