 The different role a teacher takes on in the classroom, the observer. Finally the last role is explaining the teacher's task when he acts as an observer. During the course of a lesson, the teacher will wish to monitor what is going on in the classroom. This can give the teacher information as to how long an activity is likely to take, and how successful it has been. During oral communicative activities, the teacher may also want to make notes for correction or praise at a later stage. There are occasions when the teacher may also need to move in a little to hear spoken work or to look at writing in progress in order to monitor effectively. Thanks so much for watching. We are ITTT, the leading provider for TEFL and TESOL training courses. If you like this video, please subscribe by clicking the button down here and click on any of the videos here on the left for more interesting teaching tips for getting certified to teach English abroad and online.