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This paper presents a new method of measuring learner’s satisfaction while using electronic learning materials (e-courses, edutainment games, etc.) in virtual non-linear environments. Method is based on a relation of Discovering and Learning probability distribution curves obtained by collecting and evaluating the human-computer interaction data. While being near real-time, this measurement is considered highly unobtrusive and cost-effective because of its automated approach. The first working prototype EDUSA 1.0 was developed and successfully tested by the Distance Education Studies Centre of Riga Technical University.

Tele-learning --- non-linear learning --- multi-tasking evaluation --- ambient usability