Nicholas H. Wasserman
Adding diversity to mathematical connections to counter Klein’s second discontinuity

Nicolas Grenier-Boley
Comment choisir des contenus mathématiques pertinents pour comprendre et surmonter la seconde discontinuité de Klein avec les futurs enseignants ? Le cas du produit scalaire

Carl Winsløw, Rongrong Huo
From global to local aspects of Klein’s second discontinuity

Max Hoffmann
Symmetry as a Topic for the University Education of Pre-Service Teachers

Andrew Kercher, Rina Zazkis
Scriptwriting as a Catalyst for Linking Undergraduate and School Mathematics

Gaëtan Planchon, Thomas Hausberger
Developing Kleinian Praxeologies: The Case of the Integral

Lisa Hefendehl-Hebeker
Epistemological Demands of the Second Discontinuity

Thomas Bauer, Eva Müller-Hill
Pre-service teachers’ classroom stagings of proving-related activities and possible effects of Klein’s discontinuity

Virginie Deloustal-Jorrand, Michèle Gandit, Zoé Mesnil
Spécificités des connaissances en logique et conséquence sur la double discontinuité de Klein