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Information on the history, people, government, economy, geography, communications, transportation, military, and transnational issues for 267 world entities.

Learn math the fun way.

Explores science, health and travel.

Brings K-12 homework sites together in one convenient spot.

A comprehensive directory of sites for young people; listed by subject.

Opposing Viewpoints in Context

Research, analyze, and organize data on today's hottest social issues. Get help with writing assignments, preparing for debates, creating presentations. Includes pro and con viewpoint essays, primary source documents, periodical articles, maps, and more.

Help for high school students in preparing for New York State regents exams.

Homework help: Free Online Interactive K-12 Quiz Games (iPad-Compatible)

Study guides (like Cliff Notes) for literature and other subjects. Full text classic books included.

Internet math resources for K-12 and college.

A question and answer service for math students in grades K-12.

Interactive planetarium.