"Skoob is back and ready to take students on a journey through the neighborhoods in the library. With help from Stacks, the Grand Dewey Daddy Shelf Elf, Skoob explains the three kinds of addresses a book might have. He elaborates on the addresses from the zero hundreds to the 900s, and includes his trademark rhyme with each category. The included library lessons booklet includes fun ideas and activities for each Dewey category." -- publisher's web site