We are happy to invite you to attend the 37th Conference of the International Group for the Psychology of Mathematics Education (PME 37), which will be held at Kiel University from July 28 to August 2, 2013. “Mathematics Learning Across the Life Span” has been chosen as the theme of the conference to stress that mathematics education is not restricted to school education but already starts in early childhood and continues after school as lifelong learning. All our efforts will be directed to make our 2013 annual meeting scientifically and socially successful. We hope that your stay in Germany will be an informative and pleasant experience and we look forward to seeing you in Kiel in July 2013.