Within half court only, offensive team must try to make 15 consecutive passes.
The defensive team must try to intercept or deflect the passes.
No dribbling.
Make sure you are watching spacing and footwork.
Look at the way players move off the ball. You may need to demonstrate where and how to get into position for a good passing angle.
Suggested progression after reaching 15 passes try to score.
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.
The ball screen produces almost half of all professional offensive possessions, yet most teams still teach it as a memorised play. The modern approach trains the read - giving players a framework to decide based on what the defence does, not what the coach called.