Every teacher change roles during a lesson. These roles will be appropriate to the type of lesson, activities, lesson aims and the level and age of the learners. At different times we may, for example, act as a planner, an informer, a manager, a parent or friend, or a monitor. For example, when learners are doing a role-play, one role we have is to make sure that they are doing what we want them to do. This is called monitoring. When we present new language to the class, our role is to inform and explain to our learners. Here are some roles teacher often use.