Module 1: Introduction—The Nature of Science 
Module 2: System Interactions—Properties of Water 
Module 3: System Interactions—Weathering and Erosion 
Module 4: System Interactions—Ocean Processes 
Module 5: System Interactions—Earth's Atmosphere 
Module 6: System Interactions—Climate and Weather 
Module 7: System Interactions—The Carbon Cycle 
Module 8: System Interactions—History of Earth's Climate 
Module 9: Stability and Change—Feedback Loops 
Module 10: Stability and Change—Future Predictions 
Module 11: Stability and Change—Natural Resources 
Module 12: Stability and Change—Human Impact 
Module 13: Stability and Change—Sustainability 
Module 14: Stability and Change—Pollution 
Module 15: Stability and Change—Environmental Problems