OBSERVATION AND SUPPORT IN A COLLABORATIVE PEDAGOGICAL DEVICE - A Multi-agent System to Control and Monitor Pedagogical Activities Topics: Authoring Tools and Content Development; Collaborative Learning; e-Learning Platforms, Portals; Web-Based Learning, Wikis and Blogs In Proceedings of the 4th International Conference on Computer Supported Education - Volume 2: CSEDU, 135-140, 2012 , Porto, Portugal