In this lesson, students explore the concept of the four seasons and how the changing seasons affect plant development. They will begin to understand that seasonal changes are caused by Earth’s tilt as it rotates around the Sun. Students focus on seasonal changes in trees and investigate the changes in one kind of tree that grows in their home region. A materials list, teacher background information, safety practices, Internet resources, and outcomes are provided. This book selection includes the Table of Contents, About the Editors and Authors, Acknowledgments, and Index.