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How to Write a Strong Essay Introduction

Academic Writing Tips 29 September 2026

How to write a strong essay introduction: the 5-part funnel (hook, context, focus, thesis, roadmap), a full worked example, common mistakes and a checklist.

Infographic

The introduction funnel

Move from broad to specific in five moves

  1. HookA relevant opening sentence that draws the reader in.
  2. ContextEssential background and key terms.
  3. FocusNarrow to the specific issue you'll address.
  4. ThesisYour clear, arguable answer to the question.
  5. RoadmapOptional preview of your main points.
Aim for about 10% of your word count.Collepals.com

Your introduction is your first chance to show the marker that you understand the question and have a clear argument. A strong introduction sets up everything that follows; a weak one leaves the reader confused before your essay even gets going. Here's how to write a strong essay introduction, step by step, with a full worked example.

What a Strong Introduction Does

  • Engages the reader with a relevant opening.
  • Gives just enough context to understand the topic.
  • Narrows down to the specific focus of the essay.
  • States a clear thesis that answers the question.
  • Optionally, previews how the essay is organised.

How Long Should an Introduction Be?

A good guide is around 10% of your total word count. For a 1,500-word essay, that's about 150 words: usually one paragraph. For a 5,000-word essay, it might be 400 to 500 words across one or two paragraphs.

Step-by-Step: Writing Your Introduction

Step 1: Start with a relevant hook

Your first sentence should draw the reader in while staying firmly on topic. Options include a striking statistic, a contrast or a key debate. See 10 effective ways to start an essay for ideas.

Step 2: Provide context

Give the background your reader needs. This might include a brief history, key definitions or the current state of debate. Keep it short: only what's essential for understanding your argument.

Step 3: Narrow your focus

Move from the general topic to the specific issue your essay addresses. This is the "funnel" in action: from broad to narrow.

Step 4: State your thesis

Your thesis is the most important sentence in your introduction. It should directly answer the essay question and take a clear, arguable position. Learn how in how to write a thesis statement.

Step 5: Add a roadmap (optional)

In longer essays, a sentence outlining the order of your main points helps the reader follow your argument. Some disciplines expect this; others prefer a lighter touch.

Worked Example

Essay question: "Evaluate the effectiveness of remote work for knowledge workers."

Introduction (about 140 words):

"Remote work, once a rare perk, became a standard arrangement for many knowledge workers after 2020. [Hook and context] Supporters argue it boosts productivity and wellbeing, while critics point to weaker collaboration and blurred work-life boundaries. [Context: the debate] This essay focuses on how remote work affects individual productivity and team performance in professional settings. [Focus] It argues that remote work improves productivity for most knowledge workers, but only when organisations provide clear communication systems and structured opportunities for collaboration. [Thesis] The essay first examines evidence on individual productivity, then considers effects on teamwork, before evaluating the organisational conditions that determine success. [Roadmap]"

The labels in square brackets are just to show the structure. Leave them out of your own writing.

Common Introduction Mistakes

MistakeFix
Starting too broad ("Throughout history...")Open close to your actual topic
Too much backgroundInclude only what the reader needs
No clear thesisEnd with one or two sentences stating your argument
Thesis doesn't answer the questionReread the question and check your thesis responds to it
Introducing evidence in detailSave evidence and citations for body paragraphs
Promising what the essay doesn't deliverRevise your introduction after writing the body
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Should You Write the Introduction First or Last?

Many writers draft a rough introduction first to guide them, then rewrite it once the essay is finished. Arguments often shift during writing, and your introduction must match what your essay actually says.

Introduction Checklist

  • The first sentence is relevant and engaging.
  • Background is brief and essential.
  • The focus is clear and specific.
  • The thesis directly answers the question.
  • The roadmap (if used) matches the order of the essay.
  • It's roughly 10% of the word count.

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