The last person in line is mission control. All teams begin at the same time. Mission control needs to decide what commands need to be given to the robot, one command at a time, in order to have the object retrieved. The robot performs the command and tells the person behind him or her that he or she has done so. That person informs the person behind him or her, and so on, until the message reaches mission control.
Mission control sends another command in the same manner.
When the robot has retrieved the object, he or she goes to the end of the line and becomes mission control. The person at the head of the line now becomes a new robot. Repeat until all objects have been retrieved. When the game is over, return to the classroom and discuss what happened. Discuss what things worked for communicating effectively and efficiently with your robot.