
Ask a fourth grader to write a persuasive essay and you often get a rant, a list of feelings, or a blank page. Many kids have opinions. They often do not yet have a container for them.
A claim is the one-sentence point they want someone to agree with. Reasons are why. Evidence is a concrete example they can point to, a photo, a quote from a sibling, a time of day. Persuasive writing tries to move a real person, not fill a worksheet.
The What Works Clearinghouse practice guide on elementary writing, led by Steve Graham and colleagues, puts strategy instruction at the center: teach a clear process for planning, drafting, and revising, and give kids a purpose that is not "because the worksheet said so." [1]
Quick takeaways
OREO is a classroom acronym for opinion, reason, example, opinion restated. Many families use it as a scaffold. It works when you treat it as a helper, not a five-sentence prison.
When that four-part frame feels easy, add two upgrades most worksheets skip: what someone might say against it, then a short reply, and an ask (what you want the reader to do). Graham's guide stresses teaching the writing process as a set of strategies kids can name, not as a mystery of talent. [1]
If handwriting or motor load is the real fight, you can scribe the first plan while they talk. Many neurodiverse kids, and kids with writing anxiety, freeze when thinking and handwriting have to happen at the same time. The spoken argument still counts. They can copy it later, or type it.
School prompts like "should kids have homework" often go stale. Try something they already care about:
If they care, they will hunt for examples. That is research, not a separate subject.
For kids who refuse the page, keep the first draft to half a page. See how to teach writing to a reluctant writer and writing prompts when you need a spark, not a five-paragraph demand. Graphic organizers can hold the claim and reasons before sentences show up: graphic organizers for kids.

Day 1, talk: they pick the claim. You write it on a sticky note. They tell you two reasons out loud while you type or scribble.
Day 2, evidence: they add one example per reason. A photo, a quote from a sibling, a time of day. Skip the internet rabbit hole.
Day 3, draft: they write from the sticky notes. You do not line-edit yet.
Day 4, one revision pass: add the counterargument, or swap a vague word ("fun") for a specific one ("we finished the walk before it got dark").
Live classes often help when they will only revise for a teacher who is not you. Browse creative writing classes and language arts. Public speaking classes can be the oral version of the same skill: public speaking.
Opinion writing states a preference. Persuasive writing tries to move someone. Start with opinion. Add the ask and the counterargument when they are ready.
If a tool writes the draft, they skipped the thinking. Use tools to check spelling after they have a human draft.
Kindergarteners and first graders can use pictures and spoken sentences. You write the claim they said. Second and third graders can often fill an OREO with phrases. Full paragraphs can wait.
[1] Graham, S., Bollinger, A., Booth Olson, C., D'Aoust, C., MacArthur, C., McCutchen, D., & Olinghouse, N. (2012). Teaching elementary school students to be effective writers (NCEE 2012-4058). Institute of Education Sciences, What Works Clearinghouse. https://ies.ed.gov/ncee/wwc/Docs/practiceguide/writing_pg_062612.pdf
If your kid has the opinion and needs a teacher to help them put it on the page, browse live writing classes on Outschool.