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Concepts taught in large, lower-division computer science courses are carefully explained in standard textbooks. Thus we hypothesized that the classroom experience should not consist primarily of a restatement of those explanations by the professor. Instead, it should provide an opportunity for the students to learn through a process of conversation among themselves and with the professor. We were able to establish such a process in a sophomore-level course with an enrollment of 116 students. This change led to a doubling of the percentage of A and A- grades compared to historical values.
Waite et al. (Sat,) studied this question.