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If you know Danica McKellar, you know her as Winnie Cooper, Kevin Arnold’s long time love interest on The Wonder Years. But even Winnie Cooper had to grow up. After the show’s finale McKellar went on to found a math theorem, which she used to spin into a career spent advocating math to young girls. McKellar has published three best-selling math books for young girls and is currently working on a fourth.
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