Danica Mae McKellar (born January 3, 1975[1]) is an American actress, mathematics writer, and education advocate. She played Kevin Arnold's on-off girlfriend Winnie Cooper in the television series The Wonder Years.　　Danica McKellar　　2018-us-nationalbookfestival-danica-mckellar.jpg　　McKellar at the 2018　　U.S. National Book Festival　　Born　　Danica Mae McKellar　　January 3, 1975 (age 43)　　La Jolla, California, U.S.　　Nationality　　American　　Education　　Bachelor of Science in Mathematics with honors (summa cum laude)　　Alma mater　　UCLA　　Occupation　　Actress, mathematics writer, education advocate　　Years active　　1985–present　　Spouse(s)　　Michael "Mike" Verta (m. 2009–2012)　　Scott Sveslosky (m. 2014)　　Children　　1　　Website　　danicamckellar.com　　twitter.com/danicamckellar　　mckellarmath.com　　From 2010–2013 and 2018–present, McKellar voiced Miss Martian in the animated superhero series Young Justice. In 2015, McKellar was cast in the Netflix original series Project Mc2. She also appears in several television films for Hallmark Channel. She is also the current voice of Judy Jetson from The Jetsons since 2017 due to Janet Waldo's death in 2016.　　In addition to her acting work, McKellar later wrote six non-fiction books, all dealing with mathematics (as she has a bachelor's degree in math from UCLA): Math Doesn't Suck, Kiss My Math, Hot X: Algebra Exposed, Girls Get Curves: Geometry Takes Shape, which encourage middle-school and high-school girls to have confidence and succeed in mathematics, Goodnight, Numbers, and Do Not Open This Math Book.