摘要:AbstractThe evolution of ICT promotes researchers in e-learning to integrate in the author system, the ability to design custom learning paths, tailored to the needs of users in e-learning platforms. The scenario of learning activities is one of techniques available to teachers, in order to customise and to adapt learning paths. The authors of educational scenarios can choose from several educational approaches, which change the learning environment.Our case study is based on project-based learning, as a method of collaborative work of a group.In this educational framework, a scenarisation of collaborative learning activities in the context of group work presents several challenges for researchers. The Modelling languages of learning scenarios such as EML (Educational modelling language) are criticized by their abstraction and their difficulty to be used by teachers.To avoid these constraints, we propose in this paper a meta- model that will describe a modelling language.The modelling language is used as an author tool, to formalise an activities scenario in online educational project.Our meta-modelling approach is based on the notion of process, and the implementation of the Framework of activity theory. To illustrate our proposal, we have implemented the evaluation process, as instantiation of the proposed meta-model.The assessment process during a project requires points of decision making. The decision is addressed through the hierarchical analysis method (AHP).