I recommend the following pages for social studies students:
Geography
The Traveler IQ Challenge will test your knowledge of world geography.
Community Walk allows users to create personalized maps of the things most important to them.
Urban Observatory compares global cities based on different criteria.
Forty Maps that Explain the World and Forty More Maps that Explain the World offer unique views of different topics.
If It Were My Home gives students an excellent perspective on how their lives differ from people in other countries.
History
The Smithsonian History Blog is a wonderful resource for a variety of historical topics.
Awesome Stories dramatizes some of history's most famous episodes.
Footnotes to History is a fascinating compilation of obscure topics throughout world history.
Conversations with History offers interviews with the newsmakers of yesterday and today.
Geography
The Traveler IQ Challenge will test your knowledge of world geography.
Community Walk allows users to create personalized maps of the things most important to them.
Urban Observatory compares global cities based on different criteria.
Forty Maps that Explain the World and Forty More Maps that Explain the World offer unique views of different topics.
If It Were My Home gives students an excellent perspective on how their lives differ from people in other countries.
History
The Smithsonian History Blog is a wonderful resource for a variety of historical topics.
Awesome Stories dramatizes some of history's most famous episodes.
Footnotes to History is a fascinating compilation of obscure topics throughout world history.
Conversations with History offers interviews with the newsmakers of yesterday and today.