Use examples that reveal the structure

The idea

Concrete examples make an abstract principle easier to inspect. Comparing different examples helps separate the underlying relationship from accidental details. A good example explains why it fits and includes a boundary case that looks similar but works differently.

Worked example

To teach opportunity cost, a tutor uses a room booked for one of two events and a student choosing between two activities. The settings differ, but both involve a scarce resource and a best alternative forgone. She then presents a case where an unused room has no feasible competing use. Learners discuss why assigning an imaginary alternative value would be misleading. The examples train recognition rather than memorization of the room story.

Use it carefully

A vivid example can become a trap if learners remember surface features instead of the rule. Include varied contexts and ask learners to explain the mapping. Examples also simplify reality, so label invented quantities and omitted conditions. One successful illustration cannot establish a general empirical claim. Use examples to clarify a concept, then use appropriate evidence to assess whether it describes the world.

RETRIEVE. REASON. REMEMBER.

Knowledge check.

Choose one answer for each question, then check your reasoning.