IELTS Writing Task 1 Academic: Graphs, Charts, Maps and Processes
IELTS Writing Task 1 Academic gives you a graph, chart, table, process diagram or map and 20 minutes to summarise it in at least 150 words. This guide covers the 7 task types, the 4-paragraph plan, the language you need and a model description marked against the 4 criteria.
IELTS Writing Task 1 Academic asks you to describe visual information, a line graph, bar chart, pie chart, table, mixed charts, process diagram or map, in a formal report of at least 150 words in about 20 minutes. Of the 4 equally weighted criteria, Task Achievement decides most Task 1 bands: whether you summarised the main features, compared the right things and reported the data accurately. This guide covers the 7 task types, a 4-paragraph plan, the language of trends, processes and maps, and a model answer on invented data marked against the 4 criteria.
Key takeaways
- IELTS Writing Task 1 Academic has 7 task types: line graph, bar chart, pie chart, table, mixed charts, process diagram and map.
- Every report needs 4 paragraphs: a paraphrased introduction, an overview with no numbers, and 2 detail paragraphs of grouped data.
- An overview stating the main trends or biggest changes is essential for band 7 or above on Task Achievement.
- Select 2 or 3 key features and group the data around them instead of listing every figure in order.
- Spend about 20 minutes and aim for 170–190 words, because Task 2 counts twice as much.
What are the 7 IELTS Writing Task 1 Academic task types?
The 7 Task 1 Academic task types are the line graph, bar chart, pie chart, table, mixed charts, process diagram and map. The first 5 show data, so you describe trends and comparisons; the last 2 show a system or a place, so you describe stages or changes.
| Task type | What the overview should capture |
|---|---|
| Line graph | Overall direction, biggest rise or fall, where lines cross |
| Bar chart | Highest and lowest categories, the main change |
| Pie chart | The dominant segment, the biggest shift |
| Table | Extremes and the clearest pattern |
| Mixed charts | One feature from each and the link between them |
| Process diagram | Number of stages, start and end, linear or cyclical |
| Map | The most significant transformation or difference |
If you are still choosing a module, read Task 1 Academic report vs General Training letter; this guide assumes Academic.
How should you structure an IELTS Task 1 report?
A 4-paragraph plan covers every Task 1 type: a paraphrased introduction, an overview without data, and 2 detail paragraphs of grouped data. Four paragraphs of 35–55 words each clear the 150-word minimum comfortably.
- Introduction. Rewrite the task in 1 or 2 sentences: what is measured, where, when and in what units. Change the verb ("shows" becomes "compares") and the time expression ("from 2010 to 2020" becomes "over a 10-year period"); copied wording is not credited.
- Overview. State the 2 or 3 most important features with no numbers: the overall direction, the largest and smallest categories, the biggest change, or the number of stages. Begin with "Overall," and put it second, not last, so a report that runs out of time still has its most valuable paragraph.
- Two detail paragraphs. Each takes one group of data (rising versus falling categories, the first half of the period versus the second, early stages versus later ones) and supports it with selected figures and comparisons that prove a feature named in the overview.
How do you pick the key features and group the data?
Pick key features by asking 4 questions before you write: what is highest, what is lowest, what changes most, and what stays the same? Those answers become your overview and your 2 detail groups.
- Extremes and direction. The biggest and smallest categories give you comparisons; the categories that rise, fall or fluctuate together give you your groups.
- Crossovers and exceptions. Lines that swap positions or a category moving against the others are details examiners expect you to notice.
- Select, do not list. A graph with 4 categories over 6 years holds 24 data points; a band 7 report quotes perhaps 8 to 10, approximating ("just under 40%") where values are not labelled.
Which language do you need for graphs, charts and tables?
Graph and chart reports need trend verbs and nouns, adverbs for the size and speed of change, and structures for comparison and proportion. Alternating verb and noun forms ("rose sharply" and "a sharp rise") is the simplest way to show range; the examiner rewards accurate, varied use rather than rare words.
Trend language
| Movement | Verbs | Nouns | Adverbs and adjectives |
|---|---|---|---|
| Upward | rise, increase, climb, grow, soar | a rise, an increase, growth | sharply, steadily, gradually, slightly |
| Downward | fall, decrease, decline, drop, dip | a fall, a decline, a drop | steeply, markedly, modestly, marginally |
| No change | remain stable, level off, plateau | a plateau, stability | broadly, relatively, roughly |
| Variable | fluctuate, vary, swing | a fluctuation, variation | considerably, wildly, slightly |
| Extremes | peak at, reach a high of, bottom out at | a peak, a high point, a low, a trough | by far, well above, just below |
Comparison and proportion language
| Function | Useful structures |
|---|---|
| Comparing 2 values | twice as many as, three times the figure for, half the number of |
| Ranking | the largest share, the second most popular, by far the lowest |
| Proportions | a quarter, just over a third, almost half, the vast majority, one in five |
| Change in share | accounted for, made up, rose from 20% to 35%, overtook |
Pie charts and tables, which often have no time axis, lean on this second table; more cohesive devices are in our guide to linking words and cohesive devices for band 7.
How do you describe a process diagram or a map?
Process diagrams and maps use the same 4-paragraph plan, but the detail paragraphs follow the order of the stages or the layout of the place. A process overview states how many stages there are and where it begins and ends; a map overview states the most significant change or difference between sites.
| Task type | Language to use |
|---|---|
| Process: sequence | first, next, once the pulp has been bleached, at the final stage |
| Process: passive voice | is collected, are heated, is then transported, can be reused |
| Process: purpose | in order to remove moisture, so that, which produces |
| Map: location | to the north of, on the eastern side, adjacent to, opposite |
| Map: change | was demolished, was replaced by, was converted into housing |
| Map: what stayed | remained unchanged, still stands, was retained |
For a natural cycle, say so and name the stage at which it restarts; for a map, describe one area at a time (north, centre, south) rather than jumping around the picture. Tense follows the time frame: past simple for dated data and past maps, present simple for processes and undated charts, and "will" or "is expected to" for projections and planned sites.
Worked example: a bar chart described at band 7 and above
Task (invented data): The bar chart shows the number of visitors, in thousands, to 3 museums in one city in 2010, 2015 and 2020. Describe the main features and compare the museums where relevant.
| Museum | 2010 | 2015 | 2020 |
|---|---|---|---|
| Science museum | 120 | 185 | 240 |
| Art gallery | 150 | 160 | 155 |
| History museum | 200 | 170 | 130 |
Model description (about 165 words)
"The bar chart compares annual visitor numbers, in thousands, at three museums in one city at five-year intervals between 2010 and 2020.
Overall, attendance at the science museum rose sharply over the decade while the history museum lost a large share of its visitors, so the two had swapped positions by the end of the period. The art gallery remained broadly stable throughout.
In 2010 the history museum was the most popular of the three, attracting 200,000 visitors, compared with 150,000 at the art gallery and just 120,000 at the science museum. Over the following five years the science museum's figure climbed to 185,000, whereas the history museum fell to 170,000, which narrowed the gap between them considerably.
By 2020 the science museum had doubled its original attendance to reach 240,000, almost twice the figure for the history museum, which had dropped to 130,000. The art gallery, meanwhile, fluctuated only slightly, peaking at 160,000 in 2015 before dipping to 155,000 in the final year."
Why the model earns its band, criterion by criterion
- Task Achievement. The introduction paraphrases the task; the overview names the rise, the fall, the crossover and the stable category without figures; figures appear only to support comparisons, and nothing is explained or judged.
- Coherence and Cohesion. The 2 detail paragraphs split the period in half, so the reader moves through time once. Referencing ("the two", "the gap between them") replaces repetition, and "whereas" and "meanwhile" link without sounding mechanical.
- Lexical Resource. Trend language is precise and varied ("rose sharply", "swapped positions", "fluctuated only slightly", "dipping"), and "almost twice" and "just 120,000" show control rather than rare words.
- Grammatical Range and Accuracy. Past simple sits alongside past perfect ("had swapped"), a relative clause ("which narrowed the gap") and participle clauses ("peaking at", "before dipping"), with no errors.
How do you finish IELTS Task 1 in 20 minutes?
A 20-minute Task 1 plan is 3 minutes of analysis, 2 minutes of planning the overview and the 2 groupings, 12 minutes of writing and 3 minutes of checking tenses, units and every figure against the chart. Task 1 is worth a third of the Writing band, so stop at 20 minutes and move to Task 2, covered in our Task 2 essay structure guide. The computer-delivered test shows a live word count (see what changes in computer-delivered IELTS), and the IELTS band score calculator shows how Writing combines with your other 3 components.
Common mistakes in IELTS Writing Task 1 Academic
- No overview. A report without a clear statement of the main features cannot score well on Task Achievement. Write it as paragraph 2.
- Listing every number in order. Quoting each value left to right is data entry, not summary. Group by trend or category and select figures for each.
- Adding opinions or reasons. "This is because people prefer science" is speculation and earns nothing. Describe what the chart shows.
- Under 150 words, or padding with the question. Short reports are penalised, and copied wording is not counted. Four paraphrased paragraphs with 2 figures each pass 150 easily.
- Mixed tenses or misread units. Past data in the present tense is an error in every sentence, and "thousands" read as "millions" makes every figure wrong. Check the time frame and axis labels first.
Frequently asked questions
How many words should I write for IELTS Writing Task 1 Academic?
IELTS Writing Task 1 Academic requires at least 150 words, and shorter reports are penalised under Task Achievement. A comfortable target for Task 1 is 170–190 words, enough for an introduction, an overview and 2 detail paragraphs within the 20 minutes recommended for the task.
Do I need a conclusion in IELTS Writing Task 1?
No, an IELTS Writing Task 1 report does not need a conclusion. A conclusion draws an opinion or implication from the data, and Task 1 asks only for a description. What a Task 1 report does need is an overview, a paragraph stating the main features without figures, placed immediately after the introduction.
Should I include every number from the chart in Task 1?
No, an IELTS Task 1 report should select figures rather than include every number. The task asks candidates to select and report the main features, so a report that lists all the data in order loses marks for Task Achievement and for Coherence and Cohesion.
Is a process diagram harder than a graph in IELTS Task 1?
A process diagram in IELTS Task 1 is not harder than a graph, but a process needs different language: sequencers such as "once" and "after that", the passive voice for actions, and the present simple tense. Many candidates practise graphs only and then meet a process or a map in the test.
Which tense should I use for a map in IELTS Writing Task 1?
For a map in IELTS Writing Task 1 that shows a place at 2 dates in the past, use the past simple for changes ("the farmland was converted") and the present simple for anything that remains. For a map comparing a present layout with a planned one, use the present simple for the current layout and "will" or "is to be" for the proposal.
Get your Task 1 reports marked against the four criteria
Fleydo's one-to-one IELTS preparation for adults and candidates aged 16 and over starts with a level and goal analysis and a personal study plan, taught by native English-speaking teachers who are Band 8.5+ certified IELTS specialists, with full mock tests in the real computer-delivered format, detailed feedback on every Task 1 you write, and flexible days and times. Book a free trial lesson, a short live one-to-one session with no obligation, and bring a Task 1 report you have already written.
