What do students ask themselves during lectures?

Classroom interactivity is today considered to be one of the most important preconditions for successful lecturing. It is also often considered to be the main drawback of learning from lecture captures. In this article, the issue of live lecture and lecture capture interactivity is addressed from the aspect of students' question posing. During several lectures, students were asked to write down all the questions that occurred to them, but for any reason they would not pose them out loud. As the result, more than 250 questions were acquired during 18 hours of lecturing. Acquired questions were used to gain insight into quantity and types of questions that occur to students during a lecture, to try to increase lecture interactivity by answering relevant questions on the next lecture, and to analyze students' concentration during the course of the lecture. The potential of using acquired questions in order to generate additional lecture content for rich lecture captures used by Pyramidia tool, thereby increasing captured lectures' interactivity, was also investigated.