In recent years, the systemic-constructivist approach has gained significant interest and practical application not only in the educational sector but also in extracurricular areas. Reich develops the theoretical foundations in his manual, which is suitable both as an introductory textbook and as a study book, using examples. In this way, it particularly helps to bridge the gap between psychological and educational theories for practice. For this reason, the present volume has rightly become one of the key classics in pedagogical constructivism.