Many educational activities, such as training sessions, take place in which valuable exercises are run, but they lack debriefing. In a non-formal education context, an experiential volunteer-based learning context, the debriefing is indispensable!

Without it participants might not learn anything (or profit a lot less from the exercise than they actually could).
Debriefing is an essential element of training and it is necessary for facilitators to know its structure and principles.

After every educational exercise a facilitator needs to organise participants to discuss the experience that they have just undergone at each stage of the exercise.