Study a complete example before removing the support
A worked example shows a problem together with its solution and reasoning. For someone new to a method, this can make the structure visible without requiring every step to be invented at once. The example becomes more useful when you inspect why its steps fit, rather than only copying them.
Go deeper
Let a complete solution reveal the structure
A beginner facing an unfamiliar task may spend much of their effort deciding where to start. A worked example supplies a route through the problem, including the important decisions.
The purpose is to expose the method. A good example identifies the starting information, explains the chosen steps and shows how the result answers the question.
For instance, a sample paragraph revision can display the original sentence, the revision and the reason for the change. That reveals more than presenting the polished sentence alone.
Worked examples are particularly useful when knowledge is still limited. As skill develops, more independent practice becomes important. Studying the route is a beginning, not evidence that the learner can already navigate a new case alone.