World Book Advanced
For high school and college students World Book Student
For middle-school students World Book Kids
For younger students
World Book Discover
A differentiated instruction reference site for middle- and high-school students. World Book Dramatic Learning
A proven approach to building reading fluency and content comprehension through classroom drama. Early World of Learning
The premier online resource for preschoolers and children in early grades. Living Green Digital Library
Explores environmental issues and efforts to reduce human impact on the environment. Early Peoples Digital Library
Explores the history of great ancient cultures and civilizations. Inventions and Discoveries Digital Library
An extensive exploration of great inventions and discoveries. World Book Online Reference Center
A public library site for advanced researchers World Book Online Info Finder
For school-aged public library patrons World Book Online for Kids
For young public library patrons. Gran Hispanica Online
Spanish-language encyclopedia World Book L'Encyclopédie Découvertes
French-language encyclopedia Science Power
Science Power is an engaging and visually rich supplemental science site for the upper elementary grades.