This book is part of a book series called Discovering How Things Work .

This book has been graded for interest at 7-10 years.

There are 32 pages in this book. This book was published 2011 by Child's World .

Ryan Jacobson is an author and presenter. He prides himself on writing high-interest books for children of all ages, so he can talk picture books in kindergarten, ghost stories in high school, and other fun stuff in between. He lives in rural Minnesota and has been a lifelong Minnesota sports fan.