I volunteer each orchestra at one of the poorest schools in the district. One of the techniques I was taught was a thing called positive narration. You give the command, like "OK everyone sit down." A few kids will sit, then you start naming the kids who sit, like "I see John sitting, Jane is sitting..." and very soon most of the kids will be sitting.

It's freaking amazing.

__________________
You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman