NASA for middle-school students http://www.nasa.gov/audience/forstudents/5-8/features/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
History Channel http://www.historychannel.org
Progressive Timeline http://chnm.gmu.edu/7tah/units/timeline.pdf
Mr. Roberto's Group
classzone
DBQ
Wiki per. 3 http://blogcast.wappingersschools.org/groups/robertoper3/
Review Quizzes http://www.mw.k12.ny.us/schools/middle/em/quiz/ssreview.html#Series 2
Assessment Review http://www.regentsprep.org/Regents/ushisgov/ushisgov.cfm