Hot & Cold

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  • Sunburst Thermochromic Putty

    Sunburst Thermochromic Putty

    Changes from orange to yellow using the heat from your hand!
    $10.95
  • Hot & Cold: Science You Can Touch Bundle

    Hot & Cold: Science You Can Touch Bundle

    Seven awesome-and baffling--examples of thermodynamics in action.
    $45.95
  • Soft Shell Ice Cream Balls

    Soft Shell Ice Cream Balls

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    Make your own ice cream, no electricity needed!
    $12.95–$49.95
  • Super Cool Slime

    Super Cool Slime

    Review star icon Review star icon Review star icon Review star icon Review star icon (3 reviews)
    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

    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
  • Heat Pipe Demo

    Heat Pipe Demo

    It is Super Hot and Super Cool!
    $39.95
  • Chemical Heat Pack

    Chemical Heat Pack

    Review star icon Review star icon Review star icon Review star icon Review star icon (14 reviews)
    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

    Review star icon Review star icon Review star icon Review star icon Review star icon (14 reviews)
    Our Heat-Sensitive Paper in three brilliant colors.
    $5.95–$189.50
  • Twilight Color-Changing Putty

    Twilight Color-Changing Putty

    Review star icon Review star icon Review star icon Review star icon Review star icon (2 reviews)
    Changes from purple to blue with the heat from your hand.
    $11.95
  • Heat-Sensitive Periodic Tables

    Heat-Sensitive Periodic Tables

    Review star icon Review star icon Review star icon Review star icon Review star icon (12 reviews)
    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 (8 reviews)
    Great addition to your science table.
    $12.95