Once upon a time, there was a little boy named Tim. Tim loved to draw. One day, he drew a big circle on a piece of paper. He was very proud of his circle. 
Tim showed his circle to his friend, Sam. Sam didn't know what a circle was. He was ignorant about shapes. Tim wanted to teach Sam about circles, so he said, "Hurry, let's go to the park and find circles!"
At the park, Tim and Sam found many circles. They saw a big round ball, a wheel on a bike, and a round cookie. Sam learned what a circle was and was happy. Tim and Sam played with the circles all day long.
