Most exercises implement the feedback technique.  This allows the facilitator to uncover possible reasons for any misconceptions or unsatisfactory understanding of new ideas and information.

How to Implement the Feedback Technique

1) The facilitators ask questions at the beginning of the exercise to learn to what extent the participants are familiar with the subject, and to introduce them to it.

2) At the end of the exercise facilitators ask questions to see what the participants learned from the class and to strengthen their understanding of the subject matter.