Need extra help? Want extra practice? Check out some of these websites for some fun exercises and games that can help perfect your music literacy skills!
www.musictheory.net - You can find many different lessons and exercises for note reading, intervals, chords, key signatures, etc...
http://www.themusicinteractive.com/classroom-apps.html - Staff Wars is a game that helps with note reading
http://www.musictechteacher.com/music_quizzes/music_quizzes.htm- Tons of music games, quizzes, and worksheets for extra practice.
http://pbskids.org/games/music/ - Perfect for younger kids
http://trainer.thetamusic.com/ - Music and Ear Training games