In this chapter, students will simulate the “life” of a mountain and then think about what traces of each stage of the mountain’s life are present at the end of the simulation. Then they will read about the Burgess Shale and how scientists used the clues in the mountain to date the fossils and determine how marine fossils ended up near the top of a group of mountains. The reading strategy featured here is “finding the meaning of new words.” A materials list, teacher background information, references, assessment, and outcomes are provided. This book selection includes the Table of Contents, Acknowledgments, About the Author, Image Credits, and Index.