Each week, students attend a 50-minute tutorial session where students work in groups of three or four and answer questions on a worksheet that emphasizes both qualitative and quantitative reasoning and requires explanations. Facilitators interact with the groups by asking guiding questions to help students work through difficulties in their own thinking. In this way, students are responsible for actively constructing their own understanding. This is in contrast to the more traditional model where students listen passively while instructors attempt to transmit knowledge by telling students what to think.

In this clip, one student makes an incorrect prediction that a constant force corresponds to a constant velocity. The facilitator guides her and her group, through their own words, to the understanding that a constant force indicates a constant acceleration, which means that the velocity is changing linearly.

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