SUMMARY

Teaching Algorithms is one of the most important and challenging educational topics regarding IT in High Schools. The aim of this research is to investigate whether and how Computer Supported Collaborative Learning (CSCL) environments facilitates the teacher to create activities and to define the mental models and conceptual changes during teaching in order to understand how students construct knowledge in the specific field during their activities. Two relevant activities for collaborative learning were developed with or without a computer; and from the study and the analysis of the activities interesting conclusions and questions