To differentiate a math game like tug of war, give each team its own level so both can win while working at the right difficulty. Set the two levels at the top of this page, and use this table as a starting point.
Your groups | Team A | Team B |
|---|---|---|
Small gap in confidence | Medium (up to 12) | Easy (up to 10) |
Clear gap | Hard (up to 20) | Easy (up to 10) |
Adult against a beginner | Master (up to 100) | Starter (up to 5) |
Every correct answer pulls the same distance at any level. Play one match, and if the rope runs straight to one end, raise the winner's level or lower the other's.
Why levels matter so much
In our simulation of the game's rules, two equally accurate players answering every 3 and 2.5 seconds finished 10% to 88%. That is a model and not data from real players, but it shows why small speed gaps need correcting. The aim is for both teams to answer at about the same speed, which is what makes a match close.
How should you group players?
Mix confidence inside each team rather than ranking pairs. Cooperative formats do best in research when structure is built in, so assign roles: reader, answerer, checker and coach. Tell players that each team has a different question set, and avoid labelling either as easier.
What if a player needs longer?
Use a 2 or 3-minute match and let pairs answer together. Provide a multiplication grid during early matches, then take it away. Players with slower processing or motor needs can use a keyboard or a partner, or play the untimed dice version.
Stretch for players who finish quickly
Ask them to explain a strategy for a missed fact, or to write a question set of their own on the custom questions page.
Language learners
The questions are numeric, which helps. Teach the words used in the rules before the match, and allow players to explain strategies with drawings.
When should you avoid a match?
If differentiating would single someone out, or a player dislikes public speed, use a private tablet match or the dice version. Online rooms have one level for everyone, so use one screen for mixed levels.
A simple way to measure a fair level
- Have each player or team play one 60-second match against the Gentle robot on a chosen level.
- Count the correct answers on the score.
- Move a team up a level if it scored far more than the other, or down if it is well behind.
- Play a head-to-head and watch the rope.
Compare scores only to set levels, and do not share them with the class.
A worked example with one class
| Group | Working on | Setting | Support |
|---|---|---|---|
| A | 2s, 5s and 10s | Tables ticked, Easy | Tables grid for the first match |
| B | 3s, 4s and 8s | Tables ticked, Medium | Partner checks answers |
| C | All tables to 12 | Nothing ticked, Medium | Explains a strategy afterwards |
Each pairing can run on its own screen. On one screen, only two teams and two levels can play at a time, so rotate pairings or split groups across devices.
Avoiding labels
Call levels by the numbers they cover rather than "the easy group". Change who works together from week to week, and let any team choose to try a higher level. If players start comparing levels, return to team formats, where each team contains a mix of confidence.
Frequently asked questions
Can two teams play at different levels?
Yes. On one screen, each team can have its own level from Starter (up to 5) to Master (up to 100).
Does a correct answer count the same at every level?
Yes. Each correct answer pulls the rope the same distance, whatever level the team is on.
Do online rooms have separate team levels?
Not yet. Everyone in an online room plays at the level the host chooses.