Once upon a time, in a land with long hills, there was a little boy named Tim. Tim had a big toy truck that he loved to play with. One day, Tim and his friend Sam were playing with the toy truck on a hill.
As they played, Tim and Sam started to disagree about which way the truck should go. Tim wanted the truck to go up the hill, and Sam wanted the truck to go down the hill. They both pushed the truck, but it did not move.
Then, Tim had an idea. He said, "Let's put the truck on its side and see which way it tips!" Sam agreed, and they put the truck on its side. The truck tipped down the hill, and Tim and Sam laughed. They played together all day, happy to find a fun way to solve their disagreement.
