There must be an element of curiosity, anticipation or surprise associated with the demonstration
It permits the learner to acquire a gradual, orderly and sequential progression from a broad and relatively simple level to one of much greater depth and complexity
It makes possible immediate feedback, thereby promoting the learner's motivation
The other students will listen to the presentation, make notes of his references and follow up by further reading
Each panelist prepares a sub-part in a subject in some depth and then presents it before the class
The panel chairman participates to keep the discussion to the point, to invite silent class members to talk or to give an occasional summary to suggest how the discussion has progressed