El conocimiento profesional de los docentes de Matemáticas en relación con la selección y uso de libros de texto

The professional knowledge of Mathematics teachers related to selection and textbooks use This paper shows that the selection and use of textbooks for Maths lessons (in the context of the sample teachers studied) is made from the framework of their own perspectives. This research has been carried out in two phases.The first stage,of exploratory nature,permitted the determination of the criteria of selection and use of text books within 120 randomly picked