Information about the title: To transition to upper secondary school, students must consolidate their knowledge and skills from previous grades; at the same time, they acquire the mathematical tools for secondary education II. Includes a solution booklet for immediate verification of completed tasks. Information about the series: Clear structure in each 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 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 differentiation for all levels.