Playing games during a lecture hour: experience with an online blood grouping game.

THEORY LECTURES are boring and sleep inducing for students, and it is difficult to get their full attention during 1 h of lecture (7). The ability of students to concentrate diminishes 20–25 min after the start of the lecture (5). There is also a lack of active participation of students during theory lectures (10). In an effort to break the monotony of the lecture, an online blood grouping game was used to engage the students during a lecture on blood groups.