When you aren't using your best china, have your child help you set the table.
Have her count the number of people who will be eating, then count out the same number of knives, forks, spoons, plates, napkins, and so on.
Show her how to place everything on the table properly.
For younger children, you may want to set the plates and other breakables yourself, and have your child help you with silverware and napkins-- unless, of course, you are using paper plates!