In the course of a lecture, especially in lecturer-centred teaching situations, the concentration of the students decreases increasingly.
On the other hand, an interruption with a question directly related to the students that stems from the current subject matter can help. Questions that aim to localise a region, assess regional differences or similar are easy for students to answer and provide an impulse that initially points away from the subject matter.
The different topic, the opportunity to express oneself and thus be active provide intensive stimulation. This clear form of interruption has the effect of improving students' concentration.
