Working without a Coursebook...

Today, my group have to do a presentation regarding the topic 'Working without a Coursebook'. Coursebook is kind of book that is used as guidelines and reference for the teacher to rely on. It is very important for the teacher to have a coursebook with him when they're teaching. However, it is still possible for the teacher to work without a coursebook. Let me explain further..
There are 3 main things to be considered when a teacher is teaching without a coursebook to refer on which are deciding what to include, what does a child use language for in each of these areas and choosing starter phrases / vocabulary / structures. The teacher can also involve the children in the planning of the content of the lesson. The children also can benefit from this activity since they may discover about how language and communication work generally. Last but not least is deciding how frequent and how long language lessons should be. The best duration is not too short and not too long. As in Malaysia, we have 30minutes for single-period lesson and 1 hour for double-period lesson. I think that it just an ideal duration.