This book is part of a book series called Number Worlds .

This book was published 2014 by McGraw-Hill Education - Europe .

Kitty Griffin was born in Germany and adopted by Americans. She has traveled from one end of the USA to the other, living at twenty-eight different "permanent" addresses, with much of her childhood spent in Virginia. She has worked as a counselor, a mailman, a waitress, a secretary, and, of course, as a children's book author. She teaches in the MFA Writing for Children program at Chatham University in Pittsburgh, PA. She lives in Washington County, Pennsylvania with her husband and assorted furry friends. She can also be found at www. kittygriffin. com. Marjorie Priceman, illustrator of many acclaimed picture books, has won Caldecott Honors for her illustrations in Zin! Zin! Zin! A Violin! by Lloyd Moss and Hot Air: The (Mostly) True Story of the Frist Hot-Air Balloon Ride, which she also wrote. She lives in Lewisburg, Pennsylvania.