Danica McKellar is the New York Times bestselling author of groundbreaking math books, including Goodnight, Numbers, Ten Magic Butterflies , Bathtime Mathtime , Do Not Open This Math Book , and the middle school hit Kiss My Math , and is a summa cum laude graduate of UCLA with a degree in mathematics. She is also well known for her acting roles on The Wonder Years , The West Wing , and multiple Hallmark Channel movies, and as a quarterfinalist on Dancing with the Stars . She lives with her family in Los Angeles. Find her on Facebook, Twitter, and Instagram (and more) at @danicamckellar, and visit McKellarMath.com. Alicia Padrón is known for her sweet characters and soft colors. She lives in Florida with her husband, two children, and dogs Lucy and Luna.