Nine Boxes: The Whiteboard Grid Game That Runs Itself in a Korean Hagwon
Nine Boxes is a no-prep whiteboard game where students pick a numbered box, answer a question tied to that number, and try to claim three in a row. It scales from single-word answers to full sentences with nothing more than a marker and a grid.
Park English2026-09-043 min read
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Every hagwon teacher has had that Tuesday. Book's finished with fifteen minutes left, photocopier's out of toner, and the kids can smell that class is basically over. Nine Boxes exists for that fifteen minutes. It needs a whiteboard, a marker, and whatever's already in your head from the lesson.
Draw a 3x3 grid. Number the boxes 1 through 9. That's the entire prep.
How it runs
- Split the class into two teams. In a class of 13, that's six and seven — uneven teams are fine, this isn't a fairness competition.
- A student from Team A calls a number. You ask a question tied to that number — vocabulary, a grammar transformation, a comprScorehension check, whatever the lesson was actually about.
- If they answer correctly, you write their team letter in that box. If they miss it, the box stays open and play passes to Team B.
- Teams try to get three boxes in a row — horizontal, vertical, or diagonal — like tic-tac-toe.
- First team to a line wins the round. Wipe the board, draw a new grid, go again.
That's it. We've watched teachers run this in a Gangnam-district elementary class using nothing but past-tense verbs, and run the exact same grid in an adult conversation class using "describe a time you..." prompts. The mechanic doesn't care what's inside it.
Scaling by level
| Level | What goes in the boxes |
|---|---|
| Beginner / elementary | Single word answers — "What's the past tense of go?" |
| Intermediate / middle school | Fill-in-the-blank or short sentence transformation |
| Advanced / high school & adult | Open questions requiring 2-3 sentence answers, judged by the class |
For lower levels, keep questions short and rapid — you want the round to end in under three minutes or attention drifts. For advanced classes, let the questions get genuinely hard, and let the class vote on whether an answer counts. That vote is often more useful than the question itself, because arguing about why an answer is wrong is real language production.
One thing to admit: the game slightly rewards teams with one strong student who dominates the calling order. We fix this by requiring the team to rotate who answers — no repeat answerer until everyone's gone once. It's a small rule and it matters more than it sounds like it should.
Where it actually helps
So beyond killing time, Nine Boxes is a decent informal check of what stuck from the lesson, because you're picking the questions in real time based on what you just taught. It also works as a five-minute warm-up to recall last class's material before starting something new — we've had teachers run it in the first five minutes of a Monday class covering Friday's vocabulary, and it surfaces who forgot over the weekend faster than cold-calling does.
It does not work well with classes under six students. The grid needs enough bodies that "whose turn is it" stays interesting. Below that, just ask questions round-robin.