After a walk break they reschool having him move forward off a whisper of an aid, and get stronger when he doesn't, and rewarding him when he goes forward.  They use the bend for the trot walk transition, and you can watch his understanding grow.  When they have trouble with the trot canter transition, they try it both directions and then Courtney advises some time on the lunge line to show him he can do the transition on the bit. They discuss plans for his further training and what will work to help him lower his hindquarters and learn his balance in the canter.