Persuasive writing is one of my favorite writing units. My students get so excited about expressing their opinions. After we solve smaller problems at our school, we choose a larger world problem to try to help. Opinion writing for a cause shows my students just how powerful their words can be.

Starting Small
When I first introduce my students to opinion writing, we start small. Each student chooses a problem at school. They use their own personal experiences to persuade their classmates, the principal, or me to agree with them.
Some of my students’ favorite topics are:
- School lunches
- Chromebook free time
- Lunch room behavior
- Recess activities
We use this first writing piece to learn about writing strong thesis statements, developing our reasons, and adding supporting details.
Researching for Debates
Next, we learn about researching to add facts to our opinion writing. I start by taking a poll to see how my students feel about zoos. My class is usually pretty evenly divided. About half of them think zoos are good and the other half think animals should be free in the wild. I assign articles in Google Classroom that support their side of the debate.
As the students read the articles, they write down facts that support their opinion. Once they’ve gathered quotes, statistics, and facts, they meet with the other students who agree with their opinion. They go through their notes and write the facts on post-its.
Finally, we have a whole class debate. The students take turns reading the facts on their post-its and stick them on the board. It goes back and forth from one side to the other until one side runs out of post-its. This debate gets my students so excited about persuasive writing.

After our whole class debate, I pair my students to do smaller debates. One pair of students researches one side of an issue, and another pair of students researches the other side. They write 5 paragraph debate speeches and share them with the class. The rest of the class votes on which side was more persuasive.
The issues we debate are:
- Should phones be allowed in school?
- Should boys and girls go to different schools?
- Are video games good for you?
- Should we have more gym time?
- Are online schools a good idea?
- Should there be homework?
Third graders have very strong opinions on all of these issues. I’m always impressed with how well they use the facts and their personal experiences to support their thesis statements.
I love the Persuasion Map on the Read, Write, Think website. My students use it to plan their persuasive writing.
Opinion Writing for a Cause
**This post contains affiliate links and I will be compensated if you make a purchase after clicking on my links. I only recommend products that I use and love.
The last part of my opinion writing unit is writing for a cause. I want my students to realize that they can really make a difference through their writing. A few years ago, we researched manatees, and my students wrote letters to their families asking them to donate a dollar. We used the money to adopt a manatee. My students loved getting updates on our manatee and knowing that they helped these amazing creatures.
Last year, my third grade team decided to work together for a bigger cause. We read the book Beatrice’s Goat. It is about a girl named Beatrice who lives in Africa. Her family is poor and can’t afford to send her to school. The organization Heifer International gives Beatrice’s family a goat. By selling the goat’s milk and babies, Beatrice earns enough money to go to school.
After reading about Beatrice, we research Heifer International and their mission. The students take notes and use them to write letters to their parents about why they should donate a dollar to Heifer International.
My team sets up a donation page on the Heifer International website. Parents can donate online or send in donations that we mail. Last year, we raised over $950, and another company doubled it. The total donation was over $1900. Our students were so excited to make such a big difference by donating water buffalo, goats, chickens, and other animals to families in need.
This project is the perfect way to wrap up the unit on persuasive writing. Our students learn that opinion writing for a cause is a great way to make a difference in the world.
If you would like to try this with your class, you can download my Heifer International research guide at the bottom of this post.
You’re Invited!
Looking for ways to differentiate your lessons and meet the needs of all your students without adding more to your plate?
Join The Differentiation Conversation Community, a free community for elementary teachers where we share practical differentiation strategies, ready-to-use resources, and encouragement to help you meet the needs of all your learners.
What Do You Think?
What fun writing pieces do you do for opinion writing?
Let me know in the comments below.
If you enjoyed this post and think your teacher friends will, too, please click the button to share it on your favorite social media platform.

Yes! I taught third grade and we had so much fun with debates and writing persuasively. Persuasive writing is something that kids do naturally well. Being a mom of 7 year old, he uses his persuasive skills to negotiate and to reason quite often. Sometimes it really works. LOL! My students were pretty good at writing for a cause or for something they really wanted. I saved Scholastic News which always had a great question for debate. I posted that question on my morning message white board every day throughout this unit and the kids would write a reason to support either side on a post it note. It led into a great discussion and to my writer’s workshop mini lesson that day. Thanks for sharing your great lesson ideas too!
I love the idea of using the debates in Scholastic News. That’s a great way to get your students thinking about persuasive writing from the moment they enter the room. I’m going to have to try that next year.
All great ideas! I saw an idea the other day very similar to this where the teacher had them start by “complaining”. They then moved on to supporting their “complaint” with facts, and using facts to argue their case. It seemed like a very engaging process to take the students through. Thanks so much for sharing this!
Haha, my third graders have lots of complaints. No one had any trouble finding a problem at our school. Luckily, they were equally able to think of solutions!
I love the graphic organizers on readwritethink, too! These are all great ideas for getting students to express their opinions.
Thanks, Amy! You’re right – all of their graphic organizers are amazing.