3 players work with one ball between them inside a quarter of the court.
In the middle of the half of area is a cone. Player 1, with the ball in hand, starts on one of the corners of the grid and passes to player 2 after they have run inside the area, touched the cone, and then run outside into open space to receive the pass.
Player 2 then passes to player 3 and the drill continues.
Look for sharp running with a burst of acceleration after players have touched the inside cone.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.