This is one of four picture books that deal with a different concept. The books are also intended as first readers or for reading aloud. This book deals with numbers. Judy Hindley has also written "A Piece of String is a Wonderful Thing", "The Wheeling and Whirling-Around Book" and "Into the Jungle". Nick Sharratt's other books include "Tracy Beaker", "My Mum and Dad Make Me Laugh" and "Don't Put Your Finger in the Jelly, Nelly".