Observation is one of the first and main aspects of the learning process. If a student is confused during this phase of our teachings, then the confusion will carry on to all the other parts. So it's really important for them to understand what we are trying to present to them. Hence demonstration holds a key to the lock of many students learning ability. We need to give a 120% in this part of the process so students will have a good basic knowledge of the topic going to be covered.