I will prepare before any classes that I would take. I believe each students have unique ability to understand concepts, knowing that will help to choose what mode is suitable for them. Sometimes, I have to go to the basics and teach them from there. Or some may need to visualize concepts, where I will use youtube videos about topics to make them clearer.
So it depends on each student that I am teaching and accordingly I will use my teaching techniques. According to my experience, nowadays students are back for 1 or less year due to Covid. So we may need to take more effort to make them understand about the previous topics. From the foundation, is the method to make them understand.

My subject of interest is physics, so I will need to go through interesting videos, problems, concepts, real life examples, derivations etc. I will be giving importance to any of these based on their understanding and their curriculum or syllabus.