How to use the classroom timer
- Choose Countdown or Stopwatch.
- Pick a preset — 1, 2, 3, 5, 10 or 15 minutes — and add or take away a minute at a time.
- Press Start, or the Space bar. Space stops it again and R resets it.
- When a countdown reaches zero the card flashes and a bell rings; the card keeps flashing until you reset it.
What it does
- Countdown and stopwatch
- Presets of 1, 2, 3, 5, 10 and 15 minutes, adjustable a minute at a time
- Digits sized to be read from the back of a classroom
- The last ten seconds turn the card red; a bell at zero, which you can mute
- Keeps exact time even when you switch to another tab
- Keyboard control: Space starts and stops, R resets
Questions
Does the timer keep going if I switch tabs?
Yes. It measures time against the clock rather than counting ticks, so it stays exact while you show the lesson in another tab.
Can I turn the sound off?
Yes — press the bell button to mute it. The card still flashes when time is up.
Is it free?
Yes — free, with no account and nothing to install.
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