Study worked examples before solving problems independently

When learning something new, study solved examples first rather than immediately problem-solving.

Why it works

For novices, problem-solving without schema consumes working memory almost entirely on search strategies, leaving little for learning. Studying worked examples offloads the search process: the solution path is already given, so cognitive resources can be directed to understanding the structure. As schemas form, the worked-example advantage fades and problem-solving becomes appropriate — this is the "expertise reversal" transition.

How to do it

1. When beginning a new domain, collect and study fully worked examples before attempting independent problems.
2. For each example, pause at each step and ask "why this step?" rather than just following the sequence.
3. As the solution structure feels familiar, transition to completion problems (some steps given), then to full independent problems.

Evidence

The worked-example effect is one of the most replicated findings in instructional design: novices learn more efficiently from studying solutions than from independent problem-solving with equivalent time. The effect diminishes as expertise grows. (rct)

The benefit is specific to novices; intermediate and expert learners gain less or even show reversed effects. Worked examples must also be self-explanatory — poorly explained examples lose most of the benefit.

Sources

• Sweller & Cooper (1985), "The use of worked examples as a substitute for problem solving in learning algebra", Cognition and Instruction

Common mistake

Jumping to independent problem-solving at the start of a new topic as a sign of seriousness, when at that stage there is no schema to constrain the search and the struggle teaches little.