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Academic · TT-16 · Text type guide

Data commentary

Describe and interpret a graph, table or chart. Explore its shape, language, tone and register, then switch the advice to fit your curriculum context.

Printables and downloads
Download one-page guide ↓Teacher checklist ↓Scaffolds and frames ↓Weaker / stronger models ↓
Maths and science writing

Describe the pattern before explaining it.

Name the interval, quote two values with units and qualify exceptions. A correlation alone does not establish a cause.

Teacher prompt: Which detail lets your reader check this claim?

Independent check: Use a fresh example. Ask the learner to identify the evidence and one limit without copying the model.

Explore subject support
Model clinic

Compare a draft with a stronger version.

Less effective: The graph goes up and then down.

More effective: Sales rose steadily from March to June, peaked at 420 units, then fell by about a quarter in July.

The commentary selects a trend, peak and comparison.

How the text works

Purpose, shape and language.

Purpose: Describe and interpret a graph, table or chart

Common forms: Science, maths, economics, geography

Typical structure: Introduce the figure → key pattern → comparisons or exceptions → possible interpretation

Language features: Trend verbs; quantities; comparison forms; cautious cause language

Tone and register: Concise and neutral; use cautious wording where a figure cannot prove a cause.

Teaching guidance

Select the two or three strongest patterns. Quote units and avoid claiming causes from correlation alone.

Quick learner checklist

  • □ The opening makes the purpose clear: Describe and interpret a graph, table or chart.
  • □ Each part has a clear place and moves the reader towards the purpose.
  • □ The language features, tone and level of formality fit the reader and situation.
  • □ I have checked the details, paragraphing and punctuation before sharing.
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