Geology is an important part of the science curriculum. Having to do with Earth's physical features and the processes by which they change over time, geology is a part of every reader's life--even if they don't realize it! This set focuses on Earth's minerals and the types of rocks, including igneous, metamorphic, and sedimentary rocks. As Earth's surface continues to undergo changes because of the rock cycle, readers are equipped with the knowledge and understanding of these crucial functions, helping to further their STEM learning from outside of the classroom.