First the “path” of the ball is determined. We throw the ball so that each person in the group catches it once. If someone has already held the ball after throwing it to someone else, they should put their hands behind their backs as a sign that they should not be passed the ball again. Everyone should remember who they received the ball from and who they threw it to. Once the path of the ball has been determined, from the first to the last person in the group, the ball has to follow the same path for the second time. This time there are no hands behind backs. More than one ball can be used at a time and some can even go “backwards”.