Danica Mae McKellar (born January 3, 1975) is an American actress, film director, book author and education advocate. She played Winnie Cooper in the television show The Wonder Years, and later wrote four non-fiction books: Math Doesn't Suck, Kiss My Math, Hot X: Algebra Exposed and Girls Get Curves: Geometry Takes Shape, which encourage middle-school and high-school girls to have confidence and succeed in mathematics Source: Wikipedia