megank
It looks as though everyone in the northern hemisphere is on vacation, so just to get things going I'm butting in, though I have next to no formal knowledge of American civilisation. It's just that I've had the time, which you may not have had, to have a look through what the net has to offer on the subject.
First of all, I assumed that you meant "North American" and specifically "US" rather than Canadian civilisation; then I searched "American culture" rather than "civilisation" (using Google).
I think the best full outline that I found was at
www.art.man.ac.uk/ENGLISH/staff/pk/teac ... tline.html
It also offers a good reading list (in order of difficulty) for each unit.
Then, at www-writing.berkely.edu/TESL-EJ/ej11/r2.html there is a t review of a text, Discovering American Culture, designed for teaching ESL students (US$15.95; UK 12 pounds95 pence). It also has a teacher's manual (for about the same price!)
You'll find another course outline (for a US summer course) at
www.wam.umd.edu/~ewhite/syllabus.html
Two other sites offer some useful contacts who might be generous enough to give you some pointers:
http://webct.bcc.ctc.edu:8900/public/eslon120a/
http://sun.simmons.edu/libraries/instru ... lture.html
I hope I haven't been trying to "teach you to suck eggs"; but we had to do something to provoke some people who actually know something about the subject and feel obliged to set you on a better course.
Anyway, you'll find all these sights if you simply ask Google "American + culture + course".
Happy hunting. Hope you can get a lively course together without too much stress.
Norm.