Resulting from a conference that took place in Amiens, France, in June 2019, this book examines the place and role of objects centered in teaching practices from kindergarten to university, both in the context of France and elsewhere. These "objects for learning" are considered in their physicality as productions, work or signs that are used for learning. They become "objects to learn about" when the object itself is the learning objective. This book offers a cross-disciplinary perspective, linking the different disciplinary fields studied and the many reference sources used by the authors. This two-volume work offers an overview of current research on the subject, with this second volume focusing on objects in representations of space and time, then on learners' activities in the making or use of objects, before concluding with different cultural and philosophical perspectives on objects