A demonstration of a fact or situation is a clear proof of it. This is a clear demonstration of how technology has changed
Giving a model of the activity the group will be doing A clean demonstration provides a clear model and is one of the most important influences on how well the activity is carried out
A demonstration of something is a talk by someone who shows you how to do it or how it works. a cookery demonstration
A course of reasoning showing that a certain result is a necessary consequence of assumed premises; these premises being definitions, axioms, and previously established propositions
a visual presentation showing how something works; "the lecture was accompanied by dramatic demonstrations"; "the lecturer shot off a pistol as a demonstration of the startle response"
Describing "A-Effect," Brecht urged his actors to "demonstrate" the roles they played, rather than identifying with them in the mode of Stanislavsky System Acting-as-demonstration keeps the audience aware of both the actor and the character at the same time