Performing distant teaching with constructivist scenarii means having an adequate learning environment that allows rich communication exchanges, integrates both support tools for learners and tutors (e.g. portfolio, journal) as well as knowledge management tools. Constructivist learning is demanding in terms of human tutoring since tutors have to guide the learner in his/her knowledge construction. An appropriate Tutoring Support Structure (TSS) is thus also a requirement for tutors to work in efficient conditions. The first analysis of a constructivist teaching experience using both an adequate learning environment and a Tutoring Support Structure reveals the important role distributed cognition plays in such teaching and learning strategies.