Full professor in the Teaching and learning studies Department of Laval University, Sylvie Barma is interested in science and technology teachers who reflect and renew their teaching practice. After a long experience as a high school science teacher, she participated in the writing of Quebec Science and Technology and Technological and Scientific Applications programs for four years. Her experience as a practitioner and as a curriculum writer is now being used in her research. The latter focus on the contextual and systemic dimension of pedagogical innovation in teaching and on the development of 21st century digital skills in science class. She considers the teacher’s activity as a responsibility shared by the various actors in a community. The originality of her research works lies in the contribution of the 3rd generation of activity theory, the Expansive learning which takes place when solving problems in the school environment. She was a visiting professor at the University of Helsinki and had the opportunity to deepen the methodology of the Laboratory of Change, which she uses in her research.