Even in the context of "helping", some people have to show they could teach the class. They do this by asking leading questions, pointing out any mistake, no matter how pedantic, and other obnoxious, interruptive actions.
Students quickly recognize the adversarial relationship and, depending on how the teacher responds, either lose confidence in the teacher or tube out the cock fight.
As the teacher, in a short-term environment (like a substitute or a half-day seminar), you have to shut that person down unequivocally. In a longer lasting environment, give that person a chance to teach.
Students quickly recognize the adversarial relationship and, depending on how the teacher responds, either lose confidence in the teacher or tube out the cock fight.
As the teacher, in a short-term environment (like a substitute or a half-day seminar), you have to shut that person down unequivocally. In a longer lasting environment, give that person a chance to teach.