(Sample link) NASA for high school students http://www.nasa.gov/audience/forstudents/9-12/features/index.html
(Sample link) National Geographic http://www.nationalgeographic.com
Webquest over election http://cactusranchwebquest.wikispaces.com/
EU Webquest http://europa.eu/abc/index_en.htm
Brown v. Board Education http://brownvboard.org/summary