Aesop's Fables scenes:

You must memorize your lines. 
You must try to create a clear character.  If you are playing an animal, you need an animal voice and a way of moving that evokes the animal.  If you are a human, do the same thing but create a personality for the character.
You need a framework through which you perform your two stories.  Try to connect the framework to the stories.
Use the stories to think of motivation and blocking for your character.
Show what you've learned.  Use tableaus, mimes, music, light and choral speaking in your plays.
Make your moral memorable.
Think of something your group can wear that makes you look like a group (but not particular costumes for each animal).
On stage, project your voice and speak clearly.  Listen to the other actors -- their dialogue will help you remember your lines.