re-write the following quotes and add some comments relevant to the problem

1. students need to see different teaching strategies in order to be able to pick up the one that suits their teaching environment

2. honestly speaking we cannot use any other method than lecturing because there are so many students in each session which does not encourage anyone to use another method

3. my lectures are attended by up to 400 students at a time. if I allow them to participate I cannot cover all the material in the curriculum