Call Number Matching for the Dewey Decimal System and Using a Library Catalog handouts and practice worksheets to teach media center library skills. First handout explains the DDS, and on the supporting worksheet students match the call number to the book, and put them in order, numerically and alphabetically. Answer key included. There is also a handout for Using a Library Catalog (describes the card catalog and how it transferred to an online catalog) and practice for students to look up books