Day 31
To the Teachers:
Cause and Effect
Students practice identifying cause-and-effect relationships by looking for what happens (the effect) and why it happens (the cause).
Evaluate Evidence
Students practice evaluating evidence by identifying the author’s main idea and examining the evidence the author uses to support that idea.
Introduce the Cause and Effect skill to students. Say: When something happens, it is the effect. The thing that makes it happen is the cause. Model by walking to the light switch and turning off the lights. Ask: What caused the lights to go out? (flipping the switch) What is the effect of flipping the switch? (The lights went out.) Say: Often a writer will use causes and effects to explain a problem or a chain of events. The passage you will read is about wildfires. As you read, look for cause-and-effect relationships in the text. Then remind students of the Determine Important Information strategy (Week 5). Point out that identifying important information helps you find causes and effects. Then have students read the instructions at the top of the page and the passage. When students have finished reading, direct them to complete the skill and strategy practice activities. Review the answers together.
Reading:
western states. Not only do the fires cause immediate damage by killing plants and animals in their path, but they can also have long-term effects that harm the ecosystem.
At the Hanford Reach National Monument in Washington State, different types of wildlife—such as the burrowing owl, the sagebrush vole, and the pygmy rabbit—abound. Visitors to Hanford Reach might also see elk, porcupines, and jack rabbits that live near the free-flowing Columbia River. The area is protected from development, which has helped these species thrive.
Over the last decade, several major wildfires have broken out at Hanford Reach. Thousands of acres have burned. One type of plant that has been severely damaged in the fires is sagebrush. This poses special problems for many of the species living in the park. First, animals such as the sage grouse depend on sagebrush as part of their natural habitat. It can take thirty years for sagebrush to grow large enough to provide shelter for these animals. Second, after the sagebrush burns, an invasive species called cheat grass can grow quickly in its place. Unfortunately, cheat grass burns more easily and at higher temperatures than sagebrush. That means that after sagebrush is destroyed, wildfires can occur more frequently and be even more devastating.
Questions:
SKILL PRACTICE: Read each question. Fill in the bubble next to the correct answer.
1. According to the passage, which is one immediate effect of wildfires?
People stop visiting the area.
Cheat grass grows.
Plants are killed.
Animals must learn to live in new habitats.
2. According to the author, why is it a problem when sagebrush burns in a fire?
Animals move into the area where the sagebrush grew.
Sagebrush can take many years to grow large enough to provide shelter.
Young sagebrush plants grow rapidly and stop other species from growing.
Sagebrush burns hotter and more easily than other grasses.
3. How are species protected at Hanford Reach National Monument?
There are limits on land development there.
Wildfires rarely occur there.
National park workers take care of them.
Cheat grass provides a habitat for them.
4. In the passage, which of the following is not a long-term effect of wildfires in Hanford Reach National Monument?
Animals lose their habitat.
Cheat grass replaces sagebrush.
More destructive wildfires may occur.
People clear forests to help them regrow.
STRATEGY PRACTICE: Write a sentence explaining why sagebrush is such an important plant at Hanford Reach National Monument.
ANSWER KEY:
1.D 2.B 3.A 4.D
Sample sentence: Sagebrush provides shelter for animals and keeps out invasive plant species such as cheat grass.
Cause and Effect
Students practice identifying cause-and-effect relationships by looking for what happens (the effect) and why it happens (the cause).
Evaluate Evidence
Students practice evaluating evidence by identifying the author’s main idea and examining the evidence the author uses to support that idea.
Introduce the Cause and Effect skill to students. Say: When something happens, it is the effect. The thing that makes it happen is the cause. Model by walking to the light switch and turning off the lights. Ask: What caused the lights to go out? (flipping the switch) What is the effect of flipping the switch? (The lights went out.) Say: Often a writer will use causes and effects to explain a problem or a chain of events. The passage you will read is about wildfires. As you read, look for cause-and-effect relationships in the text. Then remind students of the Determine Important Information strategy (Week 5). Point out that identifying important information helps you find causes and effects. Then have students read the instructions at the top of the page and the passage. When students have finished reading, direct them to complete the skill and strategy practice activities. Review the answers together.
Reading:
Wildfires in Washington
Wildfires take place with alarming frequency in the drier areas of the United States, especially in the western states. Not only do the fires cause immediate damage by killing plants and animals in their path, but they can also have long-term effects that harm the ecosystem.
At the Hanford Reach National Monument in Washington State, different types of wildlife—such as the burrowing owl, the sagebrush vole, and the pygmy rabbit—abound. Visitors to Hanford Reach might also see elk, porcupines, and jack rabbits that live near the free-flowing Columbia River. The area is protected from development, which has helped these species thrive.
Over the last decade, several major wildfires have broken out at Hanford Reach. Thousands of acres have burned. One type of plant that has been severely damaged in the fires is sagebrush. This poses special problems for many of the species living in the park. First, animals such as the sage grouse depend on sagebrush as part of their natural habitat. It can take thirty years for sagebrush to grow large enough to provide shelter for these animals. Second, after the sagebrush burns, an invasive species called cheat grass can grow quickly in its place. Unfortunately, cheat grass burns more easily and at higher temperatures than sagebrush. That means that after sagebrush is destroyed, wildfires can occur more frequently and be even more devastating.
Questions:
SKILL PRACTICE: Read each question. Fill in the bubble next to the correct answer.
1. According to the passage, which is one immediate effect of wildfires?
People stop visiting the area.
Cheat grass grows.
Plants are killed.
Animals must learn to live in new habitats.
2. According to the author, why is it a problem when sagebrush burns in a fire?
Animals move into the area where the sagebrush grew.
Sagebrush can take many years to grow large enough to provide shelter.
Young sagebrush plants grow rapidly and stop other species from growing.
Sagebrush burns hotter and more easily than other grasses.
3. How are species protected at Hanford Reach National Monument?
There are limits on land development there.
Wildfires rarely occur there.
National park workers take care of them.
Cheat grass provides a habitat for them.
4. In the passage, which of the following is not a long-term effect of wildfires in Hanford Reach National Monument?
Animals lose their habitat.
Cheat grass replaces sagebrush.
More destructive wildfires may occur.
People clear forests to help them regrow.
STRATEGY PRACTICE: Write a sentence explaining why sagebrush is such an important plant at Hanford Reach National Monument.
ANSWER KEY:
1.D 2.B 3.A 4.D
Sample sentence: Sagebrush provides shelter for animals and keeps out invasive plant species such as cheat grass.
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