Coach Dinoffer has another great suggestion for skill-building games if you're teaching tennis to younger kids.
Next let's move to a game of Tag which requires a few different color spots to be laid out on the court. It's a regular game of Tag but the teacher calls out different colors which designate safe zones. If the child is standing on the right color then they can't be tagged. In setting up this game, make sure there are more children than spots of each different color. And although you may think that this game is exclusively for very young children, it works surprisingly well for older teams and even many adults