The Counted Walk is an "old school" Dressage exercise that I find to be highly overlooked and under utilized! It can be effective in improving the horse's balance and carriage, and to help him to better understand how to remain active behind even when going slowly.
For the horse, the learning happens on the release of the aid. That means if you don't release the aid, the horse will not learn.
"Don't take the tempo down without revving the engine." ~ Chris Bartle
I don't even think about aiming a young or green horse at a jump until I have them 100% in front of my leg on the flat. If you do, and the horse thinks about stopping, you will have no recourse, and will end up teaching him that
From Facebook fan Joan Dunlap ~ "Fix your position first... then the horse will adjust theirs."