Sort a collection of different rocks. How many ways can you classify them? Think about classifying them by size, color, hardness, or other features.

Learn to identify rock types by comparing them to pictures in a geology book.

How true is the saying, “Solid as a rock?” Collect different kinds of rocks and weigh them individually. Soak them in water and weigh them again. Did their weights change or stay the same? Why? Take a closer look at any rocks that gained weight. Make predictions about why they did. Test your ideas. What does your investigation tell you about how solid rocks are?

Rocks in nature are formed in many ways. What keeps them together? Make at least three different rock recipes. Use ingredients such as straw, mud, sand, clay, glue. You can make them edible by using cookie dough and include M&M’s, gum drops, chocolate chips, peanut butter, etc. You get the idea! Name your recipe and predict which one will be hardest or strongest? Why?

Go on a rock hunt with your family. Have everyone pick out a favorite rock. Put them in a pile. Close your eyes and see if you can identify your rock just by feeling the rocks with your hands. No peeking!