35 Minute Timer
Thirty-five minutes for tests and long work sessions.
Activity
Time
Station rotations
4 × 35 minutes, 60s to switch · 35 minutes total
Press Show to class for the board or projector. The disc shrinks and turns yellow, then red. Space starts and pauses. The screen stays awake while the timer runs.
Time's up!
Great work, everyone.
What a 35 minute timer is good for in class
- A test section in a 45-minute class, leaving time for directions and collection.
- A science lab from start to clean-up.
- An art project session.
Running one of these every day? See the test timer and clean up timer for set-up tips.
How the 35 minute timer looks on the board
The disc starts full and shrinks clockwise. Its colour tells the class how much time is left, even from the back of the room:
| Disc | Clock shows | Meaning |
|---|---|---|
| Green | From 35:00 down to 17:30 | More than half the time left |
| Yellow | From 17:30 down to 7:00 | Less than half left |
| Red | The last 7 minutes | Final 20 percent |
Sounds
- A soft two-note warning chime at 1:00 left (you can turn it off).
- Three short blips at 0:03, 0:02 and 0:01.
- A rising end chime, “Time's up!” on the board and a burst of confetti (skipped if your device is set to reduce motion).
Splitting 35 minutes into parts
For a long session, Station rotations can split the time into parts with a short break between them. Some ways to divide 35 minutes of work, with 2 minute breaks added between parts:
| Parts | Each | Breaks | Total |
|---|---|---|---|
| 2 | 17 min | 2 min | 36:00 |
| 3 | 11 min | 4 min | 37:00 |
| 4 | 8 min | 6 min | 38:00 |
Questions teachers ask
Can I leave the timer running while I use another tab?
Yes. The time is calculated from the clock, so it stays correct in a background tab, and the end chime plays when time is up.
How do I start a 35 minute timer?
This page is already set to 35:00. Press Start or the space bar. To put it on the board, press Show to class: the controls disappear and the timer fills the screen. Tap the screen to pause, press Esc to exit.
When does the 35 minute timer turn yellow and red?
It turns yellow with 17:30 left and red with 7:00 left. You can turn colour changes off so the disc stays green.
What sounds does the 35 minute timer make?
A warning chime at 1:00 left, then 3-2-1 blips and an end chime. Sound only starts after you press a button, and the speaker button mutes everything.