Cold Call
Ask the question before you name who will answer, so the whole class keeps thinking
Use this when
What is it?
Cold Call means asking the whole class a question, allowing time to think and then choosing who will answer. You do not rely on raised hands. The order matters: while nobody knows who will be chosen, everyone has to prepare an answer. With volunteers, five students do that thinking. With Cold Call, thirty do.
The steps
- Explain it before you first use it. Tell the class early in the year:I'll often choose who answers in here. It's not to catch you out: it's because everyone's thinking matters. If you're stuck, we'll work it out together.Without this explanation, being chosen can feel like a trap.
- Ask the question to the whole class. For example:Why does the ice melt faster on metal than on wood?
- Wait three seconds. Say nothing and look around the room calmly. Students do their thinking in this silence, so do not talk over it.
- Then say the name. Use the same tone you would use with a volunteer:…Priya, what do you think?Put the name at the end, never the start. If you begin with the name, everyone else stops thinking.
- Take every answer seriously. If it is correct, ask a follow-up question. If it is partly correct, build on it. If the student is stuck, stay warm:No problem. Listen to the next answer. I'll come back to you.(See Circle Back.)
- Spread your questions, and keep track. Add a dot to the seating plan each time you choose someone. Over a week, everyone should be asked.
What it looks like
In the classroom
Ms Osei's class of 12-year-olds is halfway through a lesson on density. "The same stone is now in salt water. Will it float higher, sink lower or stay the same?" She counts three seconds in her head while scanning the room. "…Jonah?" Jonah pauses. "Higher? Because the salt water is… thicker?" "Right idea. What's our word for 'thicker' here?" "Denser." "Denser. Now say the whole thing." "It floats higher because salt water is denser."
Two questions later, she calls on Amira, who cannot answer. "No problem. Listen to Dan's answer. I'm coming back to you." Dan answers. She returns to Amira, who answers quietly in her own words this time.
How you’ll know it’s working
- Students keep thinking during the pause. The switching-off that follows "any volunteers?" disappears.
- There is a genuine, silent gap of about three seconds between the question and the name.
- The seating-plan tally shows that everyone is asked across a week, rather than the same few students.
- Students who are stuck are invited back into the exchange instead of being passed over.
Pitfalls & fixes
- Saying the name first. "Jonah, why does…" releases everyone else from thinking. Ask, wait, then name.
- Using it to catch students out. If Cold Call becomes a behaviour trap, choosing a daydreaming student to embarrass them, every question can start to feel like an accusation. Watch for this in your own practice. The benefit comes from the expectation that anyone might be chosen, not from targeting particular students.
- Rushing the pause. If you name someone half a second after asking the question, only the fastest thinkers can take part. Count an honest three seconds.
- Only calling on strugglers. Students notice that pattern within days. Call on your strongest students too, and stretch their thinking.
Weigh it up
Why it’s worth it
- Every student rehearses an answer to every question, not just the volunteers. Participation stops being optional, and the number of minds working on each question increases roughly fivefold.
- On review questions, it also provides retrieval practice: the whole class practises remembering and then hears the answer confirmed.
- It gathers assessment information throughout the lesson. Each answer gives you another sample of student understanding, while volunteer-only answers are more likely to over-represent confident students.
- Attention rises across the room because anyone might be chosen, improving behaviour and focus without the need for a correction.
- Over several weeks, it builds a culture in which thinking is everyone's responsibility and gives quieter students a way into discussions that hands-up questioning does not provide.
The costs
- The increased alertness can feel like anxiety for some students in the early weeks. Supportive adjustments, such as private advance notice or a Turn & Talk first, can reduce this without removing the benefit.
- It is slower than taking eager hands.
- It takes weeks of consistent, warm use to feel routine, so it should not be introduced without preparation to an unfamiliar class.
Worth it when
the same few hands dominate; questions to the room are met with silence; attention drifts during whole-class teaching; or you want participation, retrieval and assessment information from the same five minutes.Think twice when
you have not yet built trust with the class, or when individual students are experiencing acute anxiety. Build safety first with rehearsed formats such as Show-Me Boards and Turn & Talk, then introduce calling on students by name.Adaptations
- Early years / lower primary: let students rehearse in pairs first, then choose someone to report back: "Tell your partner… now, Sam, what did you two say?" Answering for the pair halves the exposure.
- Primary: name sticks or cards can provide a scaffold for random selection at first. Move beyond them when you can: choosing who and when deliberately is where the value lies.
- Post-16 / adult: present it as a seminar norm: "I'll invite people to contribute by name." This makes the approach feel professional.
- Practical subjects: use Cold Call during moments when students watch and explain: "Freeze. Leah, what should his back leg be doing?"
Where this comes from
Strong research
Doug Lemov codified the approach for schools in Teach Like a Champion, but the practice itself is long-standing: law schools have used a version of it in Socratic questioning for over a century.
Sources
StrongRosenshine, Principles of Instruction: effective teachers ask large numbers of questions and involve all students, rather than relying on volunteers.
Promisingparticipation research: when any student may be asked, every student rehearses an answer. The specific format has not been trialled in isolation.
Related techniques
Wait Timethe three seconds in step 3. Without it, Cold Call disadvantages students who need longer to think.Circle Backa companion response to "I don't know" that keeps every student involved in the thinking.Set How They'll Answertell students whether a question will use Cold Call, hands or boards. This reduces calling out.Turn & Talka lower-pressure option: students rehearse in pairs first, then you use Cold Call when confidence is higher.Show-Me Boardsuse these when you want everyone's answer at once rather than one spoken response.
classtested.com/techniques/cold-call — steps, signs it’s working, and trade-offs on one page. Ratings and discussion online.
Ratings & discussion
Ratings loading…