This text examines the use of collaboration technologies in the problem-solving or decision-making process. These systems are widely used in both education and

Considerable efforts have been made in developing and assessing educational technology to support and teach argumentation. These efforts have culminated in the

The purpose of the volume is to explore the theory, development and use of visual displays and graphic organizers to improve instruction, learning and research.

It is with greatpleasure that we present the proceedings of the 4th International Symposium on Visual Computing (ISVC 2008) in Las Vegas, Nevada. ISVC o?ers a c