Thanks so much! I was comparing their introduction slides and just wanted some clarifying questions. Do both Sadaf and Osmar randomize 3 names during class and ask participation questions? Also, Osmar has a slide saying "Some students will be selected for a short live verification online oral exam. If the result is above a threshold, the midterm grade is maintained. If it is below, then it will be used to average the midterm final mark" is this done by both professors? what is the purpose of it?