Visual vs digital timers — what research actually says

The research question

Does the format of a timer matter? Is a shrinking pie slice more effective than a number counting down? Several studies have examined this, primarily in special education and ADHD contexts.

What the evidence shows

Visual timers provide a more intuitive sense of time for students who struggle with number sense or time perception. The pie-slice format lets students see proportion — 'about half the time is left' — without needing to calculate.

Try both and compare

Use a visual timer for younger students and a classroom timer (numeric countdown) for older ones. Both are free — try them and see what works for your students.