3 questions in educations

Think of the five most effective teachers in you terms of instructional competence whom did have experienced as a learner what role your relationship with the teacher have in your perception of that teacher's effectiveness?

I think that students like to have a good introduction in classroom because that make them understand what they have to do in the classroom. Also, students will believe teachers for in everything. As well, teachers have to give students many examples so they have clear idea. Making all students in the classroom work and share their opinions so the teachers make sure their students are understanding. Beginning classroom with quick review is important to continue with new subject.

Why is it better to ask the question first and then call on someone to answer it?  Would there be any justification for doing it the other way around?

It is better because it gives students time to think and tell their opinions. However, call someone and ask him/ her make them nerves. As well, students maybe know the answer, but they get confused.

What are some things teachers can do to ensure that their explanation of content is clear?

I believe that teachers can do many things to make students have clear understanding. Teachers can repeat the important subject more than 3 times. I think students feel more inclined to learn if the lesson content is closely related to issues of daily life.