Subtraction at school

Jennifer Roy (born May 26) is an American children's writer. She is best known for fiction including Yellow Star, which won a Boston Globe-Horn Book Honor Award (2006), Sydney Taylor Honor Award, The William Allen White Children's Book Award (2009), a New York Public L Book, an ALA Notable Book, National Jewish Book Honor Award, and received starred reviews in Publishers Weekly, School Library Journal, VOYA and Booklist. She has written 35 educational books for children ages 5–16, including the "You Can Write" series. Her first illustrated book is Jars of Hope, published August 2015. She also co-authored the Trading Faces series with her twin sister, Julia DeVillers.