Divide the players into teams and arrange them in files with feet apart behind the starting line, facing front. Give the front player of each team a ball. At a signal the ball is rolled back between the legs of the players; the rear player on getting the ball runs forward to the turning line, then returns and takes his place at the front of the line, and rolls the ball back again.
Ball
6-10 players per team
Make sure to explain rules clearly before starting. Divide players into equal teams for fair competition.