Once upon a time, there was a little baby named Tim. Tim was very persistent. He did not like to sleep in his crib. Every night, Tim would cry and cry. He wanted to sleep with Mom and Dad.
One day, Mom and Dad had an idea. They said, "Let's play a game, Tim! If you sleep in your crib all night, you will win a big toy!" Tim liked toys. He thought, "I will try to sleep in my crib tonight."
That night, Tim went to his crib. He closed his eyes and tried to sleep. It was hard, but he was persistent. He did not cry. In the morning, Mom and Dad were happy. They said, "You win, Tim! You slept in your crib all night!" They gave Tim a big toy. Tim was happy. From then on, he slept in his crib every night.
