Computerized training only really works for older students who are already highly motivated to learn a particular skill.
And true I don't like multiple choice for that reason.
However in my experience it's much easier to check from a distance if they are messing around or not with a computer. And computer won't easily allow them to continue with wrong answers. (Certain programs are better then others)
One on one is always better, but there is not room for a lot of one one time in most schools
Kids do that when they're forced to it. Anybody would do that.
Kids who are interested in what they're learning about won't do that.
Perhaps we shouldn't expect people (kids or not) to do so much irrelevant stuff.