This book is part of a book series called Lets-Read-And-Find-Out Science-Stage 2 .

This book has been graded for interest at 5-9 years.

There are 28 pages in this book. This book was published 1997 by Perfection Learning .

Wendy Pfeffer enjoyed early careers as a teacher and a nursery school director. She now devotes her time to writing and conducting workshops on creative writing for both adults and children. She is the author of the Let's-Read-and-Find-Out Science book Sounds All Around as well as The Gooney War and Popcorn Park Zoo. Ms. Pfeffer lives in Pennington, New Jersey. James Graham Hale has illustrated several other books for children, including 'Round and Around by James Skofield; Through Moon and Stars and Night Skies by Ann Turner, a Reading Rainbow Featured Selection; and Barney Is Best by Nancy White Carlstrom. Mr. Hale lives in Ulster Park, New York. Franklyn M. Branley was the originator of the Let's-Read-and-Find-Out Science series and the author of close to 150 popular books about scientific topics for young readers of all ages. He was Astronomer Emeritus and former Chairman of the American Museum of Natural History-Hayden Planetarium. Michael Rex learned to draw in Chatham, New Jersey, and studied at the School of Visual Arts in New York City. Who Digs? and Who Builds? are his first two books with HarperCollins. Mr. Rex lives in Brooklyn, New York.