Information about the title: Review topics from earlier grade levels even without a textbook. This compact booklet contains all the mathematics knowledge of lower secondary education. In addition to a clear presentation of knowledge, it offers exercises and solutions for self-evaluation for each topic. Information about the series: 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-assess 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.