Using the Fortune Teller Fish Hygroscopic Polymer Demonstration, place a fish in your palm and watch it curl up. Have students hypothesize about how it works and why. Is there a scientific basis to it, or can it really tell your fortune?
Place the fish in your palm and watch it curl up or even flip over. Have your students hypothesize about how it works and why. Is there a scientific basis to it—or can it really tell your fortune? Made of a hygroscopic polymer, the red cellophane 3½" fish expands as it absorbs water. The moisture from your hand therefore determines the amount of curling or movement of the fish. An interesting phenomenon! Sold in packages of 12.
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