Random Debate / Pro-Con Pairer
Pair speakers and pick a side.
Built and maintained by Paul Clark, Redmoon Software · Last checked
The Random Debate / Pro-Con Pairer matches up speakers into pairs and randomly assigns each one a pro or con side. It's built for classrooms, debate clubs, and workshops where you want students to argue positions they didn't choose. By flipping sides at random, debaters get practice defending both viewpoints over the course of a term.
Enter. Add your speakers, one name per line.
0 items
Click Pair and assign sides to see a result.
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Recent results
- No history yet.
How it works
- Enter. Add your speakers, one name per line.
- Pair. Click Pair and assign sides to match speakers and flip pro or con.
- Review. See each match with its PRO and CON speakers; with an odd number, the last match also lists a third speaker.
- Redo. Run it again for new pairs and side assignments.
About the Random Debate / Pro-Con Pairer
It assigns sides as well as opponents
The tool pairs everyone off and then flips a coin within each pair to decide who argues for and who argues against. Both halves are random and independent — being paired with someone tells you nothing about which side you will get.
Assigning the side rather than letting people choose is the pedagogically important part. Arguing a position you did not pick forces you to construct the strongest version of a case you may not hold, which is the actual skill debate teaches. Choosing your own side turns it into an exercise in confirming what you already think — there is a longer piece on why that matters.
Odd numbers make a three
With an odd number of debaters nobody is excluded: the last match gets a third speaker, listed under its PRO and CON with no side assigned. A three does not map onto a two-sided debate, so decide in advance what that person will do — join one side to make it two against one, judge, or keep time are all workable and all better than discovering the problem in front of the class.
Running the round
- Pair the people, then draw the motion separately with the debate topic generator — keeping them independent stops anyone claiming the topic suited their opponent.
- There is no seed and no memory of past pairings, so across a term you will get repeats.
- Give people preparation time after the sides are assigned, not before. Preparing both sides is a different exercise.
- Two students with the same name are indistinguishable to the tool and to the results list.
Frequently asked questions
Are sides random or assigned?
Random — each pair gets a coin-flip for pro versus con, so debaters end up arguing both sides over time.
What if I have an odd number of people?
Nobody is left out: the last match lists a third speaker under its PRO and CON, with no side assigned. Decide how to use them — joining one side, judging, or keeping time all work.
How fair is the matching?
Pairings and side assignments use the browser's Web Crypto API for cryptographically sound, unbiased results.
Do my participant names get stored online?
No. The pairer runs entirely in your browser and works offline, so names are never sent anywhere.
Related randomizers
Further reading
- Why arguing a topic you didn't pick makes you a better debater
Competitive debaters train on assigned topics for a reason: arguing a position you already hold isn't a skill, it's a monologue. Here's the case for random topic assignment, and how to use the categories to build real argumentation skill over time.
- Setting up a full debate round in under a minute
No prep period, no printed topic list, no arguing over who argues whom. Here's how to combine a random debate topic draw with the site's debate pairer to run an entire class period of debates from a cold start.
- Running a multi-round debate tournament without repeat matchups
One debate round is easy to randomize. A tournament of four or five rounds needs a plan so nobody argues the same side twice in a row or faces the same opponent all afternoon. Here's how to sequence rounds with the debate pairer.
- Pair everyone up without landing the same partners again
Partner work falls apart when the same two people keep getting matched. Here's how a random pair generator splits a group into twos, handles the odd person out, and remembers recent pairings so this week's partners steer away from last week's.
- Random debate pairings (and which side you argue) without the bias
Letting students pick their own debate partners and the side they already believe defeats the whole point of debate. Here's why randomizing both the pairing and the pro/con assignment builds better arguers — and how a debate pairer does it fairly.