Expository presentation is a lecture, presentation or telling strategy used during instruction.
The teacher is in control of presenting the subject matter and directs the students through the lesson. A rule is presented with an example and then practice is provided. The teacher focuses the students attention on the key points of the subject and may use graphics, diagrams, or other representations to elaborate on the subject. Examples include pictorial relationships, application of the rules, context through historical information, and prerequisite information. Examples are provided to give contextual elaboration and to help students see the subject matter from many different perspectives.