Information about the title: Clear structure in every chapter: activate - build - secure. Activate prior knowledge in "Your Foundation." Secure the acquired knowledge in "Check Your New Foundation." Understandable examples with solutions: Students can follow standard tasks step by step based on the fundamental examples with detailed solutions. Learn independently: Students can self-check through additional solutions in the appendix to "Your Foundation" and "Check Your New Foundation." Tasks for everyone: Differentiate with the extensive range of basic tasks and advanced tasks. Use the introduction, stumbling blocks, and outlook for each topic. Basic tasks are clearly thematically assigned and cater to the foundational level. Advanced tasks connect the topics and address higher levels. Inspire with mathematics.