Reference desk: http://www.refdesk.com/ is a great site for reference material of all types.

Libraryspot.com: http://www.libraryspot.com A free virtual library resource center for educators and students, librarians and their patrons, families, businesses and just about anyone exploring the Web for valuable research information.

Favorite Web Sites For K-12 Students: http://www.ala.org/ICONN/kcfavorites.html Point-n-click your way to the web sites our KidsConnect school library media specialists have found most helpful for K-12 students!

Great books on line: http://www.bartleby.com/ A comprehensive collection of  classic literature, reference and verse resources in full text format.

Literature and language arts resources: http://school.discovery.com/schrockguide/arts/artlit.html A large collection of resources related to reading and language arts.