UD likes to revisit, via her category CLICK-THRU U, the ongoing glories of online teaching.
After directing students to center themselves, keep looking directly into the camera, and maintain at all times an “attentive, present, and professional” demeanor, the instructor (see this post’s title) coaches her class to regularly scrutinize their own visage in case their professional facial expression flags.
UD suggests that if this professor remains unsatisfied with the degree of student cooperation, she refer them to any ten or twenty pages of Orwell’s 1984, with special reference to Winston Smith.