In IELTS Academic Writing Task 1, you describe visual information: a graph, chart, table, map, process or a combination. It isn’t about your opinion. It’s about selecting the important information and reporting it clearly and accurately.
The short answer: write at least 150 words in about 20 minutes. Use four paragraphs: introduce the visual, give a clear overview of the main trends or features, then describe key details with comparisons. Don’t list every number, don’t add opinions, and don’t write a conventional conclusion.
What you might see
According to IDP, Task 1 may show:
- Line graphs
- Bar charts
- Pie charts
- Tables
- Maps
- Processes (diagrams showing stages)
- Combinations of these
A structure that works for most tasks
| Paragraph | What to write | Length |
| 1. Introduction | Paraphrase what the visual shows: what, where, when | 1–2 sentences |
| 2. Overview | The two or three most important trends, differences or stages | 2–3 sentences |
| 3. Detail 1 | Key figures for one group of information, with comparisons | 3–4 sentences |
| 4. Detail 2 | Key figures for the other group, with comparisons | 3–4 sentences |
The overview: the most important paragraph
IDP describes a strong response as one that includes a clear overview summarising the most important trends, differences, stages or features. Ask yourself:
- What’s the biggest change or the highest and lowest value?
- What’s the general direction: rising, falling, stable?
- For a process: how many stages, and where does it start and end?
- For maps: what are the main changes between the two maps?
Write the overview without detailed numbers. The numbers go in the detail paragraphs.
Choosing which figures to include
You don’t have time, or space, for every number. Pick:
- Starting and ending values
- Peaks and lowest points
- Notable comparisons, such as “twice as much as” or “overtook”
Approach by visual type
Line graphs (change over time). Group lines with similar trends. Use time phrases (“between 2010 and 2020”) and trend language (“rose steadily”, “peaked at”, “fell sharply”).
Bar charts and tables (comparisons). Group by category or by year, and compare the highest and lowest values.
Pie charts (proportions). Use percentage and fraction language (“just under a third”, “the largest share”).
Processes (stages). Use the passive voice and sequencing words (“first”, “next”, “once…, …”, “finally”). State the number of stages in the overview.
Maps (changes to a place). Describe what was added, removed or changed, using location language (“to the north of”, “replaced by”).
Sample overview sentences (illustrative)
- Overall, the number of students choosing online courses increased significantly, while enrolment in evening classes declined throughout the period.
- Overall, the process consists of six stages, beginning with the collection of raw materials and ending with packaging.
- Overall, the town became more residential, with the farmland in the north replaced by housing and a new school.
Common mistakes
- No overview, or an overview buried in the detail paragraphs.
- Listing every number without comparisons.
- Giving reasons or opinions that aren’t in the visual.
- Copying the task wording instead of paraphrasing.
- Writing a “conclusion” that repeats everything.
- Inaccurate data: reading the scale wrongly.
Time plan (about 20 minutes)
| Minutes | Step |
| 0–3 | Study the visual; identify the overview |
| 3–17 | Write four paragraphs |
| 17–20 | Check numbers, word count and grammar |
Frequently asked questions
How many words should Academic Task 1 be?
At least 150 words. Aim to finish in about 20 minutes so you have time for Task 2.
Do I need a conclusion in Task 1?
No. IDP advises against a conventional conclusion. Write an overview instead.
Should I give my opinion?
No. Report and compare the information shown.
Do I need to mention every number?
No. Select key figures and make comparisons.
Is Task 1 marked differently from Task 2?
Task 1 is assessed on Task Achievement; Task 2 on Task Response. Both are also assessed on coherence and cohesion, vocabulary and grammar. Task 2 counts twice as much.
Practise with feedback
Task 1 improves fastest with regular practice and specific feedback on your overview and data selection. See our IELTS courses or register. Also read common IELTS writing mistakes.