Activating Prior Knowledge¶

Strategy · All strategies
Evidence · 3 claims (2 for, 1 against) · 9 studies (4 quant-synthesis, 3 causal, 2 review), q3–q4 · 5 of 9 report an effect size

Description¶

Activating prior knowledge is a strategy in which the instructor or learning environment deliberately prompts learners to retrieve and articulate what they already know before encountering new material. This can take the form of open questions, brainstorming, quick recalls, prediction tasks, or Advance Organizers. The goal is to make relevant existing schemas available in working memory so that new information can be connected to — and integrated with — what is already known, rather than encoded as isolated facts.

Design Implications¶

Retrieval of relevant prior knowledge at the start of instruction improves comprehension and retention by giving new material an existing structure to attach to Activating prior knowledge before instruction improves learning outcomes. [+S]. The activation must be relevant: prompts that surface knowledge actually connected to the new content support integration, while generic warm-ups do not. Because activation is itself a retrieval event, it also strengthens the memory of the activated material Retrieval practice strengthens long-term retention more than restudying. [+S].

Context¶

Requirements¶

• Knowledge of what learners are likely to already know (from prior units, everyday experience, or diagnostic assessment)
• Prompts that target knowledge relevant to the upcoming material, not just any prior knowledge
• Enough time for learners to genuinely retrieve and articulate, rather than passively hear a recap
• A follow-on move that explicitly links surfaced knowledge to the new content (Analogies, Advance Organizers, or explicit connection statements)
• A prompt that targets knowledge genuinely prerequisite or relevant to the new material
• Brief, time-boxed activity (typically 3–10 minutes) so activation does not displace instruction
• A mechanism for the instructor to observe what learners surface (discussion, written response, poll) and respond to misconceptions

Constraints¶

• Activating inaccurate or naive prior knowledge can interfere with new learning; misconceptions surfaced without correction become reinforced Preexisting misconceptions interfere with learning new, related content. [-S] — instructors must plan to confront and restructure surfaced errors, not merely elicit them
• Activation of vivid but irrelevant knowledge can hijack attention and working memory away from the target content [~M]
• If learners lack any relevant prior knowledge, activation prompts produce guessing and frustration rather than integration; direct building of background knowledge is needed first [~S]
• Over-reliance on teacher-provided summaries of prior content (instead of learner retrieval) reduces the benefit, since passive review does not strengthen schemas Retrieval practice strengthens long-term retention more than restudying. [-S]
• Activating incorrect or naive conceptions without subsequently addressing them can entrench misconceptions [~M] — activation surfaces errors but does not correct them; pair with Cognitive Conflict or refutation when misconceptions are likely
• If learners have little or no relevant prior knowledge, activation prompts waste time and may frustrate; build background first instead [~S]
• Overly long or open-ended brainstorming can raise extraneous load and dilute focus on the learning goal Cognitive load management principles favor brief, focused activation. [~M]

Implementation Variability¶

• Retrieval prompts: brief recall questions or low-stakes quizzing on prerequisite material (Retrieval Practice)
• Prediction tasks: asking learners to predict outcomes of a demonstration or experiment before seeing them, which surfaces intuitions and creates readiness for feedback
• Analogy and metaphor: mapping a familiar domain onto the new one (Analogies)
• Graphic advance organizers: previews of the structure of upcoming material (Advance Organizers)
• KWL and similar routines: structured elicitation of what learners Know, Want to know, and later Learned
• Diagnostic pre-assessment: using quick checks to identify gaps or misconceptions before instruction begins (Assessment for Learning)
• Oral: quick turn-and-talk or whole-class brainstorm before a lesson
• Written/structured: KWL charts, anticipation guides, pre-questions embedded in text
• Predictive: asking learners to predict an outcome before demonstration or reading — predictions create readiness to resolve uncertainty
• Analogical: prompting recall of a familiar parallel domain (Analogies, Analogies and Prior Knowledge Activation)
• Digital: entry polls or discussion-board pre-posts in online courses

Target Learners¶

• Novices with fragmented but relevant knowledge who need help connecting it to new material Activating prior knowledge before instruction improves learning outcomes. [+S]
• Learners whose everyday experience contains relevant intuitions (including misconceptions) that instruction should surface and address
• Less useful for complete novices with no relevant knowledge to activate; for them, building background knowledge precedes activation [~S]
• Novices with minimal background need background building rather than activation; activation alone will not help them [~S]
• Learners with strong expertise may find activation redundant and even interfering, consistent with the expertise-reversal pattern [~M]

Target Learning Goals¶

• Conceptual understanding: integrating new concepts with existing knowledge structures
• Misconception repair: surfacing and restructuring naive or erroneous ideas
• Transfer: establishing the connections that later support applying knowledge in new contexts
• Comprehension of new expository or narrative text
• Conceptual change in science and mathematics, where intuitive conceptions must be surfaced first
• Retention and recall of new material connected to existing schemas
• Metacognitive awareness of what one does and does not yet know

Instructions¶

1. Identify the prerequisite knowledge and common misconceptions relevant to the new material, using curriculum analysis or a quick diagnostic (Assessment).
2. Open the lesson with a brief, relevant retrieval or prediction prompt — a question, brainstorm, or Advance Organizer — that requires learners to produce, not just hear, prior knowledge.
3. Surface responses publicly and use them to build a bridge: name connections explicitly, or map them with an Analogy or organizer.
4. Where misconceptions emerge, confront them directly with evidence or Cognitive Conflict rather than ignoring them.
5. Proceed into new content while continuing to make explicit links back to the activated knowledge.

Related Strategies¶

• Retrieval Practice — activation is a retrieval event; spaced retrieval of prior units doubles as review
• Pretesting — asking questions about not-yet-learned material, a related "forward" activation that primes attention
• Misconception Repair — the necessary follow-through when activation surfaces errors
• Spaced Practice — activation prompts at lesson openings can implement spacing of earlier content
• Verify Prerequisite Knowledge Before Audiovisual Presentations
• Check context familiarity by asking the class to share what they know about a problem's context before working on it
• Activate Background Knowledge — closely related routine emphasizing learner background and experience
• Accessing Students' Background Knowledge — asset-based variant focused on cultural and lived experience
• Group Pupils During Science Experiments and Demonstrations
• Embed the KWL strategy across inquiry phases to guide question generation and question-quality monitoring
• During the discussion, the teacher asks directive questions that point to the relevant concepts students need to recall from their subsequent self-study

Examples¶

• KWL charts — a widely used reading-comprehension routine in which students list what they Know and Want to learn before reading, then return to record what they Learned.
• Physics "Predict-Observe-Explain" (POE) — students predict the outcome of a demonstration (e.g., which object falls faster), observe, and reconcile their prediction; the prediction surfaces intuitive physics for direct confrontation.
• Annenberg Learner science and math video lessons open with elicitation questions that draw on students' everyday experiences before introducing formal concepts.
• Anticipation guides in science class: students agree/disagree with statements like "heavier objects fall faster" before a unit on gravity; the teacher revisits the guide after instruction to confront misconceptions.
• KWL charts in elementary reading: learners list what they Know and Want to know before reading, then record what they Learned.
• Pre-questions in online courses: platforms such as Khan Academy open lessons with a warm-up question that retrieves prerequisite skills before new instruction.
• Case prediction in medical education: students predict a diagnosis from a presenting complaint before the full case is revealed, activating relevant clinical schemas.

Key Sources¶

• Ausubel, D. P. (1968). Educational psychology: A cognitive view. Holt, Rinehart & Winston.
• Bransford, J. D., & Johnson, M. K. (1972). Contextual prerequisites for understanding: Some investigations of comprehension and recall. Journal of Verbal Learning and Verbal Behavior, 11(6), 717–726. doi:10.1016/S0022-5371(72)80006-9
• 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
• Karpicke, J. D. (2012). Retrieval-based learning: Active retrieval promotes meaningful learning. Current Directions in Psychological Science, 21(3), 157–163. doi:10.1177/0963721412443552
• Pressley, M., et al. (1992). Encouraging mindful use of prior knowledge: Attempting to construct explanatory answers facilitates learning. Educational Psychologist, 27(1), 91–109. doi:10.1207/s15326985ep2701_7
• Ambrose, S. A., Bridges, M. W., DiPietro, M., Lovett, M. C., & Norman, M. K. (2010). How learning works: Seven research-based principles for smart teaching. Jossey-Bass.