Join Date: Sep 2007
Location: Washington State
You can also make them focus on a certain pair of legs (the horse's front or rear) and recite 'left, right, left, right, left right' as each takes a step. One of my instructors had me doing this at the walk to gain more awareness of when the hind legs were coming forward to take a step.
If you want the students to get a better sense for posting the trot at a steady pace, you can use a metronome and/or sing a song with a steady clear beat. (The witch song from Wizard of Oz is one I've heard suggested for this -- "Ding dong the witch is dead, which old witch, the wicked witch, ding dong the wicked witch is dead.")