The 'green' books of the series Mathematics for the High School were specifically designed with the math teacher in mind. Not only are they a useful resource for gaining familiarity with teaching in a Waldorf school, but they are also a source of inspiration – offering fresh perspectives and new insights into courses that have perhaps been taught many times. This book contains suggestions for lesson blocks that have put forth from a variety of experienced teachers. They cover the topics that are taught in the 10th grade in the Waldorf curriculum. These include: • Trigonometry • Higher Calculations • Logarithms • Numerical Relationships in Music • Surveying The book describes the material not only in theoretical terms, but rather it offers many examples and exercises which help make the concept accessible to the students. A number of essays regarding methodology and pedagogical topics are also included for enrichment.