Positioning during group work on a novel task in algebra II
Anna F. Dejarnette, Gloriana González
págs. 378-422
The codevelopment of mathematical concepts and the practice of defining
Marta Kobiela, Richard Lehrer
págs. 423-454
How students' everyday situations modify classroom mathematical activity: the case of water consumption
Vanessa Sena Tomaz, Maria Manuela David
págs. 455-496
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