2007 Wikipedia Selection for schools
- Selection of Wikipedia articles chosen and checked for accuracy.
- http://www.schools-wikipedia.org

Wikipedia
- Free volunteer-edited encyclopedia with over a million articles.
- http://en.wikipedia.org/wiki/Main_Page

VetCentric Encyclopedia
- Find articles on animal health care topics ranging from behavior and preventive care to common and not-so-common diseases.
- http://www.vetcentric.com/reference/encyc.cfm

Open Site
- A volunteer-run open content encyclopedia, inspired by the Open Directory Project.
- http://open-site.org/

wordIQ.com
- An online encyclopedia with more than 400,000 pages of content.
- http://www.wordiq.com/encyclopedia.html

Encyclopedia Smithsonian
- Links to online Smithsonian resources and answers to frequently asked questions from A to Z.
- http://www.si.edu/resource/faq/start.htm

Bartleby.com Reference
- Reference site allows you to search over the Columbia Encyclopedia, the Encyclopedia of World History, fact books, thesauri, quotes, and more.
- http://www.bartleby.com/reference/

How Stuff Works
- Articles explain how hundreds of things work, from elements of the human body to space-age technology.
- http://www.howstuffworks.com/

MSN Encarta Encyclopedia
- Online home of the Encarta encyclopedia, world atlas, dictionary, thesaurus, multimedia, and homework tools.
- http://encarta.msn.com/

Instrument Encyclopedia
- A guide to more than musical 140 instruments from all parts of the world. Includes photographs and descriptions.
- http://www.si.umich.edu/chico/instrument/

Columbia Encyclopedia - 6th edition
- Comprehensive online encyclopedia and database of over 51,000 entries.
- http://www.bartleby.com/65/

Spartacus Educational
- British online encyclopedia focuses on historical topics. Articles are geared toward students.
- http://www.spartacus.schoolnet.co.uk/

World Book Encyclopedia
- Offers in-depth information on a variety of subjects and educational activities for children.
- http://www.worldbook.com/

EncycloZine: Learning Fun!
- EncycloZine is a concise illustrated encyclopedic portal covering a wide range of topics in the arts, humanities, sciences, and technology. It also features games, puzzles, quizzes, and a multimedia gallery.
- http://encyclozine.com/

Children's Encyclopedia of Women
- Collection of articles about famous women written by third and fourth grade students.
- http://www2.lhric.org/pocantico/womenenc/womenenc.htm

TechEncyclopedia
- Contains descriptions and definitions of more than 14,000 computer terms and concepts.
- http://www.techweb.com/encyclopedia/

Encyclopaedia Britannica
- Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. Free trial available.
- http://www.britannica.com/

Encyclopedia.com
- Free resource offers more than 57,000 concise articles.
- http://www.encyclopedia.com/