1 “... student in the field of mathematics education with Prof. Dr. Gabriele Kaiser at the University of Hamburg...”

2 “... at the University of Hamburg in the field of mathematics pedagogy...”

3 Table of Contents: “... education: Katrin VORHÖLTER, University of Hamburg, Germany; Gabriele KAISER, University of Hamburg, Germany...”

4 “..., the Aristotle University of Thessaloniki, the University of Hamburg and the Technical University of Milan...”

5 “... in mathematics at the University of Hamburg. Benjamin Rott is a professor of Mathematics Education...”