During the observation it is important to keep focused on your task and function. Remember that as a supervisor you are an observer, not a participant in the lesson. Avoid the urge to “jump in” and participate no matter how engaging the activity, or to “correct” a teacher mistake no matter how egregious it seems. Correcting a mistake or challenging the teacher in the eyes of the students. Factual or mathematical errors, chalkboard misspellings, or similar mistakes can be communicated to the teacher during the post-observation conference.