Educational GAMES http://nobelprize.org/educational_games/
Tic Tac Toe for Smart People http://www.animaxinteractive.com/banana/Games/tictactoe.html
Geography Game http://www.freepoverty.com/
NAQT (National Academic Quiz Tournament) http://www.naqt.com/
Quiz Games http://www.prongo.com/unitedstates/
US Geography Game http://www.lizardpoint.com/fun/geoquiz/usaquiz.html
Quiz Master http://cybertrain.info/quizman/qmhome.html
SYVUM Quizes http://www.syvum.com/quiz/us/