1 shooter - 1 re-bounder first pair to hit 5 shots wins. Once the first hits from 5 spots second person now tries to hit from 5. Variation: Now all players compete for the ball. first player to hit 5 shots. Ball is live on a re-bound.
Game 1 -- Shooting technique
Game 2 - Boxing out
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.