We use rocks to create beautiful statues. Your mom might even wear a rock on her finger. Diamonds, rubies, and other precious stones are all rocks. You use a rock every day when you write with your pencil. Knock, knock, I am a rock I am hard . .
Rocks are pieces of the earth.
In a learning center, have the students classify the rocks into different groups. To test hard or soft, have them use a nail to scratch. All the earth is made of rocks. Rocks are pieces of earth. Some are large and others are very small.