The Mathematics series is completely revised. The new core curriculum for comprehensive schools in Lower Saxony is included. With mathematics, you can implement the required content and process-related skills at all levels of requirement quickly and reliably. New elements include an entrance test with tasks on required competencies, self-assessment options, support and solutions for self-control; clear differentiation of tasks (basic, extended, and additional requirements); knowledge compact with important results and useful procedures; and an exit test to check the required competencies with self-assessment options, support, and solutions for self-control. Proven elements consist of a structured system for individual support, an openly designed learning environment as chapter entry, and practice and consolidation on all requirements.