Oreo Method: Delegating to Kids

Two ways to do it -- I call this the Oreo Method: you either eat the cookies or the cream:

Cookie Method

If you aren't in a hurry that day, the kids routinely do the tasks they're worst at until they 'graduate' from doing that task -- you're happy with the standards they're achieving for that task. This can go on for months.

Cream Method

Or when you're in a hurry: the other way around -- the kids do the chores they're the best at and the house gets put in order quickly.