Years 7–8Mathematics and StatisticsTrace Map

Making data provenance visible

Building statistical literacy as a provenance practice at Years 7–8

The condition

Students encounter statistical claims from AI-generated and algorithmically curated sources every day, with no visual cue that a check is needed. When students use data claims in their own work without tracing where those claims came from or what they would need to verify, they are practising something that looks like statistical thinking but is missing its most important step. Provenance is not a separate literacy skill — it is part of what statistics requires.

The move — Trace Map

For any data claim used in maths or statistics work, students record three things: what is being asserted, where the evidence comes from, and what they would need to verify before using it in their own work. Where the trail goes cold, they mark the gap.

  1. When students use any statistical claim in their work — from a class resource, their own research, or a tool — ask them to complete a Trace Map entry for that claim before it becomes part of their analysis.
  2. The Trace Map has three columns: The claim (what is being asserted, in the student's own words), The source (where the evidence comes from, as specifically as possible), and What I would need to check (what would have to be true for this claim to be reliable for this task).
  3. Where students cannot complete the source column — they found the number somewhere but cannot trace it back — they mark it as a gap rather than leaving it blank. A marked gap is honest. An empty cell is not.
  4. Students use only Trace Map entries with completed source columns in their final analysis. Claims with marked gaps are held out or investigated further.
  5. The Trace Map travels with the finished work. Assess the quality of the sourcing and the honesty of the gap-marking alongside the quality of the analysis itself.
What the student produces
A Trace Map table showing each statistical claim used, its specific source, and what the student identified as the verification requirement. Where the trail goes cold, a marked gap. The table makes data provenance visible as a standard part of the statistical work, not as an add-on check performed at the end.
Why it holds up

The Trace Map makes provenance a mathematical literacy practice rather than a detection exercise. A student who can name where a claim came from, and what would need to be true for it to hold in their specific context, has demonstrated statistical thinking the curriculum is designed to develop. A student who cannot complete the source column has identified a genuine gap in their analysis — which is exactly the kind of honest reasoning statistics requires.

Teacher judgement note

Reward honest gap-marking explicitly and consistently. A student who writes "I found this number on a website but cannot find the original study" is demonstrating better statistical thinking than one who treats the number as settled. Make this distinction visible to the class.

Governance reminder

Introduce the Trace Map as a standing requirement for any statistical claim used in Years 7 and 8 work. When students expect to be asked where a number came from before they use it, they begin reading data sources more carefully from the start. Brief your maths team: the Trace Map is assessed alongside the analysis, not as scaffolding to be removed.

NZ Curriculum connection: Mathematics and Statistics — Statistical literacy; Statistical investigations; Key competency: thinking

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