Plain English Meaning
The instructor shows the student how to do something so the student can watch and learn before trying it.
Full Definition
In the demonstration-performance training method, a teaching step in which the instructor performs a skill or procedure while the student observes, so the student can see exactly how the task is correctly carried out before attempting it themselves.
Context Anchor
Used in the demonstration-performance training method, where an instructor first shows a task and then the learner practices it.
Derivation
From the Latin demonstrare, meaning 'to point out' or 'to show clearly.' That original sense fits the training use directly: the instructor is pointing out how the task is done.
Why Pilots Care
A clear demonstration gives the student a correct mental model to copy. A sloppy or rushed demonstration teaches the wrong habits before the student has flown a single attempt.