Hey Blackmail,
you seem to have taken nav lectures a very long time ago, as it seems that modern flying schools just browse over these concepts.
No mistake of course, just that little freudian slip before.
While I am at it, I never found a better way to teach these "magic thingies" than pulling strings on a globe.
Then you have to put the winds and the politics to explain why we so seldom fly those (not so) great Circles.
Merry X-mas.