Critical Thinking

• 1. SUM IT UP Make a Proposition-Support Diagram with the writer’s ideas about light pollution. Use the diagram to summarize the selection with a partner.

  

  Proposition-Support Diagram

• 2. Analyze Look again at your Anticipation Guide about the environment from page 468. Evaluate your answers. Discuss your thinking with a group.

• 3. Synthesize How is the problem of wasted light connected to animals?

• 4. Compare Compare the author’s purpose for the two texts. Which text is more persuasive? Explain.

Reading Fluency

Intonation Read the passage on page 588 to a partner. Assess your fluency.

• 1. I read

  • a. great

  • b. OK

  • c. not very well

• 2. What I did best in my reading was ______.

Reading Strategy

Vocabulary Review

Oral Review Read the paragraph aloud. Add the vocabulary words.

I found a sick bird. When it got better, I ______ it into the air. That night, I saw a program on TV about light ______. I learned how unused, or ______, light not only harms the ______, but also confuses birds. As birds ______, they use the stars to guide them. Artificial lights can cause them to go the wrong way. I want to help and ______ birds, so I wrote a letter to the mayor. I said that the city should find out if it shines too much light at night. If it does, it should ______ the glow. I explained why this would be a big ______ to the birds in our area.

Written Review Imagine that your city passed laws against wasted light. What would the sky look like? Write a description. Use four vocabulary words.

Write About the Guiding Question

Explore the Power of the Stars

Is lighting up the night sky worth the benefit to humans, or is it too harmful to the environment? Write a persuasive paragraph to explain what you think. Use examples from the text.