Cristina Sabena is Full Professor at the Department of Philosophy and Science Education of the University of Torino, where she teaches Mathematics Education to future primary teachers. Her research areas include the role of the body, tools and signs in the teaching-learning processes of mathematics, semiotic approaches and networking theories in mathematics education. Recently she is studying how informal settings may contribute to mathematics education, including teacher education. She currently serves as the President of CIEAEM (The International Commission for the Study and Improvement of Mathematics Teaching).