“This is mostly useful as a reference text for experienced mathematics educators interested in further understanding the European traditions … . Each chapter ends with a carefully-curated reference list, which I think is a major selling point of this book. These lists are excellent, comprehensive, and extensive, with many English-language references. They might be particularly useful for Ph.D. students in mathematics education, or others interested in gaining a comprehensive understanding of the didactical traditions summarized in this book.” (Spencer Bagley, MAA Reviews, June 03, 2019)