How it works
Practice on your own, then race the class
OpenMath has two halves: short quizzes you take by yourself, and live games where a whole class answers the same questions at the same moment. Here is the whole thing, step by step.
First you need an invitation
There is no public sign-up. You register with a code from somebody who already has an account, using exactly the email address the code was made for. No email is sent — the person inviting you hands you the link themselves.
How to get in →🎯 On your own
A quiz takes a few minutes
This is the everyday loop — the one a child runs before dinner, four questions or thirty.
- 1 🎯
Pick a quiz
Six topic groups: arithmetic, multiplication and division, counting patterns, Roman numerals, measurement and fractions. Then a difficulty — easy, medium or hard — and how many questions you want, anywhere from 1 to 30. You only see quiz types that fit your age, and multiplication sticks to the times tables you have told the app you know.
- 2 ⏱️
Answer one question at a time
Every question is generated fresh, so you never replay a fixed list. Type your answer and move on. The clock is running the whole time.
- 3 ✅
See straight away whether you got it
Right or wrong shows immediately, together with the correct answer — so every question teaches something. Badges pop up the moment you earn them.
- 4 🏅
Finish with a score and a time
At the end you get your percentage correct and how long it took. The whole quiz lands in your history, where you can reopen it question by question — or export it as a PDF.
Interrupted? Pick it up later
If a quiz gets closed half-way — the bell rings, the tablet dies — it stays in the history and can be resumed. The app remembers which questions were already answered.
🎮 Multiplayer
The whole class, the same questions, at the same time
Anyone with an account can host a game — a teacher with a class, or a kid with three friends. The host sets it up and runs it; everyone else plays.
- 1
Set the game up
The host picks the quiz type, the difficulty and the number of questions, then sets the time penalty for a wrong answer — 5, 10 or 20 seconds — and the smallest and largest number of players.
- 2
Share the code
Every game gets a short code, something like MATH-A7X. Players type it in to join. Nothing to install, nothing to hand out on paper.
- 3
Gather in the lobby
Everyone who joins can chat and flips a ready switch. The host does not play — the host runs the game — and can start once everybody is ready and there are enough players.
- 4
10, 9, 8…
A countdown from ten, then the first question. Everyone gets the same questions in the same order, so it is a fair race — nobody wins by drawing the easier ones.
- 5
A wrong answer costs time, not a retry
There is no second attempt. The penalty seconds are added to your total time instead, so rushing has a price and so does hesitating. Speed and accuracy both count.
- 6
The host watches it live
While the game runs, the host sees a live board: every player, every question, right or wrong as it happens. You can spot who is stuck long before the game ends.
- 7
Podium, then the full picture
The top three take the podium, and a full scoreboard follows with every player’s time and the penalty seconds they picked up. Ranking is simple: most correct answers first, and if two players are level, the lower total time — penalties included — wins.
A tablet drops out? Thirty seconds to come back
School wifi is school wifi. If a device loses the connection mid-game, that player has 30 seconds to return: the app reconnects on its own and puts them back exactly where they were. Miss the window and the remaining questions are forfeited — the game does not stall for everybody else.
Every game is kept
Finished games go into a history you can reopen later: who played, what they answered, how the round ended. Useful the next morning, when somebody wants a rematch.
Lobby → ready check → countdown → live board → podium
Try a quiz now
Math is checkable: the app grades every answer on the spot, so see for yourself.
Open the app →