Main Topic & Key Details
Identify the main topic of a multi-paragraph informational text, determine the focus of specific paragraphs, and explain how key details support the main idea
What a learner can do afterwards
- Identify the main topic of a multi-paragraph informational text and state the focus of individual paragraphs
- Describe how specific details and facts in the text support the main idea
- Explain how events, ideas, or steps in a text are connected (e.g. cause-effect, sequence, comparison)
1 · Read
You can find what a short text is mostly about. A longer article has paragraphs, or groups of sentences. Each paragraph does its own job. Ask what each part is about. Then look for a main idea that joins the parts. An article can have more than one main idea. Here, we practise finding one idea that fits the parts.
An article called 'How a Sunflower Grows' has four paragraphs: a seed, a shoot, a young plant, and a plant with flowers. Together they explain how the plant grows. Reading just the young-plant paragraph would leave out the earlier and later steps. Read each part to understand the whole process.
Key details help explain a main idea. Check each detail: does it help show that idea? Count only the ones that do. A panda gripping branches supports an idea about climbing. Eating bamboo does not. Read every sentence, since helpful details can come anywhere. To find an idea, ask what the helpful details share.
First and next show order. A comparison shows how things are alike or different. Because and so can show cause and effect: one event makes another happen. A text may leave those words out. 'A cup tipped over. Water spilled onto the table.' The cup tipping caused the spill. Order alone is not enough: check that one event explains the other.
Read all the details. What idea do most of them explain? Use that idea when choosing a title or adding a detail. One fun fact may be too small to cover the text. A title about everything may promise too much. A fact can be true yet not help this idea. The main idea can come first, last, or be left for you to work out.
Find each paragraph's job. Join the ideas, and check which details help explain them.
More to read
Identifying main ideas | Guided practice
What is a main idea?
A main idea is the big idea an author wants to teach you about a topic. It is what a text is mostly about. Many texts have one main idea. Some have two or more.
Authors use key details to support their main ideas. Key details are the smaller facts that help explain the main idea or show why it is true.
Finding the main idea helps you focus on the most important parts of what you read.
How can you find the main idea?
Step 1: Find the topic. The topic is what the text is about. You can usually say it in one or two words, like whales or volcanoes.
Step 2: Ask, what does the author mostly tell me about the topic? That answer is the main idea.
Step 3: Look for key details. Each paragraph usually has its own small focus, and the details in it point back to the big idea. If a detail helps explain the main idea, it is a key detail.
Try it! Read a short text. Say the topic in one or two words. Then say the main idea in one full sentence. Last, point to two details that help prove it.
Identifying the main idea of a text | Guided practice
What is the main idea?
The main idea is the big idea an author wants to explain about a topic. It is what a text is mostly about. Finding the main idea helps you focus on the most important parts of what you read.
How can you find the main idea in a text?
Step 1: Find the topic. A topic is usually one or two words, like puppies or outer space.
Step 2: Figure out what the text tells you about the topic. Ask yourself, what does the author want me to know about this topic?
Step 3: Check your answer. Look at the details in the text. Do most of them talk about your main idea? Then you probably found it.
Remember, the topic is just a word or two. The main idea is a full thought about the topic. For example, the topic might be bees. The main idea might be: bees help flowers grow by moving pollen.
When you read each paragraph, ask what that paragraph is mostly about. Put those small ideas together, and you will find the main idea of the whole text.
Reading strategy: Summarize as you read
What is the strategy?
As you read, stop now and then to summarize. A summary is when you say the main ideas and most important details in your own words.
If you have trouble finding the main ideas, try asking the 5 W questions plus H: who, what, when, where, why, and how. The answers point you to what matters most.
How often should you stop? For a short text, you might summarize every paragraph. For a longer text, you might summarize a few paragraphs at a time. Do what works best for you.
You can summarize in your head. But writing one short sentence for each paragraph helps even more. That sentence is the paragraph's focus.
Why does this work? Summarizing makes you think about what the author really wants you to learn. When you can say the main idea of each paragraph, you can also see how the paragraphs connect, like steps in order or a cause and its effect. Then the main idea of the whole text becomes clear.
2 · Watch
En anglaisTake it off screen
Where it sits
Where this leads
23 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.