Several researchers have studied the impact of collaboration between the learners on their cognitive levels, but few studies have been carried out on the impact of collaboration between the teachers. The aim of our research is to study the effects on the knowledge levels of learners of collaborative construction of learning objects created by the…

This paper reports on the evolution of a software environment called ClassACT (Class Annotation and Collaboration Tool) from a simple multimedia annotation program to a multi-domain archival database management system. ClassACT was developed at Northwestern University (Illinois) for instructional use, and, although its original goal was to solve a…