EL HORIZONTE MATEMÁTICO EN EL CONOCIMIENTO PARA LA ENSEÑANZA DEL PROFESOR: GEOMETRÍA Y MEDIDA EN EDUCACIÓN PRIMARIA.

Promoting the elaboration of students' mathematical knowledge and understanding requires teachers' having a knowledge allowing connecting students' prior and future knowledge. In this paper we focus on aspects of the mathematical horizon as one of teachers' knowledge dimensions, presenting an interpretation of such knowledge, with a practice-based approach, grounded in the analysis of three levels of teachers' practices. Using examples from tasks in geometry and measurement in elementary school practices, some indicators are presented and discussed with the aim of describing and analyzing how teachers' horizon knowledge allows enriching teaching practices. [ABSTRACT FROM AUTHOR]