Here are some fun ways to practice your map skills!
http://www.sheppardsoftware.com/states_experiment_drag-drop_Intermed_State15s_500.html
http://www.lizardpoint.com/fun/geoquiz/usaquiz.html
http://bensguide.gpo.gov/flash/states_game2.html
http://www.yourchildlearns.com/mappuzzle/us-puzzle.html