Worked Examples

A worked example shows a complete solution step by step before learners attempt a similar task on their own. Instead of "here is the problem, solve it," the message is "here is how an expert solves this problem, now try a similar one." The technique traces back to John Sweller's Cognitive Load Theory and is one of the most thoroughly studied instructional design techniques in existence.

#A concrete example from practice

When onboarding a new hire to a CRM system, a manager first demonstrates on screen, step by step, how to correctly create a new lead, categorize it, and assign it to a sales rep, explaining the reasoning behind each click. Only afterward does the new employee handle a similar, but not identical, case on their own. The difference from "just let them try it": the cognitive capacity that would otherwise go into trial and error is instead available for understanding the process itself.

#What the research shows

A meta-analysis of worked examples in mathematics education, covering 55 studies and 181 effects, found a moderate advantage over less guided learning formats (effect size g = 0.48). The effect was larger for correct, complete examples than for flawed or incomplete ones. A refinement of the technique, called subgoal labeling, further breaks an example into named sub-steps, such as "Step 1: verify the lead source" instead of one continuous sequence without intermediate headers. Studies in introductory programming courses show that subgoal labels are associated with lower dropout rates.