17 Minute Timer
Seventeen minutes for labs and longer group tasks.
Activity
Time
Station rotations
4 × 17 minutes, 60s to switch · 17 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 17 minute timer is good for in class
- A lab step with set-up and clean-up built in.
- Group problem solving with a share-out at the end.
- A practice section of a test with a little buffer time.
Running one of these every day? See the test timer and clean up timer for set-up tips.
How the 17 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 17:00 down to 8:30 | More than half the time left |
| Yellow | From 8:30 down to 3:24 | Less than half left |
| Red | The last 3 minutes 24 seconds | 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).
Running 17 minute stations
With Station rotations on, each station gets 17 minutes and the timer runs every rotation from one Start. Totals with a 1 minute switch between stations:
| Stations | Work | Switching | Total |
|---|---|---|---|
| 3 | 51 min | 2 min | 53:00 |
| 4 | 1 h 8 min | 3 min | 1:11:00 |
| 5 | 1 h 25 min | 4 min | 1:29:00 |
Questions teachers ask
Does the screen stay on during a long timer?
On browsers that support it, the page asks the device to keep the screen awake while the timer runs, so the projector doesn't go to sleep halfway through.
How do I start a 17 minute timer?
This page is already set to 17:00. 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 17 minute timer turn yellow and red?
It turns yellow with 8:30 left and red with 3:24 left. You can turn colour changes off so the disc stays green.
What sounds does the 17 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.