Depending on the interest, there might be an English edition!
Mathematics: concrete, constructive, creative. Build, play, and learn with fun.
Discover the mathematical universe by building and experimenting with 28 fascinating models from simple to complex. You will get a different perspective on many core concepts in mathematics such as basic arithmetic, products and factorization, area and integration, sine waves, polynomial equations, linear equation systems, and many more.
Questions & answers guide you through the book. Detailed and tested photographic building instructions are provided for every model as well as a list of spare parts.