20-Minute Timer for the Classroom

Twenty minutes is a long stretch for focused work — a short quiz, a project work session or a timed practice section. Students benefit from knowing how to pace themselves within it.

Quiz pacing in 20 minutes

Showing pacing on the board next to the timer (“halfway — you should be near question 10”) teaches a skill students will need on longer tests. If you want time to review answers, plan the pacing on 16 minutes and keep the red final 4 minutes for checking.

Using 20 minutes for projects

Long tasks drift without checkpoints. Break the 20 minutes into goals written on the board:

• By 15:00 left — plan agreed, roles assigned.
• By 8:00 left — first draft or first result done.
• Red stretch (4:00 left) — save work, write next steps, tidy up.

Group roles from the random group generator help here: a timekeeper calls each checkpoint so you don’t have to.

Keep longer timers useful

Put the timer in full screen or a corner of the projector so it’s always visible; a timer students can’t see doesn’t help them pace. For a quiz, tell students whether the red stretch is “finish and check” time before you start, so nobody is surprised.

Scoring the quiz afterward is quicker with the EZ Grader, which turns the number wrong into a percentage. For quizzes with mixed question types, give harder questions a larger share of the time rather than splitting it evenly.