IELTS Writing Task 1: How to Describe a Graph, Chart or Process Step by Step

Task 1 comes before Task 2 in the IELTS Writing paper, but most students prepare for it last — if at all. That’s a mistake: Task 1 is worth the same as Task 2, takes less time to master, and rewards a formula you can learn in an afternoon. Here’s the structure examiners are actually trained to look for.

What Task 1 is really testing

You’ll be given one visual — a line graph, bar chart, pie chart, table, process diagram, or map — and asked to “summarise the information by selecting and reporting the main features, and make comparisons where relevant.” Read that instruction again, because it’s the whole task. You are not asked to explain why the data looks the way it does, and you are not asked for your opinion. You’re asked to select, describe, and compare. Candidates who argue or speculate about causes lose marks for Task Achievement, even when their English is excellent.

You have 20 minutes and need a minimum of 150 words. In practice, aim for 170–190 — enough to cover the data properly without running out of time for Task 2.

The four-paragraph structure that works for almost any chart

Whatever visual you’re given, the same shape holds up:

• Paragraph 1 — Introduction: one sentence, paraphrasing the task.
• Paragraph 2 — Overview: two to three sentences naming the main trends, with no numbers.
• Paragraph 3 — Detail group 1: the first half of the data, with specific figures.
• Paragraph 4 — Detail group 2: the rest of the data, with specific figures and comparisons.

Paragraph 1: paraphrase, don’t copy

Examiners read the same prompt dozens of times a day, so copying it word-for-word is both lazy and penalised. Swap the vocabulary instead:

• Prompt: “The chart shows the number of tourists visiting three countries between 2000 and 2020.”
• Your version: “The bar chart illustrates how many visitors three countries received over a twenty-year period, from 2000 to 2020.”

State what the visual is (chart, graph, table, diagram), what it shows, and the time frame or units, if given.

Paragraph 2: the overview — the paragraph that decides your band

This is the single most important paragraph in Task 1, and the one most self-taught students skip entirely. The overview states the two or three biggest, most obvious patterns in the data — with no numbers at all. Numbers belong in the body paragraphs; the overview is where you step back and say what the data means in general.

For a line graph showing rising and falling trends: “Overall, X increased considerably over the period, while Y experienced a steady decline. Z, by contrast, remained relatively stable throughout.” For a bar chart comparing categories: “Overall, Country A received significantly more visitors than the other two countries, and this gap widened over time.” Band 7 descriptors specifically require “a clear overview” — examiners are trained to check for one, and its absence caps your score regardless of how good the rest of the essay is.