30 Minute Timer
Thirty minutes for longer work periods, quizzes and indoor recess.
Activity
Time
Station rotations
4 × 30 minutes, 60s to switch · 30 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 30 minute timer is good for in class
- A long work period on a project.
- A quiz or unit check.
- Indoor recess or free choice time, so everyone knows when it ends.
Running one of these every day? See the test timer and quiet timer for set-up tips.
How the 30 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 30:00 down to 15:00 | More than half the time left |
| Yellow | From 15:00 down to 6:00 | Less than half left |
| Red | The last 6 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 30 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 30 minutes of work, with 2 minute breaks added between parts:
| Parts | Each | Breaks | Total |
|---|---|---|---|
| 2 | 15 min | 2 min | 32:00 |
| 3 | 10 min | 4 min | 34:00 |
| 4 | 7 min | 6 min | 34:00 |
Questions teachers ask
When does the 30 minute timer turn yellow and red?
Yellow with 15:00 left and red with 6:00 left. The warning chime plays once at 1:00.
How do I start a 30 minute timer?
This page is already set to 30:00. 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.
What sounds does the 30 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.