In this lesson, students in a class are invited to help report the weather on TV and need to learn about air masses and how they help predict the weather. Key words and concepts covered are air masses, weather, and weather forecasting. Crosscutting concepts explored are patterns, cause and effect, systems and system models, and energy and matter. This book selection includes the Table of Contents, Preface, Catalog of Problems, Acknowledgments, About the Authors, and Index.