The Laboratory of Informatics from Grenoble (LIG) is a Joint Research Unit of UJF, the CNSR (Centre National de la Recherche Scientifique), de Grenoble-Institut Polytechnique (Grenoble INP) and of the UPMF (Université Pierre Mendès France de Grenoble). It brings together 165 academics and 240 doctoral and post-doctoral students supported by 65 administrative and technical staff. Its research competences relate to theoretical computer-science, infrastructure, software engineering, autonomous systems, person-system interaction, cognitive systems and ambient computing. The disciplines cover computer science and applied mathematics, language science and ergonomics. The LIG will be present in STELLAR by the MeTAH team which is one of the 24 teams of the LIG, and it is composed of 20 academics, 3 research fellows, 11 PhD students and 4 engineers. The team has a long history of leadership in TEL research (esp. in relation to maths and science education). Projects like Ariadne, Aplusix and Cabri-geometry are among its successes during the last two decades. MeTAH has actively contributed to the shaping of the research area, either at French or European level. The MeTAH team has a long experience of collaboration with European research groups, especially with the University of Bristol (common projects, co-authoring of papers, PhD committees), the Italian CNR research centre ITD (co-supervision of PhDs, common projects), the London Institute of Education (IoE) or EPFL and Leuven in Ariadne project. Such long lasting collaborations have enabled taking up the challenge of initiating the Kaleidoscope Network. This network has allowed a transition from bilateral to multilateral collaborations. This has been especially successful in the context of two collaborations in which MeTAH participated: one on integrating "collaborative, inquiry and experiential learning" (Kaleidoscope ERT CIEL gave birth to a FP7 IP, SCY) and another on "TEL in mathematics" (Kaleidoscope ERT TELMA led to a FP6 STREP, ReMath). MeTAH is open to the development of new integrated research action, especially on personalisation, scripts and the emergent research on learning in the medical sector. The design and implementation of a collaborative research platform, sharing data and tools (initiated within the Kaleidoscope Shared Virtual Laboratory), are themes with a high level of priority. Moreover, MeTAH continues its support and contribution to the development of the community infrastructure, and to the open archive TeLearn.