TY - JOUR AU - María Angeles Navarro AU - Pedro Pérez Carreras TI - Local rate of change: a Socratic experience in van Hiele's model framework JO - The Teaching of Mathematics PY - 2010 SP - 63 VL - XIII IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM2_2010_XIII_2_a0/ LA - en ID - TM2_2010_XIII_2_a0 ER -