Discover the world of igneous rocks with 'Lava Cools Then What? ' This book is written for grades 6-8. This educational journey explains the formation classification and practical uses of igneous rocks from the majestic granite of Mount Rushmore to the versatile basalt in road construction. Students will learn about intrusive and extrusive rocks the unique processes behind their creation and their significance in our daily lives. It is a valuable addition to any school library for budding geologists.