Growing Ear This Growing Ear is guaranteed to grow 500 times its size. email to friend
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This Growing Ear is guaranteed to grow 500 times its size when soaked in water! Does that mean it can hear better? Maybe you can teach it to eavesdrop on your friend's conversations! Includes one ear, ready to grow. Non-toxic and safe to touch, the Growing Ear provides science fun for kids of any age.

What's included?

- 1 Growing Ear

How does it work?

The Growing Ear is really (don't tell it) made of superabsorbent polymers, designed to absorb more than 150 times their weight in water! Watch the Ear grow before your eyes and learn a little anatomy along the way. Be sure to listen!

*Use purified water for best results.

What does it teach?

Discover how thirsty polymers perform very important functions in everyday life. They're used in everything from baby diapers to environmental cleanup materials! Aside from their environmental and industrial uses, discover how different kinds of polymers help these "growing toys" keep their shape as they expand.