BROSNAN, Patricia A. An exploration of change in teachers' beliefs and practices during implementation of mathematics standars - 35-53 - 1996, Vol. 18, no. 4 (Fall) = FOCUS ON LEARNING PROBLEMS IN MATHEMATICS (Massachusetts, EUA) Encabezamiento--Término de Indización: CALIDAD EDUCATIVA CONSTRUCTIVISMO ENSEÑANZA MAESTROS MATEMATICA