Figure 1. Schematic explanation of the functioning of the tools. a: Task in the conditions with tools. b: The one-elastic-band tool has one long elastic band. The three-elastic-bands tool has three elastic bands. The difference in color indicates the different bands. (Top) The three players are positioned in equilateral triangle. (Bottom) One player changes position dissolving the equilateral triangle. c: Structure of the belt for the one-elastic-band tool (Top) and three-elastic-bands tool (Bottom).