Introduce your students to the changes in and interactions among the atmosphere, biosphere, geosphere, and hydrosphere with THE FOUR SPHERES ACTIVITY BOOK from the Science Foundations Curriculum series. The Four Spheres illustrates the characteristics of each sphere, explores the ways changes in one sphere can affect changes in another, and contains multiple activities—including three review activities—to keep your students engaged. OUTLINE OF TOPICS INCLUDED:What Is a Sphere?Characteristics