In my class, what often happens is that some smart students do problems faster than other students. And they are actually going well ahead of my course plan. While I am teaching to other students a certain chapter, they are doing the next chapter to it. And in the meantime, while I am guiding the weak students, they ask me the question which they find difficult to do from the next section.
I kind of find that thing disturbing. They are calling me all the time and I am unable to give my time to other students. What should I do in this situation? Should I tell them to stop going ahead of me? If I tell them so, what other things can I tell them to do while I am teaching the weak students?