Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
In this new edition of his best-selling text, Brian Butterworth explains the latest research in the science of dyscalculia. He shows that dyscalculia is caused by a deficit in the ability to represent the number of objects in a set, differentiating dyscalculia from other forms of early mathematical learning difficulties.