P. A. Andersen, Communication, Nonverbal, 2008.
DOI : 10.4135/9781412958479.n87

M. Breen, Contemporary paradigms in syllabus design, Language Teaching, vol.20, issue.3, pp.158-174, 1987.

T. Codreanu and C. Celik, Effects of webcams on multimodal interactive learning, ReCALL, vol.23, issue.01, pp.30-47, 2013.
DOI : --- Either first page or author must be supplied.
URL : https://hal.archives-ouvertes.fr/hal-01486704

E. Council, Common European Framework of Reference for Languages: Learning, Teaching, Assessment. Cambridge, 2001.

C. Develotte, N. Guichon, and C. Vincent, The use of the webcam for teaching a foreign language in a desktop videoconferencing environment, ReCALL, vol.144, issue.03, pp.293-312, 2010.
DOI : 10.2307/3588421
URL : https://hal.archives-ouvertes.fr/hal-00806433

R. Ellis, Task-based language learning and teaching, 2003.

N. Guichon, Se construire une présence pédagogique en ligne, 2017.

N. Guichon, M. Bétrancourt, and Y. Prié, Managing written and oral negative feedback in a synchronous online teaching situation, Computer Assisted Language Learning, vol.12, issue.1, pp.181-197, 2012.
DOI : 10.1017/CBO9781139524780.003
URL : https://hal.archives-ouvertes.fr/halshs-00854277

I. Dublin, Centre for Translation and Textual Studies

N. Guichon and C. Cohen, Multimodality and CALL The Routledge handbook of language learning and technology, pp.509-521, 2016.

N. Guichon and V. Nicolaev, Influence de certaines caract??ristiques des t??ches d???apprentissage sur la production orale en L2, Interagir et apprendre en ligne, pp.61-76, 2011.
DOI : 10.4000/books.ugaeditions.1186

N. Guichon and C. R. Wigham, Abstract, ReCALL, vol.28, issue.01, pp.62-82, 2016.
DOI : 10.1017/S0958344015000178

E. T. Hall, Handbook for Proxemic Research, Anthropology News, vol.36, issue.2, 1974.
DOI : 10.1111/an.1995.36.2.40

R. Hampel and U. Stickler, The use of videoconferencing to support multimodal interaction in an online language classroom, ReCALL, vol.23, issue.02, pp.116-137, 2012.
DOI : 10.1093/applin/6.1.71

J. Hellermann and S. Doehler, On the contingent nature of language learning tasks Classroom Discourse, pp.25-45, 2010.

J. Heritage, A change-of-state token and aspects of its sequential placement, Structures of social action, pp.299-345, 1984.
DOI : 10.1017/CBO9780511665868.020

G. Jefferson, Side sequences, Studies in social interaction, pp.294-451, 1972.

C. Jewitt, Different approaches to multimodality The Routledge handbook of multimodal analysis, pp.28-39, 2011.

C. Jewitt, J. J. Bezemer, and K. L. O-'halloran, Introducing multimodality, 2016.

R. H. Jones, Discourse analysis: A resource book for students, 2012.

L. Kääntä, The multimodal organisation of teacher-led classroom interacation, International perspectives on the ELT classroom, pp.64-83, 2015.

A. Kendon, The Study of Gesture, Recherches Semiotique/Semiotic Inquiry, vol.2, issue.1, pp.25-62, 1982.
DOI : 10.5840/cpsem198148

A. Kendon, Studies in the behavior of face-to-face interaction, 1977.

M. Lamy, Multimodality in second language conversations online: Looking for a methodology, Interdisciplinary perspectives on multimodality: Theory and practice, pp.385-403, 2009.
URL : https://hal.archives-ouvertes.fr/edutice-00387133

M. Lamy and R. Flewitt, Describing online conversations: insights from a multimodal approach, 2011.

N. Markee, Contexts of change, Innovation in English language education, pp.173-193, 2013.

N. Markee, Giving and Following Pedagogical Instructions in Task-Based Instruction: An Ethnomethodological Perspective, pp.110-128, 2015.
DOI : 10.1057/9781137340733_7

N. Markee, Teachers' instructions: Toward a collections-based, comparative research agenda in classroom conversation analysis. Paper presented at HUMAN Social Interaction and Applied Linguistics Postgraduate Conference, 2015.

F. Martin, M. Parker, and B. Allred, A case study on the adoption and use of synchronous virtual classrooms. The Electronic Journal of e-Learning, pp.124-138, 2013.

D. Mcneill, Hand and Mind, 1992.
DOI : 10.1515/semi.1993.95.1-2.5

M. Dahlberg, G. Bagga-gupta, and S. , Learning on-the-go in institutional telecollaboration: Anthropological perspectives on the boundaries of digital spaces Researching language learning interaction online: From social media to MOOCs, pp.259-281, 2015.

S. Norris, Analyzing multimodal interaction: A methodological framework, 2004.

S. Norris and J. Pirini, Communicating knowledge, getting attention, and negotiating disagreement via videoconferencing technology: A multimodal analysis, Journal of Organizational Knowledge Communication, vol.3, issue.1, pp.23-48, 2016.
DOI : 10.7146/jookc.v3i1.23876

D. Nunan, Task-Based Language Teaching, 2004.
DOI : 10.1017/CBO9780511667336

Ö. Berglund and T. , Multimodal student interaction online: an ecological perspective, ReCALL, vol.13, issue.02, pp.186-205, 2009.
DOI : 10.1007/1-4020-7912-5

T. Pica, R. Kanagy, and J. Falodun, Chapter 9. Choosing and using communication tasks for second language instruction, Tasks and language learning, pp.9-34, 1993.
DOI : 10.1075/tblt.1.11cho

T. Raith and V. Hegelheimer, Teacher Development, TBLT and Technology, 2010.

. Reinders, Task-based language learning and teaching with technology, pp.154-175

H. M. Satar, Multimodal language learner interactions via desktop videoconferencing within a framework of social presence: Gaze, ReCALL, vol.1, issue.01, pp.122-142, 2013.
DOI : 10.1111/b.9780631205968.2003.00012.x

P. Seedhouse, Learning to talk the talk: Conversation analysis as a tool for induction of trainee teachers Professional encounters in TESOL: Discourses of teachers in training, pp.42-57, 2008.

O. Sert, Integrating Digital Video Analysis Software into Language Teacher Education: Insights from Conversation Analysis, Proceedings of Akdeniz Language Studies Conference), pp.231-238, 2013.
DOI : 10.1016/j.sbspro.2013.01.059

M. G. Sindoni, Spoken and written discourse in online interactions: A multimodal approach, 2013.

H. Sloetjes and P. Wittenburg, Annotation by category ? ELAN and ISO DCR, Proceedings of the 6th International Conference on Language Resources and Evaluation, 2008.

M. Tellier, Geste coverbal. Entrée glossaire Enseigner l'oral en ligne, Une perspective multimodale, p.15, 2017.

Y. Yen, H. Hou, and E. Chang, Applying role-playing strategy to enhance learners??? writing and speaking skills in EFL courses using Facebook and Skype as learning tools: a case study in Taiwan, Computer Assisted Language Learning, vol.34, issue.3, pp.383-406, 2015.
DOI : 10.1111/j.1467-8535.2007.00769.x

K. Van-den-branden, Introduction: Task-based language teaching in a nutshell Task-Based language education: From theory to practice, 2006.

T. Van-leeuwen, Introducing Social Semiotics: An Introductory Textbook, 2004.

H. Z. Waring, Using Explicit Positive Assessment in the Language Classroom: IRF, Feedback, and Learning Opportunities. The Modern Language Journal, pp.577-594, 2008.

W. Todd and R. , Classroom teaching strategies, 1997.

W. Todd, R. Chaiyasuk, I. Tantisawatrat, and N. , A Functional Analysis of Teachers' Instructions, RELC Journal, vol.26, issue.3, pp.25-50, 2008.
DOI : 10.1016/S0346-251X(98)00026-8