Teachers can use different strategies for teaching purpose. When teacher teaches the students of small kids she will use politely word and tells students to speak after them. But when teacher teaches students of 6-10 she will explain them in mother tongue as well as in English so people can understand properly.

But in mostly college teaches uses projector to teach students because college students are being treated to explain from books only and so teaches uses projector to explain the topic instead of referring books. In this method teaches saves his time and also it covers the syllabus and also students give concentration on projector and they understand properly.