I can give you examples, but understand that I'm not saying that they can't understand what I mentioned, but they tend to not absorb fully and quite often get a shortcut of making concrete parallels that make it more tangible to understand, but still its often inaccurate.
I have experienced this difficulty with my own Calculus teacher, and some of her identicals (maybe?), who were able to perform all tasks they were assigned to but I could see their lack of understanding of the essence of it. I think Calculus (and Physics very often) is a good example of what I mean, and most people I know (especially from college) have a really hard time understanding it, which surprised me when I was presented it (It isn't difficult at all). Maybe some educational background may help in this case.
Another example you can find here
http://knowledgebase.ctmu.net/wp-con..._0929021-1.pdf
present this to them and watch their mind's functioning getting to a halt



Reply With Quote