IELTS Task 1: How to Describe Maps and Process Diagrams

Maps: the basic structure

A map question usually shows the same location at two different times, such as a town in 1990 and today, or sometimes a present layout and a proposed future plan. Your task is to describe the main changes, not to list every building. Use the same four-part shape that works across Task 1.

• Introduction: paraphrase what the maps show, including the place and the two time periods.
• Overview: summarise the most significant changes in two or three sentences, for example that the area became far more developed and urbanised.
• Body paragraph 1: describe the changes in one part of the map in detail.
• Body paragraph 2: describe the changes in the remaining part of the map.

A good way to split the body is by location, such as the north versus the south, or by theme, such as housing changes versus transport changes. Choose whichever makes your description clearest and easiest to follow.

Maps: tenses and the language of change

Tense choice depends on the time periods shown. If both maps are in the past, use the past simple. If one is present and one is a future plan, use the present simple and future forms. When comparing a past state with the present, the present perfect is often useful for describing what has changed.

• The forest to the east was cleared to make way for a housing estate.
• A large shopping centre was constructed in the town centre.
• The small farm was replaced by a car park.
• The area of woodland was significantly reduced over the period.

Maps: describing location precisely

Because maps have no numbers, the examiner is looking for accurate use of prepositions and directions. Precise location language is essential for a clear description and directly supports your Coherence and Cohesion and Lexical Resource scores.

• Compass points: in the north, to the south, in the north-east corner, along the western edge.
• Relative position: next to, adjacent to, opposite, alongside, surrounding, in the centre of.
• Direction and distance: to the north of the river, on the outskirts, near the coast, a short distance from the station.
• Example: A new bridge was built across the river in the south-west of the town, connecting the two residential areas.

Use the passive voice frequently when describing maps, because the changes are usually made by unnamed people or authorities. Sentences like A road was widened or Trees were planted sound natural and appropriate for this task.

Process diagrams: the basic structure

A process diagram shows the steps of how something is made or how a natural cycle works, such as how cement is produced or how rainwater is collected. The key skill is describing the stages in the correct sequence from start to finish. The structure mirrors the map answer but the overview focuses on the process as a whole.

• Introduction: paraphrase what the diagram illustrates.
• Overview: state how many stages there are and note where the process begins and ends, and whether it is linear or a cycle.
• Body paragraph 1: describe the first group of stages in order.
• Body paragraph 2: describe the remaining stages through to the end product.

For the overview, a sentence like Overall, the process consists of seven main stages, beginning with the collection of raw materials and ending with packaging, immediately shows the examiner you have grasped the whole process. This is exactly what Task Achievement rewards.

Process diagrams: sequencing language

Sequencing words are the backbone of a process description. They make the order of stages clear and keep your writing cohesive. Vary them rather than repeating then for every step.

• To start: first, to begin with, initially, at the first stage, the process begins when.
• To continue: next, after that, subsequently, following this, once this is complete, at the following stage.
• To show simultaneous steps: meanwhile, at the same time, while.
• To finish: finally, lastly, in the final stage, the process ends when.
• For cycles: the cycle then repeats, after which the process begins again.

Process diagrams: tense, voice and connecting stages

Process diagrams are almost always described in the present simple, because they show a general, repeated procedure rather than a one-off past event. The passive voice is very common, because the focus is on the action rather than who performs it.

Link stages so the description reads as a connected process, not a list. Relative clauses such as which is then transported and phrases showing purpose or result help the stages flow into one another. This lifts your Coherence and Cohesion score above a mechanical step-by-step account.

Common mistakes to avoid

Both question types share a few pitfalls that quietly lower scores. Knowing them in advance helps you avoid them under time pressure.

• Skipping the overview: without a clear overview, neither maps nor processes can reach the higher bands.
• Describing every tiny detail: select the significant changes or main stages instead of trying to cover everything.
• Wrong tense: use the past for completed map changes and the present simple for processes.
• Adding opinions or reasons: describe only what the diagram shows, without explaining why or judging it.
• Forgetting the passive: overusing active sentences with vague subjects like they sounds less formal and precise.

Practise a few maps and a few process diagrams before your test so these structures and phrases become automatic. With only 20 minutes for Task 1, having a ready-made framework means you spend your time describing the content well rather than working out how to begin.