One day, a boy named Tom found a clean, shiny rock. He thought it was special and had value. He showed it to his friend, Sally.
"Look what I found!" Tom said. "It's clean and shiny. I think it has value."
Sally looked at the rock and said, "It's nice, but I don't think it has value. You should leave it here."
Tom felt sad but agreed to leave the rock. They went to play in the park. While they were playing, a man saw the shiny rock. He picked it up and smiled. He knew it was special and had value.
The man took the rock to a store. The store owner was happy to see the shiny rock. He gave the man lots of money for it. The man was very happy. Tom and Sally didn't know they left something so special.
