Once upon a time, there was a small sack. It had many shapes inside. One day, the sack met a warm, friendly sun.
"Hi, sack!" said the sun. "Why do you look sad?"
"I have many shapes inside me, but I don't know what to do with them," said the sack.
The sun thought for a moment. "I have an idea! Let's play a game. I will shine my warm light, and you can show me the shapes inside you."
The sack was happy and agreed to play. The sun shined its warm light, and the sack showed a circle, a square, and a triangle. The sun loved the shapes and said, "You did a great job, sack!"
In the end, the sack was happy because it found a friend in the warm sun. They played together every day, and the sack was never sad again.
