I have been teaching maths since 2015 from sixth grade to prep, online and at home, in France and abroad (I lived in Tokyo for 3 years where I helped French high school students). The student is at the center of the class, and there should not be any "silly" questions. I adapt to the needs of the student, but I always suggest that we first review the course (with my explanations) before doing the exercises or MDs. For the preparation for the DS, I like that we practice on DS that I bring in relation to the topic studied.