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According to personal constructivism, meaning cannot be transferred by means of words; it must be abstracted from individual experience (Glasersfeld, 1995).

However, according to social constructivism, although students' thoughts and opinions are private, their concepts are public (Matthews, 1994).

In contrast with the personal or cognitive constructivism, social constructivism focuses on the individual-in-social interaction.

Enfin, en vue des cou^ts et limites de ces outils, l'article propose un modèle de Collaborative Electronic Learning (Apprentissage coopératif électronique) basé sur une étude de trois ans menée au University of Calgary; il suggère que cette alternative est plus prometteuse et moins dispendieuse.However, in this paper it is argued that true collaboration in schools requires not only the technology, but also well-designed learning activities based on sound principles of collaborative learning.In this paper, theoretical foundations and the importance of collaborative learning are discussed, then three sophisticated telelearning tools and their potential for collaborative learning are presented.It involves face-to-face interaction by all students, heterogeneous teams, structured goal interdependence, individual accountability, and an emphasis on practising social and communicational skills.In her work with a variety of students in small groups at the computer, Anderson (1989, as cited in Sharon, 1994) found that putting children together to work at the computer is not enough.

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