A demo class is a class that is given by a teacher in a class as introductory teaching. In this teacher came up with a chapter revised so that he can teach the same chapter to a particular class and get good remarks in return. This demo class is led by students as the final decision is entirely based on the student’s overall comments. The principal and HOD of the subject also attend the demo class to check the confidence of the teacher, way of handling the class, subject knowledge, and many more.
If you are also going to give your demo class soon so it is much advised to prepare in advance some topics as the new environment gives you some anxiety. It is also advisable to get good comments which increase the chance of your job.
Many videos are available to prepare for the demo class watch it out and have a faith in yourself and your teaching method.