the instructor
I’ve tried different techniques with challenging students to get the most out of them
the different techniques work well to reach out to those that need the extra help
With attention spans ranging from a few minutes to many minutes, it is best to recognize when you are in danger of loosing their attention, and then introduce a state change. This could range from many different things including standing up, or drawing a circuit on the board. Something targeted to switching their brains into another mode.