Threats to Our Atmosphere
Informational (nonfiction), 1,831 words, Level W (Grade 4)

Lesson Objectives

Reading Strategy	Ask and answer questions
Comprehension	Author's Purpose
Grammar and Mechanics	Compound Predicates
Word Work	Content Vocabulary

Book Summary

Threats to Our Atmosphere is an informational book that focuses on the structure and function of Earth's protective atmosphere. The text explains the ozone layer and the possible causes and consequences of global warming. The book also explores what effects these issues have on our planet, what scientists and world leaders are doing to protect our environment, and what individuals can do to protect our sky. Photographs, diagrams, and charts support the text.

About the Lesson

Targeted Reading Strategy

• Ask and answer questions

Objectives

• Use the reading strategy of asking and answering questions to understand informational text
• Identify author’s purpose
• Identify and understand compound predicates
• Recognize and use content vocabulary

Vocabulary

• Content words: atmosphere, atoms, chemicals, constant, contributor, decomposes, fossil fuels, global warming, greenhouse effect, molecules, pollutants, precipitation, ultraviolet

Book Resources

Formats Single-Sided Color Book Double-Sided Color Book Lesson Resources Lesson Plan Worksheets Discussion Cards Comprehension Quiz Level W Answer Sheet