Solid mathematics, clear structures, and reliable guidance for modern math teaching: The new intersection is once again a step ahead. Consistently reliable: Proven and new. Many familiar elements have been further developed, while new aspects have been carefully integrated. What remains is, for example, the familiar clear organization of chapters and learning units, as well as the tried-and-true feedback mechanism, which now offers a test at two learning levels. The quick diagnosis helps everyone get started. The new perspective alleviates your teaching. To ensure that everyone can keep up, each chapter begins with a self-assessment, the perspective: necessary foundational knowledge is queried and verified, and opportunities for review within the book are pointed out. The pages also assist with the necessary documentation of learning progress. Fully prepared for everything.