Sheldon Robinson - The leaves are black and dead. I know that rocks are hard. If you break an old rock you can find fossils. Some rocks are big and some are small. You can make a rock out if mud.
Rocks are different.
First, they collected rocks from their neighborhood. They weighed them and used their senses of sight and touch to describe them. Omar Smith and Gerald Brown of 210 collected 12 rocks. Here is how they described six of them. It is smooth.