IELTS process diagrams: turn stages into a connected explanation
Practise Academic Task 1 process descriptions by identifying boundaries, grouping stages and choosing useful active or passive sentences.
A process diagram replaces numerical trends with relationships between stages. Naming equipment is not enough. Your reader needs to follow what enters the process, how it changes and where it goes next.
Trace the route before drafting
Follow the arrows and identify the beginning and end. For a cycle, do not invent a final destination that the diagram does not contain. Note inputs, outputs and any parallel branches. Group stages into meaningful phases such as preparation, transformation and packaging. This grouping is a practice tool rather than a fixed exam rule. Do not remove a necessary stage merely to make the description shorter or more symmetrical.
Describe the actual change
In an invented fruit-processing example, fruit is washed, cut and dried. Passive sentences may work when the diagram does not identify the person performing those actions. Natural cycles may be clearer with active verbs. Replace vague statements about a process happening with the specific change shown. Never add a temperature, duration or ingredient because it seems plausible. General knowledge should not replace the evidence available in this particular visual.
Check that the reader can follow
Read your explanation while tracing the arrows again. Does every transition connect to the correct next stage? Sequencing expressions help, but starting every sentence with the same connector makes the text mechanical. Check pronoun references and parallel branches during revision. In your next session, use a fresh diagram and prepare only the overview and stage groups before writing the full response. This isolates organisation from vocabulary and makes missing links easier to notice.
For your next session
- Identify a line or cycle.
- Record parallel branches.
- Add no invented details.
- Check sentence order against arrows.
A common question
Must every sentence be passive?
No. Choose active or passive language according to the action and information shown, rather than a memorised formula.
Sources and further reading
Check test-format information against the official sources below. Practice methods and examples in this guide are original suggestions.
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