Glider insider,
Depends on the students you are teaching, is english their first language ?
I felt more comfortable when I learnt to shut up and just use key words that you and the studnet could easily relate to, on finals I just use three phrases, aim point centre line, airspeed, in the landing, level idle flare.
For some students also get rid of the flare words and ask them to try and fly level forever above the runway, has the same effect as flaring, but they dont tend to think its an extra action and balloon.
Z