Well, I applaud your efforts...and if I had the time, and the full-time tenure-track employment, I probably would do the same.
But I have to say that this group of students over the summer had a large number of 'foreign-raised' students, mostly from Asia (of 40 students, 11 from Asia, one from Central Europe). The Asian students honestly did fine...they either wrote that they went to "South America" or looked at a map at some point. It was the American-raised students who pretty much failed that topic. And when I talked to some of them privately, they don't recall the last time they looked at a map...they just never thought of it as being 'necessary' in life.
Perhaps I find this deplorable because in my family, with my dad's big interest in history and geography, we were raised to learn and (somewhat) enjoy the wonders of those subjects. And while my brothers do not dive head-long into history and geography nearly as much as I do, they can still discuss the 'basics' of Europe and Asia, at the very least. Furthermore, if they're so moved...they look at a map!!! When I lived in Texas, there were several people who knew that California was on the coast...just which coast, they couldn't figure out which coast. Seriously...with as much TV being set in California...ugh, I give up.