Hot & Cold

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  • Amazing Ice Melting Blocks

    Amazing Ice Melting Blocks
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    One of the most striking thermal energy demonstrations we have seen!
    $21.95
  • Chemical Heat Pack

    Chemical Heat Pack
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    Click a metal disk and watch the liquid crystallize.
    $7.95–$99.95
  • Heat-Sensitive Pencils

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

    GLOSSY Heat-Sensitive Paper
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    Our Glossy Heat-Sensitive Paper in four brilliant colors.
    $19.95–$189.50
  • 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
  • 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