The triangle teacher – pupil – knowledge in e-learning environment

Our proposal starts from the study of the epistemological statute of the didactics of the mathematics (Henry, 1991; D’Amore, 1999), which faces the phenomenon of learning fromthe point of view of fundaments, in order to give useful and specific considerations for e-learning environment. In particular we will focus on how the triangle teacher-pupil-knowledge changes when we use e-learning platforms.