Worked Examples: Teach Writing by Showing, Not Telling
The truth is, you begin the “Argumentative Paragraph” chapter with two precise definitions and a diagram. The reader reaches page twenty and still doesn’t know how to construct the first sentence tomorrow morning when they sit down at their desk. The problem is not a lack of information; it is the absence of a worked example. A worked example, instead of describing a skill, shows the skill itself in action: the problem statement, the steps, and the reason for choosing each step.
In this article, we’ll look at where this technique came from, what components make up an effective example, and how to write it in a textbook so that the reader moves from watching to writing.
The Worked-Example Effect: A Discovery from the Cognitive Load Laboratory
John Sweller and his colleagues noticed in the 1980s that students who carefully read several worked examples instead of solving problems solved similar problems faster and with fewer errors. The explanation for this result is simple: when novices encounter a new problem, they spend much of their limited working memory on trial and error and on going back and forth between the problem statement and the goal, leaving nothing for learning. Worked examples eliminate this costly stage and place an expert’s path before the novice’s eyes.
Barak Rosenshine, in “Principles of Instruction,” counted worked examples as one of the ten principles of effective teaching, and Alexander Renkl showed that these examples work only when the reader forces themselves to explain the steps—something called “self-explanation” in the research literature. In other words, a worked example is not a text; it is a learning situation.
The Anatomy of an Effective Worked Example
In a textbook, a worked example is made up of five components, and omitting any one of them cuts its effect in half:
- A real problem statement: not “Example: an ambiguous sentence,” but a real, slightly rough sentence that the reader also sees in their own work.
- Numbered steps: each step is a specific decision, not a general recommendation.
- A why question alongside each step: “Why did we find the main verb?” This question moves the reader from imitation to understanding.
- An abstract rule at the end: one or two lines that turn a particular experience into a transferable principle.
- Visual marking: bolding the key phrases of the example so the eye can see the pattern.
A Concrete Example: Rewriting a Lifeless Paragraph
Joseph Williams, in “Style: Lessons in Clarity and Grace,” has a method that has been a model for writing guides for years: first he presents a flawed sentence, then asks the reader to identify the flaw, and only after that shows the corrected version. This same pattern can be used in editing chapters:
Problem statement: “The approval of the new regulation, which took place with committee members present and after numerous expert reviews, led to a change in the reporting procedure.”
- Find the real subject: “approval” and “reviews” are two nouns, and only one of them carries informational weight.
- Identify the main verb of the sentence: “led to ….”
- Decide which relative clause advances the meaning and which is merely peripheral.
- Rewrite: “The new regulation, after expert review, changed the reporting procedure.”
You can see that step four is not a secret; if the reader has done steps one through three, they will arrive at it themselves. This is the difference between a worked example and an “answer key.”
Effective Example vs. Half-Baked Example
| Feature | Effective Example | Half-Baked Example |
|---|---|---|
| Problem statement | A real, slightly messy text | A tidy example that never occurs in the real world |
| Steps | Short, numbered, and easy to imitate | Several paragraphs of abstract explanation |
| Rationale | Alongside the step itself, about one sentence long | Separate and at the end of the chapter |
| Extraneous load | No repetitive explanation or irrelevant image | The same text repeated in three formats |
| Ending | A rule that carries over to the next chapter | Open ending, without a summary |
Step Fading: From Complete Worked Example to Independent Practice
If a worked example always remains complete, the reader becomes dependent on it. The solution is what Renkl called “fading,” in which steps are gradually reduced:
- Stage one: a complete worked example with all steps.
- Stage two: a completion problem; the problem statement is given, and the last two steps are omitted.
- Stage three: a partially solved problem with a brief hint about the first step.
- Stage four: independent practice; here the book provides only the problem statement and the evaluation criteria.
These four stages can be spread across three chapters: examples in the opening chapter, completion problems in the middle chapter, and independent practice in the final chapter. If all the examples are gathered in one chapter, the reader is left empty-handed in the practice chapter.
Three Mistakes That Undermine the Worked-Example Effect
- Redundancy: Repeating the exact text of the example in the margin or a footnote. When the same information appears twice in two formats, working memory becomes occupied with matching them instead of learning.
- Split attention: The example table on the facing page and its explanation on the previous page. The reader is forced to keep turning pages, and their chain of reasoning is broken.
- Expertise reversal effect: Slava Kalyuga showed that for a knowledgeable reader, a worked example creates more cognitive load than independent practice. So the place for examples is the beginning of the learning path, not throughout the entire book.
The principle is simple: a worked example does not replace practice; it only shortens the starting point of practice.
Conclusion
Writing a worked example comes before writing the explanations. First choose a real task, solve it step by step while giving the reason for each step, and then see which step is clear enough that you can remove it so the reader can construct it themselves. These small omissions fill the gap between watching and skill.
The test is simple as well: if, after reading the example, the reader can rewrite their own text according to the same pattern, the example has worked; if they only say “that was nice,” you have written just another description.
