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Identifying Central Idea and Supporting Details

This worksheet helps grade 9 students identify the central idea and supporting details in informational texts, enhancing their reading comprehension skills.

Grade 9 ELA ReadingReading Comprehension StrategiesCentral Idea and Supporting Details
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Standards

CCSS.ELA-LITERACY.RI.9-10.2

Topics

ELAReading ComprehensionCentral IdeaSupporting DetailsGrade 9
7 sections · Free to use · Printable
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Identifying Central Idea and Supporting Details

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Read each passage carefully. For each passage, identify the central idea and the supporting details. Use complete sentences for your responses.

The widespread adoption of renewable energy sources is crucial for mitigating the effects of climate change. Solar power, for instance, harnesses the sun's energy through photovoltaic panels, offering a clean alternative to fossil fuels. Wind turbines convert kinetic energy from the wind into electricity, providing another sustainable option. Geothermal energy, derived from the Earth's internal heat, can also be used for both electricity generation and direct heating. These renewable technologies not only reduce greenhouse gas emissions but also decrease our reliance on finite resources, leading to greater energy independence and environmental sustainability.

1. What is the central idea of the passage?

2. Identify three supporting details from the passage that reinforce the central idea.

The human brain is an incredibly complex organ, responsible for everything from basic bodily functions to abstract thought. It is composed of billions of neurons that communicate through electrochemical signals, forming intricate networks. Different regions of the brain are specialized for various tasks: the frontal lobe handles planning and decision-making, while the occipital lobe processes visual information. Memory formation, emotional responses, and motor control are all regulated by distinct yet interconnected parts of this remarkable organ. Understanding the brain's structure and function is central to unlocking the mysteries of human consciousness and behavior.

3. What is the central idea of the passage?

4. List three supporting details that explain the complexity and functions of the human brain.

5. Which of the following best describes the role of supporting details in a text?

a

To introduce a new topic.

b

To provide evidence and elaborate on the central idea.

c

To conclude the passage.

d

To ask a rhetorical question.

6. Why is it important to distinguish between the central idea and supporting details when reading a text?

7. The   is the main point or message of a text, while the   provide evidence, examples, and explanations to back it up.