I did recently implement a strategy that I thought of while reflecting at the workshop we attended a month ago. To help my students study for their comps this week, I recorded video of top students solving problems likely to appear on the exam. I then placed the videos on youtube and as homework asked all students to write at least one comment on two of the videos asking any questions that they may have or thanking the scholar for making the video. We'll so how it goes (comps are tomorrow) but scholars seemed to really love it! See the attached picture!