How to Write a Paragraph
Imagine you tell a friend, 'I got a dog, it rained yesterday, my favorite color is blue, and dogs need walks.' It's confusing, right? Ideas jumbled together like that are hard to follow. A good paragraph is like a mini team of sentences that all work on the SAME job — proving or explaining ONE main idea.
What You'll Learn
- The three jobs every paragraph needs to do: topic sentence, supporting details, closing sentence - How to write a strong topic sentence that states one clear idea - How to pick supporting details that actually connect to that idea - How to fix a paragraph that has gone off-topic
The Three-Part Paragraph
Every solid paragraph has three jobs: 1. TOPIC SENTENCE: This is the first sentence. It tells the reader the ONE main idea the whole paragraph will be about. Example: 'Owning a dog teaches kids real responsibility.' 2. SUPPORTING DETAILS: These are 2-4 sentences that back up the topic sentence with specific facts, examples, or reasons. Example: 'Dogs need to be fed twice a day, walked every morning, and taken to the vet for checkups.' 3. CLOSING SENTENCE: This wraps up the paragraph, often by restating the main idea in a new way. Example: 'Caring for a dog every day builds habits that help kids in many parts of life.'
Spotting an Off-Topic Sentence
Here's a paragraph with one sentence that doesn't belong: 'Owning a dog teaches kids real responsibility. Dogs need to be fed twice a day and walked every morning. My favorite color is blue. Caring for a dog builds habits that help in other parts of life.' The sentence about favorite color has nothing to do with responsibility or dog care — it breaks the paragraph's one-job rule. A strong writer reads back through their own paragraph and asks: 'Does this sentence help prove my topic sentence?' If the answer is no, that sentence needs to be cut or moved to a different paragraph.
Hold up one hand. Your thumb is the topic sentence. Your three middle fingers are three supporting details. Your pinky is the closing sentence. If you can tap through all five, you likely have a complete paragraph.
What is the main job of a topic sentence?
In this paragraph — 'Recess is important for students. Kids get to run and use energy. Recess also gives brains a break from schoolwork. My little brother lost a tooth yesterday. Recess helps kids focus better once class starts again.' — which sentence does NOT belong?
Write and Fix a Paragraph
Write a 4-5 sentence paragraph about your favorite hobby, including a topic sentence, 2-3 supporting details, and a closing sentence. Then, on purpose, add ONE off-topic sentence that doesn't belong anywhere in the middle. Trade your paragraph with a partner (or a family member) and have them circle the sentence that doesn't fit. Turn in both your original paragraph and the marked-up version.
Want to keep learning?
Sign up for free to access the full curriculum — all subjects, all ages.
Start Learning Free