Once upon a time, there was a little girl named Lucy. She had a toy box full of fun things to play with. One day, she found a big cube in the box. The cube was new, and she did not know what it was for. She decided to play with it and see what would happen.
Lucy played with the cube all day long. She rolled it, threw it, and even sat on it. As she played, she started to feel hungry. She remembered that her mom had put a small, round fruit in her lunch box. She decided to eat the fruit to make her tummy happy.
Lucy took a big bite of the fruit. But, oh no! The fruit was very sour! Her face went all funny, and she did not like it at all. She knew that she should not play with the cube and eat at the same time. From that day on, Lucy decided to play with her toys and eat her food only when it was time to eat. And she never forgot the sour fruit that taught her a lesson.
