Picture is self-explanatory. Story sandwich concept helps child to make relation, connection of the story and composition.
Kayden tried by visualizing his morning breakfast - ham & cheese sandwich. He understood that there were 4 to 5 layers: bread, ham, cheese, vegetable, bread.
Then we made a direct relation with a simple and short mini story in, say 5 sentences:
Bread - Lou Lou is a lazy lizard.
Ham - Friends wanted to play with Lou Lou but she refused.
Cheese - A small lizard dropped into the lake!
Vegetables - Lou Lou dived in to rescue!
Bread - Friends celebrated Lou Lou's brave action and Lou Lou became a Life Guard by the lake. She is no longer lazy anymore!
More details at http://www.readingrockets.org/strategies/paragraph_hamburger