Encyclopedias

World Book content in Spanish for adults. 

Encyclopedia articles, media, and more in Spanish. For Spanish speakers of elementary age and beyond.

Content for upper-elementary and middle grade students. Users can save, cite, and organize article pages and more with research tools. 

Image-based articles, lesson plans, maps, games, and more learning tools for elementary aged users.

Encyclopedia, dictionary and media resources. Includes a citation builder. Headlines, "Today in History", and other current topics are featured.

World Book Online is a suite of online research tools that includes encyclopedia articles, primary source collections, educator tools, student activities, pictures, audio, and video, complemented by current periodicals and related websites.