No teacher likes to be observed. I still remember my first teaching practices when I was training to be a teacher. It was terrifying, because I’d never done anything remotely like teaching beforehand, and then suddenly had to stand up in front of a group of strangers and help them understand a list of words. This was made even worse by having an experienced teacher observe me, along with three fellow trainees. Being in that position really makes you doubt yourself. Whenever you see them make a note, you think about what you must have just done wrong, and hesitate about what to do next.