Replying to Calling all freestyle instructors.

I coach a group of kids freestyle most weeks. Now apart for simple things does anyone have some decent exercises to keep these kids entertained? They get bored real easy and I find it hard to keep there attention some times.

They are all decent skiers, but all varing freestyle ability. If anyone has got any ideas of anything they do with if fun but still focus on improving skiing let me know please and thank you.