“…Some of the systems used for teaching and learning are: SNS (Gottdenker et al, 2002), a web-based CSCL environment to support the implementation of a learning community, wherein teachers, parents and students use tools for representing, organizing and sharing knowledge; DEGREE (Barros and Verdejo, 2000), which supports the accomplishment of a variety of learning tasks in small groups of students in a asynchronous way as well as their evaluation; and Kükäkükä (Suthers and Xu, 2002), which supports referencing, manipulating and discussing about external artifacts (sketches, pictures and objects) involving students in online learning. In (McLaren and Sewall, 2006), the authors present a methodology to learn from the results obtained by the students in order to improve the collaborative learning system.…”