This is only from my 5 months of teaching - but right from the beginning I teach how to travel on the keyboard, by picking up from the wrist and letting the fingers hang, getting to the new place to play before actually playing. I do exercises that just go 1-2-3-4-5 and let the wrist form a smile, I do two note slurs, 1-2, 1-3, 1-4, etc, with a down up action. The pieces that I give reinforce this, too. I teach wrist staccato pretty early, like bouncing a ball, and have them do exercises. At the same time, we're doing a lot of flash cards and rhythm drills. Then I try not to do too many things in the middle C position - so that they don't get stuck there.
Pizno