In class
- Press F for fullscreen on the projector, or use Focus view.
- Hide the numbers for younger students; the shrinking disc is enough.
- Pick a color, then use + to add time without stopping the activity.
- A gentle chime and color change mark the end; there is no alarm.
Sharing with students
Create a room to show the same timer on student devices. Anyone with the link can control the timer, so only share it where that is fine.