Independent work
Give students one clear task, start together, and reserve the final minute for checking or submission.
For lessons and transitions
15 Minute Classroom Timer
Run a visible quarter-hour activity with simple controls, optional alarms, and fullscreen mode.
Ready
Keyboard: Space starts or pauses, R resets, F enters fullscreen.
Ready-to-use ideas
Ways to use 15 minutes in class
Group rotation
Use the completion screen as the cue to pack away and move to the next station.
Presentation practice
Split the block between rehearsal, peer feedback, and one improved final run.
Teacher questions
Classroom timer FAQ
Can I make the classroom timer silent?
Yes. Choose No sound before starting. The visual countdown and completion screen will still work.
Can students see it from across the room?
Use Fullscreen to enlarge the stable high-contrast timer and remove surrounding page content.
Does it require a teacher account?
No. The timer runs immediately in the browser with no registration.