Beginning readers will explore how hammers pound in and pull out nails. A back matter spread explains how hammers are one kind of simple machine: a lever.
About the Author
Robin Nelson's careers have always kept her surrounded by booksas an elementary teacher, working at a publishing company, and now working as a school library media specialist. But her favorite job is writing books for kids. She has written many nonfiction books for children. She lives with her family in Minneapolis.