The guiding question in this activity is,“How do fossils form?” Fossils are remains and traces of plants and animals that lived long ago. In this activity, a sandbox is set up for students to dig for dinosaur “fossils” to create a cast “fossil” of the dinosaur in plaster. Students will also learn about cast, mold, and trace. Before beginning this activity, we recommend you read Chapters 9 and 11 which are in this book selection. Chapter 9 is an overview of the section and introduces the format used to present ideas for Family Science Night activities. Chapter 11 features activities that we believe to be at an intermediate level. A materials list, references, safety notes, standards, and teacher background information are provided. This book selection also includes the Table of Contents, Preface, Acknowledgments, About the Authors, Introduction, and Index..