whenever you are tempted to come down hard on a student for any reason whatsoever, take a couple of minutes to speculate on the possibility that something in the background of that student's life has triggered emotions that are interfering with their motivation or their learning. Just a few moments of reflection on that possibility should be enough to moderate your tone and ensure that you are offering a response that will not send that student deeper into a spiral of negative or distracting emotions, thus potentially preventing future learning from happening in your course.