Abstract
This study analysed the activity of four learners involved in an e-learning device relying on the course-of-action theoretical framework. It focused on the way they organized their activity along time. Traces of activity and verbalisations about a week of study have been collected, allowing identifying meaningful units and structures in order to describe the learners' course of action during this week. Results showed that the learners' activity was de-synchronised, that they were straying from the instructors' prescriptions, and that they preferred to solve quickly by themselves the encountered problematic situations. The possibilities to get help quickly from the instructors or from their peers were limited by de-synchronisation of their activity.