In this lesson, students consider the various types of environmental changes that occur over time and participate in a class investigation of the causes and effects of erosion. They also begin to consider ways in which environmental changes can be tracked and measured over time. Students track weather on a daily basis to make connections between weather and environmental change and begin a class recycling program. They consider the differences between fiction and nonfiction literature and create a piece of fictional writing in addition to the nonfiction text they include in their STEM Research Notebooks. A materials list, safety notes, standards, teacher background information, assessment, and Internet resources are provided. This book selection also includes the Table of Contents, About the Editors and Authors, Acknowledgments, Appendix A, B, and C, and Index.