papier (2) Paper (2) Mathematics (2) Change (2) Activity coefficients (2) Mathematics (2) enseignement (1) établissement scolaire (1) projet (1) méthodologie (1) lumière (1) analyse (1) prélèvement (1) Case (1) Observations (1) Methodology (1) Observations (1) Sheds (1) Educational change (1) Teaching (1) Teachers (1) Teacher-student relationships (1) Students (1) Sphere (1) Schools (1) Possibility (1) Methodology (1) Light (1) Learning (1) Grammar, Comparative and general--Case (1)