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/
Fun activities - by girls....for girls. http://www.missoandfriends.com/
General Motors Corporation Environmental activities, games & learning. http://www.gm.com/experience/education/5-8/index.jsp
World Maths Day practice & registration beginning February 1, 2009. Takes place on March 4, 2009. http://www.worldmathsday.com/