Set-up:
Use both ends of the court and make four lines, one under each basket with the players facing the free throw line, and one at each free throw line with players facing the basket.

Half-Court Drill:
The defensive players are under the basket; the offensive players are at the free throw line. The first player in the defensive line passes the ball to the offensive player at the free throw line, and closes-out aggressively. The offensive player tries to score, by shooting or driving to the hoop. The defender should play aggressively and box-out after any shot. Once the offense scores or the defense stops her, it's done, and they pass to next defensive player in line on the baseline. The rotation is that the offensive players go to the defense line and vice-versa.

The defensive players should work on proper stance and footwork (see Basic Defense), and box-out on any shots. The defense should close-out initially with the strong foot forward and that hand up toward offensive player. Overguard the offensive player's strong side. The other hand should be low, out to the side, palm up. Proper footwork means sliding with the offensive player (don't cross your feet), and staying between the player and the basket. Watch the belly-button, contest all shots with a hand up at the shooter.

This is also an excellent time to have your offensive players work on receiving the ball in triple threat position, using a jab step or some other fake, and learn to take the ball to the hoop.

You can make a game of it and have your players or managers keep score. Losers run.

FullCourt Drill

This is a good full-court conditioning drill, while working on defensive footwork. See the diagram.

Start with a line at one end of the floor. The first player in line becomes the defender. The next person in line attempts to dribble the entire length of the floor in a straight line, without having to cross-over or change direction. The defender, by using correct footwork, must try to "turn" the defender as many times as he can... i.e. force him to change direction or cross-over dribble. Once they reach the opposite end, the pair moves over to the opposite side of the floor and the original defender now becomes the dribbler and vice-versa for the trip back up the floor. Meanwhile, the next twosome can start up the opposite side of the floor.