Two teams in the area and players are assigned their own numbers. Players pass the ball to their own team in a specific numerical order, e.g. 1->4 or 4->1.
Variations:
One-touch passes
Continuous movement
Increase the number of balls per team
Divide the area into four sections and make a rule that passes must always go to a different section.
Quality factors
Quality of passes.
Movement off the ball: Continuous movement to create passing lanes and maintain the flow of the game.
Communication: Clear communication within the team to maintain the numerical order.
Scan: Head up and vision, so the player recognizes the next passing direction in time.