Elizabeth de Freitas is Professor in The Education and Social Research Institute at Manchester Metropolitan University, UK, and professor of mathematics education at Adelphi University, NY. Her research focuses on philosophical and anthropological investigations of mathematics, science and technology, pursuing the implications and applications of this work across the social sciences. She is co-editor of What is a mathematical concept? (2017) and the ZDM special issue Body studies in mathematics: Different scales of mattering (2019); and co-author of Mathematics and the body (2014), published by Cambridge University Press.

Nathalie Sinclair is a Canada Research Chair in Tangible Mathematics Learning at Simon Fraser University and a Professor in the Faculty of Education. She is the founding and current editor of Digital Experiences in Mathematics Education and has written several books including the co-authored Mathematics and the Body: Material Entanglements in the Classroom, as well as over 70 journal articles. Her primary areas of research include the role of digital technologies in mathematics education, the teaching and learning of geometry and the nature of mathematical embodiment.