Institutions edition & galerie hoffman, Friedberg / Hessen, D Kettle's Yard, Gallery of the University of Cambridge, UK NewArtCentre, Salisbury, UK Oxford University Society, UK Pädagogische Hochschule Freiburg / University of Education, Freiburg, D Swiss Autodesk User Group, CH The Association of Teachers of Mathematics, UK The Mathematical Associaton, UK The Queen's College, Oxford, UK