Heat-Sensitive Pencils, Thermochromic: Educational Innovations, Inc.

These unique thermochromic pencils will tell you that "you're getting warmer" as you make your point. These thermochromic pencils will actually change color with the heat from your hand! Excellent motivational prizes or a sure-fire way to guarantee your students won't lose their pencils. 25 pencils in assorted colors.

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Temperature-sensitive Ink - Thermochromic Ink Packaging

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Heat-Sensitive Pencils, Thermochromic: Educational Innovations, Inc.

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Temperature-sensitive Ink - Thermochromic Ink Packaging

Heat Sensitive Pencil (Personalized)

Color Changing Powder Pigment Thermochromic Temperature Heat Sensitive