Danica McKellar's Mathematical Theorem

Danica McKellar says her first love is acting, but she's happy to serve as a role model for young women who are interested in math. hide caption
As a child, actress Danica McKellar played Winnie on the TV show The Wonder Years. Later, she made many appearances on The West Wing. But she's also a mathematician who recently proved her own theorem. McKellar talks numbers with Scott Simon and Stanford professor Keith Devlin.
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