Cold Call To Sample Pair Responses¶

Strategy · All strategies
Evidence · 5 claims (5 for) · 16 studies (9 quant-synthesis, 3 causal, 2 review, 1 associational, 1 theoretical), q2–q4 · 7 of 16 report an effect size

Description¶

This strategy combines Think-Pair-Share-style pair work with cold calling: instead of asking for volunteers after pair discussion, the instructor names specific students and asks them to report what their pair said. Because any student may be called, every pair has an incentive to produce a discussable answer, and the instructor gains a representative sample of the class's thinking rather than a skewed sample of confident volunteers.

Design Implications¶

Cold calling after pair work converts discussion from optional participation into accountable engagement, and sampling pair responses doubles as a formative check on whole-class understanding Active learning improves exam performance relative to lecture alone. [+S]. Calling on students to report a pair's answer lowers the social risk of cold calling — the student speaks for two people, not alone — which mitigates the anxiety that unstructured cold calling can produce [~M]. The reported responses also serve as retrieval practice: articulating a discussed answer from memory strengthens retention more than re-exposure Spaced repetition improves retention. [+S].

Context¶

Requirements¶

• A well-posed question that pairs can genuinely engage with in the allotted time
• Norms established in advance: cold calling is expected, framed as sampling rather than punishment, and "we didn't finish" is an acceptable answer
• Sufficient wait time (3+ seconds) after the question before and after calling on a student
• Instructor follow-through: responding to the sampled answer with brief, task-level feedback rather than moving on Feedback is most effective at task and process levels. [+S]

Constraints¶

• Cold calling without prior pair discussion raises anxiety and can suppress voluntary participation in later classes [~M] — the pair discussion is the load-bearing component, not the cold call itself
• If students believe the cold call is a surveillance or discipline tool rather than a sampling mechanism, it damages classroom climate and reduces willingness to risk partial answers
• Instructors who call only on students they suspect are unprepared undermine the strategy; sampling must be visibly random or equitable
• Less effective in very large lectures where reporting to the whole class is intimidating; small-group or written sampling (e.g., polling) is a better fit there

Implementation Variability¶

• Warm call: tell the student in advance ("Maya, I'll ask you and Sam to report in a minute") to reduce threat while preserving accountability
• Randomized selection: name cards, wheel apps, or LMS rosters to make sampling visibly fair
• Written sampling: collect pair answers on whiteboards or a polling tool and cold-call a pair to explain what they wrote
• Sequential sampling: call two or three pairs with contrasting answers and have the class adjudicate, turning sampling into whole-class argumentation

Target Learners¶

• Adolescents through adult learners; the pair-report structure is especially valuable for students who avoid volunteering due to low confidence Self-efficacy predicts academic persistence. [+M]
• Multilingual learners benefit from rehearsing the answer with a partner before public reporting [~M]
• Students with severe social anxiety may need the warm-call variant or an opt-out norm; blanket cold calling can be counterproductive for them [-W]

Target Learning Goals¶

• Conceptual understanding: surfacing and comparing peer reasoning exposes students to alternative interpretations Self-explanation improves conceptual understanding. [+S]
• Retrieval and retention: reporting from memory after discussion acts as low-stakes retrieval practice
• Classroom discourse norms: building a culture where every student is expected to think and speak

Instructions¶

1. Pose a focused question and give pairs 1–3 minutes to discuss (Class Discussion).
2. Circulate during the discussion, listening for interesting or contrasting answers to inform your sampling.
3. Cold-call a student to report their pair's answer; use wait time and follow-up probes ("Why did your pair choose that?").
4. Sample one or two more pairs, ideally with different answers, and briefly synthesize or correct.
5. Deliver task-level feedback on the sampled answers before moving on Feedback is most effective at task and process levels. [+S].

Related Strategies¶

• Think-Pair-Share — the pair-discussion structure this strategy builds on; cold calling replaces the volunteer-based share phase
• Cold Call — the base technique; this variant adds pair discussion to lower risk and improve answer quality
• Wait Time — the pause discipline that makes cold calling a thinking prompt rather than a gotcha
• Random Calling — the equity mechanism that makes sampling visibly fair

Examples¶

• Teach Like a Champion (Lemov, 2021) — "Cold Call" is one of the core techniques; Lemov explicitly recommends cold calling after turn-and-talk so students report rehearsed answers, and describes "warm calling" as the on-ramp for reluctant speakers. See Teach Like a Champion.
• Harvard Business School case discussion — instructors cold-call students to open case analysis, and in discussion-based courses frequently ask students to build on a classmate's prior comment, making pair or small-group preparation accountable to public reporting.
• Secondary math classrooms using number talks — after pairs solve a mental-math problem, the teacher samples pairs to elicit contrasting solution strategies for whole-class comparison.

Key Sources¶

• Dallimore, E. J., Hertenstein, J. H., & Platt, M. B. (2013). Impact of cold-calling on student voluntary participation. Journal of Management Education, 37(3), 305–341. doi:10.1177/1052562912446067
• Dallimore, E. J., Hertenstein, J. H., & Platt, M. B. (2008). Using discussion pedagogy to enhance general education and student learning. Journal of General Education, 57(3), 134–163.
• Rowe, M. B. (1986). Wait time: Slowing down may be a way of speeding up! Journal of Teacher Education, 37(1), 43–50. doi:10.1177/002248718603700110
• Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255. doi:10.1111/j.1467-9280.2006.01693.x
• Lemov, D. (2021). Teach Like a Champion 3.0. Jossey-Bass.