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Writing PromptYear 13Level 3 · Challenge

Free Year 13 Expository Writing: Explaining a Complex Idea Clearly

A senior writing worksheet on expository writing, the form that explains rather than argues or narrates. Students examine an original model explaining why people procrastinate, then learn the key moves of clear explanation: challenging a common misconception, defining terms, walking through a process step by step, using an analogy, signposting and drawing out implications. They plan and write their own 600–800-word expository piece on a complex idea, with a planning scaffold and rubric.

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Year
Year 13
Subject
English
Topic
Writing
Difficulty
Level 3 · Challenge
Estimated time
60 minutes
Curriculum
New Zealand Curriculum
Questions
12
Answers
Included, with working
Format
PDF (A4), print or complete online

Students will practise

  • distinguishing expository writing from persuasive and narrative writing
  • opening with a misconception or question
  • explaining a process step by step
  • using analogy and examples to make abstract ideas concrete
  • signposting and drawing out implications

Curriculum: New Zealand Curriculum. We show specific outcome codes only where they have been verified against the official curriculum document.

What's next?

Completed: Expository Writing: Explaining a Complex Idea Clearly

More resources for this topic are coming soon.

How to use this writing prompt

  1. Print the PDF or complete it on screen. Write the student's name and date at the top.
  2. Read the instructions for each part together before starting. Encourage working to be shown.
  3. Mark with the answer sheet. Use the model answers and success criteria as a guide rather than a single right answer.
  4. Record the score, celebrate what went well, then follow the "What's next" suggestion.

Common questions

Who is this writing prompt for?

Year 13 students (typically ages 17–18) working on writing. It is pitched at level 3 · challenge.

Are the answers included?

Yes. The PDF includes a full answer sheet with model answers and success criteria where there is more than one good answer. You can also view the answers online.

How long does it take?

About 60 minutes for 12 questions. Short, regular sessions work best: two or three a week beats one long one.

Do I need to sign up to download?

No. Click Download Free PDF and it opens immediately. It is free for personal, classroom and homeschool use.

What should we do next?

Explore more Year 13 english resources.

Preview

Success TutoringWorksheetsYear 13 · English · Writing

Expository Writing: Explaining a Complex Idea Clearly

Name

Date

Score /

A good explanation answers the question a curious reader would ask next before they have to ask it.

Part A: Study the model

Read the model extract, then answer.

Model expository extract: Why Do We Procrastinate? (original, approx. 300 words)

Most people assume that procrastination is a problem of time management: if we only planned better, we would stop putting things off. Psychologists who study the habit increasingly disagree. Procrastination, they argue, is less about managing time than about managing feelings.

Consider what happens when you sit down to begin an essay you are dreading. The task triggers an unpleasant emotion: perhaps anxiety about doing it badly, boredom, or confusion about where to start. Your brain, which is wired to seek relief from discomfort, offers an escape. You check your phone, tidy your desk or decide that you work better at night. The relief is instant, and so the brain learns that avoidance works. The essay, of course, is still waiting, and now the deadline is closer, which makes the feeling worse.

A useful way to picture this is as a loan. Each time we procrastinate, we borrow a little comfort from our future selves, and the interest is paid in stress. Researchers have found that people tend to think about their future selves almost as if they were strangers, which makes it easier to hand them the bill.

This explanation also accounts for something that puzzles many procrastinators: why the habit often strikes hardest on the tasks that matter most. The more important a task feels, the more anxiety it can carry, and the stronger the urge to escape.

If procrastination is emotional, then the most effective strategies are emotional too. Breaking a task into a first step so small it feels almost silly (open the document; write one sentence) lowers the emotional cost of starting. Treating yourself with understanding after a lapse, rather than harsh criticism, turns out to reduce future procrastination, because self-criticism simply adds another unpleasant feeling to escape from.

1.What is the main purpose of the model extract?
  1. Ato entertain with a story
  2. Bto persuade readers to buy a product
  3. Cto explain a complex idea clearly
  4. Dto describe a place
2.How does the model open?
  1. Awith a statistic
  2. Bby stating and then challenging a common misconception
  3. Cwith a quotation from a famous writer
  4. Dwith a personal anecdote
3.The second paragraph explains a process. List its stages in order.[3 marks] (answer space)
4.Identify the analogy in the model and explain how it helps the reader.[2 marks] (answer space)
5.How does the fourth paragraph show the explanation's usefulness?[2 marks] (answer space)
6.How does the final paragraph move beyond explanation?[2 marks] (answer space)

Part B: Plan your explanation

Complete each step for your own topic. The answers show one possible plan.

7.Planning step 1, topic and question: Choose a complex idea and phrase it as a how or why question. Options: Why do songs get stuck in our heads? How does gossip spread? Why do we find some things funny? How do habits form? Or choose your own.[1 mark] (answer space)
8.Step 2, misconception: What do many people wrongly assume about your topic?[1 mark] (answer space)
9.Step 3, process: Outline the process or mechanism you will explain in three or four stages.[2 marks] (answer space)
10.Step 4, analogy: Write an analogy that will make your explanation concrete.[1 mark] (answer space)
11.Step 5, implication: What follows from your explanation? Why should a reader care?[1 mark] (answer space)

Part C: Write

12.Write your expository piece (600–800 words) explaining your chosen idea to an intelligent general reader. Open with a misconception or a question, define any key terms, explain the process step by step, use at least one analogy and two examples, signpost clearly, and finish by drawing out an implication.[20 marks]
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Preview — the PDF contains the full resource and answer sheet.

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About this resource

Created by
Success Tutoring
Last reviewed
1 October 2026
How it was made
Written by our team

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