(Sample link) NASA for middle-school studentshttp://www.nasa.gov/audience/forstudents/5-8/features/index.html
(Sample link) National Geographic for Kidshttp://www.nationalgeographic.com/kids/
CIA World Factbookhttp://www.odci.gov/cia/publications/factbook/geos/rs.html
Ancient China to Modern Timeshttp://members.aol.com/TeacherNet/AncientChina.html#Ghengis
Good Student sitehttp://bensguide.gpo.gov/6-8/index.html
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