Our job in schools is to make sure that everyone has an opportunity to acquire what we consider to be a needed set of technology skills. The way I do it is always hands-on with minimal interference from myself. I've written tutorials which step the students through what I want to make sure they know. Those that already have the skills can skip through and get the job done in no time.
Newbies take varying amounts of time longer.
In the lab, they often lean across to ask each other for help, as Joy observed. Just to keep them on their toes, I give them exercises to do to either reinforce the skills they've learned or show me that they already have them. But then I remind myself that it took me quite a while to create the tutorials and that all my remote preparation for class is paying off. I think I should adapt them for use in the Elementary and Secondary classroom.