Technological tools challenge teachers' pedagogical activities. The use of information and communication technologies (ICT) in education should help teachers integrate new pedagogical methods into their work. This study explores macro-level computer-supported collaborative learning scripts as a pedagogical method to facilitate collaboration. Macro-scripts set up conditions in which favourable collaborative activities such as argumentation should occur. This case-study examines the difference between the "ideal" script and the "actual, realized" script to find out how collaboration differs between different groups. This study demonstrates that macro-scripts support collaboration by introducing the reason for interaction and by helping students solve learning tasks. However, macro-scripts do not guarantee high-level collaboration. (Contains 3 excerpts.)