The purpose of videoconferencing is basic. Put people in visual touch with each other. The examples below are specific to education but could easily be generalized to a number of settings whether business or government. Between-classroom communication could involve sharing scenes of different classrooms in different states and countries including faces of students, and student and student team project sharing of completed projects. This has many multicultural uses which include breaking stereotypes and recognition of the world's diversity.
Students can work together to complete a project or solve a problem.
The concept of project teams can be extended to global dimensions. Even working within a time-zone still provides a very wide variety of countries stretching from the North Pole to the South Pole. The project is then past from one time zone to the next around the world. By the time students come to their class a day later, the problem has been worked on continuously for 24 hours. Teams would then need to make a decision on whether they were done or to give it another pass around the world for further editing.