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[P+S] Primary & Secondary Traceable Decisions

The Evidence Overlay

Multimodal editing has raised the polish ceiling. Students can produce work that looks school-ready by default. The problem to design for is separating product from proof. An Evidence Overlay does exactly that.
Classroom Strategy

For the next polished product task, require an Evidence Overlay with four components. Collect it with the product.

  • Three claims made in the work
  • Three sources from class materials, one for each claim
  • One limitation or uncertainty acknowledged
  • One verification move the student made

Students can record an oral overlay if writing is a barrier. Visual overlays, labels, arrows, and annotations, are just as valid as written ones. The format is flexible. The requirement is not.

What the Overlay Separates

A polished poster, slideshow, or video can look convincing without any genuine understanding behind it. The Evidence Overlay makes that impossible to hide, because it requires the student to name where each claim came from, what the limits of the work are, and what they checked.

A student who cannot complete the overlay cannot have genuinely produced the work. A student who can complete it has demonstrated understanding regardless of how polished the product looks. That is the design win.

Primary — Year 4

Students create a poster, then add sticky-note labels: "This claim came from...", "This is uncertain because...", "We checked this by..." Takes minutes and reveals who understands and who is copying confident sentences.

Secondary — Year 10

Students submit a short video plus a one-page overlay: three key claims, the source for each, and a short limits paragraph. Fits NCEA realities by building evidence of process without requiring detection tools.

Cross-Curricular Applications

The Evidence Overlay works across every subject area because the four components map naturally to disciplinary thinking in each one.

  • Science: claims from data, sources from experiment notes, limitation from sample size or conditions
  • Social Sciences: claims from inquiry, sources from class texts, limitation from perspective or missing voices
  • English: claims from interpretation, sources from the text, limitation from ambiguity or alternative readings
  • Health: claims from evidence, sources from class resources, limitation from context or relevance
Decision Checkpoint

Does my task design make it possible to hand in a polished product with no evidence trail? If yes, what overlay or supervised checkpoint will fix that?

Governance Reminder

Teachers can assess the trace without punishing creativity. Visual overlays, labels, arrows, and annotations are just as valid as written ones. The overlay is not a penalty. It is the evidence that the learning happened.

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