Random Calling¶

Strategy · All strategies
Evidence · 2 claims (2 for) · 6 studies (4 quant-synthesis, 1 review, 1 theoretical), q2–q4 · 4 of 6 report an effect size

Description¶

Random calling (also called cold calling or random nomination) is a questioning strategy in which the instructor selects respondents at random — by name cards, a spinner, an app, or a shuffled roster — rather than accepting volunteers. It is typically paired with wait time and often with think-pair-share so that learners have an opportunity to prepare an answer before being called on.

Design Implications¶

Random calling distributes participation across the whole class and keeps every learner cognitively engaged, since anyone may be asked next Active learning improves exam performance relative to lecture alone. [+S]. Its effectiveness depends on a low-threat climate: when paired with adequate thinking time, scaffolding, and a norm that partial answers are acceptable, it raises engagement; when used punitively, it suppresses it.

Context¶

Requirements¶

• A genuinely random selection mechanism (name cards, random.org, apps like ClassDojo or Wheel of Names) so learners cannot predict who will answer
• Sufficient wait time (3–5 seconds minimum) after posing the question before naming a respondent
• Established norms that make answering safe: right to pass initially, acceptance of partial answers, follow-up prompts rather than judgment
• Questions calibrated to learners' current understanding — answerable with the preparation provided

Constraints¶

• High-anxiety use (no preparation time, public correction of wrong answers) increases stress and reduces participation, particularly for learners with social anxiety [-M]
• Random calling without prior think time or pair discussion becomes a spotlight rather than a thinking prompt [~M]
• In large lecture settings without discussion structures, it can devolve into rapid-fire quizzing that benefits only the named learner
• Inequitable if questions consistently require background knowledge some learners lack

Implementation Variability¶

• Warm calling: announce the question to all, allow think/pair time, then draw a name — the most robust variant
• Random calling with passes: learners may pass a limited number of times per term, preserving accountability while reducing threat
• Group-level random calling: draw a team rather than an individual, useful early in team-based courses
• Digital randomization: tools like Wheel of Names or LMS rosters add perceived fairness and transparency

Target Learners¶

• Reluctant or quiet learners who would otherwise disengage during discussion — provided the climate is supportive [~M]
• Whole classes where a small subset of volunteers dominates discourse
• Less suitable, at least initially, for learners with acute communication anxiety; pair or written-response variants are better entry points

Target Learning Goals¶

• Formative assessment: surfacing the whole class's understanding rather than the confident few Assessment for learning improves achievement. [+S]
• Discussion quality and accountability in class discussion
• Attention and engagement maintenance during direct instruction

Instructions¶

1. Pose a question to the entire class before selecting anyone; give explicit think time.
2. Optionally have learners discuss with a partner first (think-pair-share), so every learner rehearses an answer.
3. Draw a name using a visible random mechanism, reinforcing that selection is fair and unpredictable.
4. Apply wait time after the learner responds; use follow-up prompts ("What makes you say that?") rather than evaluating immediately.
5. Normalize error: thank the attempt, probe reasoning, and redirect to peers to build on the answer.

Related Strategies¶

• Think-Pair-Share — the standard preparation structure that makes random calling low-threat
• Wait Time — the pause that converts nomination into thinking
• Cold Calling — the broader family of non-voluntary questioning techniques

Examples¶

• Wheel of Names (wheelofnames.com) — a free spinner teachers use to draw names publicly and transparently.
• EL Education / Responsive Classroom norms — random calling embedded within established discussion norms so accountability is paired with psychological safety.
• A statistics instructor poses a conceptual question, gives 60 seconds of silent think time, then two minutes of pair discussion, then spins the wheel — every learner has rehearsed an answer before anyone is named.

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
• Waugh, M., & Andrews, J. J. (2017). Effects of cold-calling on student participation and learning behaviors in a large-enrollment course. Journal of Teaching and Learning with Technology, 6, 45–60.
• Freeman, S., Eddy, S. L., McDonough, M., Smith, M. K., Okoroafor, N., Jordt, H., & Wenderoth, M. P. (2014). Active learning increases student performance in science, engineering, and mathematics. Proceedings of the National Academy of Sciences, 111(23), 8410–8415. doi:10.1073/pnas.1319030111
• 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