[Becca]

Our school does a contest.
Each week the kids take a quiz in reading and math. Based off their scores (and the use of their strategies) they get a certain number of tickets.
Then on Friday afternoons, we have an assembly and a certain number of kids names are drawn from each grade. They get to shoot a basket, if they make it they get a prize. If they don't, they can ask a teacher or other school adult for "help".

Basically, they can get anyone to help until they make the basket. When they make the basket, they get a prize.

It is pretty motivating for the kids to want to get lots of tickets. I know most of you won't be able to do a school-wide activity, but you might be able to modify this for your rooms.