IELTS Academic Task 1: The Pie Chart Strategy
The Pie Chart is a classic visual in the IELTS Academic Writing test. Unlike line graphs that show trends over time, pie charts are designed to show how a “whole” is divided into “slices.”
Your mission is simple: Compare the size of the slices and report the most significant differences. You have 20 minutes to write at least 150 words.
The Golden Rule: It’s All Relative
A pie chart represents 100% of a total. Whether that total is a budget, a population, or energy consumption, your job is to explain how the parts relate to the whole.
- Don’t just list numbers: “Category A is 20%, Category B is 30%…” (This is Band 5.0).
- Do compare: “Category B accounts for a significantly larger share than Category A.” (This is Band 7.0+).
The 4-Step Attack Plan
Use this structure to organize your report clearly.
Step 1: Introduction (1 Sentence)
Paraphrase the question.
- Question: “The charts below show the breakdown of energy sources in France in 1990 and 2010.”
- Your Intro: “The two pie charts illustrate the proportion of different energy sources used in France in two separate years, 1990 and 2010.”
Step 2: The Overview (The “Big Picture”)
Summarize the main features. Which slice is the biggest? Did any slice shrink or grow dramatically?
- Example: “Overall, nuclear power remained the dominant energy source in both years. However, while coal consumption dropped significantly, the use of renewable energy saw a noticeable increase.”
Step 3: Body Paragraph A (The Major Slices)
Describe the largest segments. Group the categories that dominated the chart.
- Focus: Mention the specific percentages and how they changed (if there are two years).
Step 4: Body Paragraph B (The Minor Slices)
Describe the smaller segments. Group the categories with the lowest percentages.
- Comparison: Use language like “a small minority,” “a negligible amount,” or “the least significant.”
Essential Vocabulary for Pie Charts
To get a high score, you must stop repeating “percent” and start using the language of fractions and proportions.
Replacing Percentages with Fractions
This is the easiest way to boost your Lexical Resource score.
| Percentage | Fraction Phrase |
| 73% – 77% | Nearly three-quarters / Approximately three out of four |
| 50% | Exactly half |
| 48% – 52% | Roughly half / Just over half / Just under half |
| 33% | A third / One-third |
| 25% | A quarter / One in four |
| 20% | A fifth |
| 10% | A tenth / One in ten |
| 5% | A small fraction / A negligible amount |
Verbs for describing “Slices”
- Account for: “Oil accounted for 30% of the total.”
- Make up: “Renewables made up the remaining 20%.”
- Constitute: “Coal constituted a significant portion of energy use.”
- Comprise: “The sector comprises three main categories.”
Comparative Language
- The largest proportion: “The vast majority of people preferred…”
- The smallest segment: “Only a tiny minority chose…”
- As big as: “The slice for nuclear power was twice as big as that for coal.”
- More/Less: “Significantly more people voted for X than for Y.”
Dealing with Multiple Pie Charts: How to Compare Two Charts (Static vs. Dynamic)
Often, you will see two or three charts (e.g., Year 1 vs. Year 2, or Country A vs. Country B). You must identify if they are comparing Time or Categories.
Scenario A: Two Years (e.g., 1990 vs. 2010)
This is a Dynamic task. You must describe changes.
- Vocabulary: “The proportion of coal increased…” / “The slice for nuclear power shrank…”
- Sentence: “While the popularity of coffee rose to 40%, tea consumption dropped by half.”
Scenario B: Two Countries (e.g., France vs. Germany)
This is a Static task. You must describe differences.
- Vocabulary: “Higher than,” “Lower than,” “Twice as big as.”
- Sentence: “The percentage of people renting homes in France is significantly higher than in Germany.”
Common Grammar Traps
- “Percent” vs. “Percentage”:
- Number + Percent: “10 percent” (Never “10 percentage” or “10 percents”).
- The word alone: “The percentage of people…” (Never “The percent of people”).
- Prepositions:
- At: “It stood at 50%.”
- By: “It increased by 5%.” (From 10% to 15%).
- To: “It increased to 15%.” (The final number).