I just found a cute little flash game from St. Ann's School in NY, dealing with rhythms in simple meter: You listen to the rhythm, and then turn over the cards until they match the rhythm you hear. It's extremely simple, but could be useful for anyone still uncertain about these rhythms, and may be useful to any of you who go on to be music educators:
Rhythm Writer Game
Remember that there are many resources available to help you! Use them!