Ok i do not know where to post this so i posted it here.

In my advanced guitar class we have
done a C major scale type thing goes

C D- E- F G7 A B* C


going down the neck and we just added to that scale the octaves to each of those on the scale so the C major then the next octave higher C then D and octave D and continued.
Well then he said we were going to play Am and F and everyone was like picking and doing **** down by like the 12th fret and ****.
Where are these chords down there?