Hypercolor Thinking Putty is thermochromic — just a touch from your hands will reveal a new “hot” color. Allow it to cool off or stick it in the fridge! Then the “cool” color will be restored.
Invisible in the jungle but sure to stand out in your students’ hands, Chameleon Thinking Putty’s lush, tropical green explodes into a bright fluorescent yellow with just a touch of heat. And, unlike the real thing, all this Chameleon needs is a daily squeezing!