That would also work, if you don't mind splitting up your one real-world course, into 10 Moodle courses.
I guess it depends how big each section is. If they are all huge, then a separate course for each is probably best, if they are tiny, than doing them as different topics in one course is best. In between, you could probably go either way.
Things that might sway you one way or the others is how you track enrolments and grades and other things like that.
Don't be afraid to experiment; don't be afraid to continue asking questions in these forums; and other good places to learn more are http://docs.moodle.org/ and some of the Moodle books that have been published (look in the support menu above).