Jill Adler Editor

Jill Adler holds the SARChI-FRF Mathematics Education Chair at the University of the Witwatersrand, South Africa, and is Visiting Professor of Mathematics Education at King’s College London, UK. She is the 2012 recipient of the Academy of Science of South Africa (ASSAf) Gold Medal for Science in the Service of Society and of the 2015 Freudenthal Award.

Anna Sfard is a Professor of Education at the University of Haifa, Israel. She served as the first Lappan-Philips-Fitzgerald Professor at Michigan State University, USA, and is the Visiting Professor in the Institute of Education, University College London, UK. She is the recipient of 2007 Freudenthal Award and a Fellow of the American Educational Research Association (AERA).