Bell ringers — also called bell work, do-now activities, or warm-ups — are the short tasks students do at the very start of class. Done well, they activate prior knowledge, transition students into learning mode, and review skills students need for the day's lesson. Done poorly, they're busywork that wastes the first 10 minutes of every period. The difference is in the design.
What Makes a Good Bell Ringer
- Takes 5 minutes or less. Anything longer eats into instruction.
- Requires no instructions. Students should be able to start immediately upon arrival without you explaining anything.
- Reviews recently taught content. Bell ringers are spaced repetition for the previous days' lessons.
- Connects to today's lesson when possible. Reviewing the prerequisite skill primes the brain for the new content.
- Doesn't require grading. Bell ringers are formative, not summative. Check participation, not accuracy.
Best Bell Ringer Formats
Infinilearn Sprint
Students open Infinilearn and play for 5 minutes. The adaptive system serves each student's level — no instructional differentiation needed. Every student does productive math from the moment they sit down. Cumulative effect: 5 minutes × 180 days = 900 minutes (15 hours) of additional adaptive practice over a school year. The teacher dashboard tracks individual progress.
Number of the Day
Project a number on the board (e.g., 84). Students write as many mathematical expressions equal to that number as possible in 4 minutes. 12 × 7, 100 - 16, 168/2, 9², + 3, etc. Award bonus points for using fractions, exponents, or other "fancy" operations. Builds number flexibility.
Solve and Show
Display one problem on the board. Students solve it on their paper or whiteboard, showing work. After 3 minutes, call on a few students to share their approach. Different solution methods spark discussion.
Spot the Error
Display a "solved" problem with an intentional mistake. Students find the error and write the correct solution. Develops error-checking habits and reinforces correct procedures.
Estimation Question
Project an image (jar of beans, building, athletic field). Ask students to estimate. After 2 minutes, reveal the answer. Closest estimates win small recognition. Builds number sense and estimation skills.
Mental Math Chain
"Start with 7. × 3 = 21. + 9 = 30. ÷ 5 = 6. × 8 = 48. - 13 = 35..." Students follow along mentally. Stop and check who can keep up. Builds mental math fluency.
Building the Routine
- Same routine every day. Students enter the room knowing exactly what to do. No instructions needed. Eliminates the 5-10 minutes of "settling in" that wastes most class periods.
- Visible from the door. Display the bell ringer on the board or screen so students see it as they enter. They start immediately.
- Time it. Use a visible countdown timer. When time's up, transition to the lesson — even if some students aren't finished.
- Brief debrief. Spend 1-2 minutes reviewing the bell ringer answer or discussing approaches. This reinforces the practice and validates the time spent.
The Bottom Line
Bell ringers convert the first 5 minutes of class — usually wasted on settling in — into productive practice. The Infinilearn sprint is the lowest-effort, highest-impact option: zero teacher prep, automatic differentiation, and dashboard data showing what every student practiced. Use it daily and watch the cumulative effect over the school year.