Information about the title: Workbook. The workbook is aligned with the student book. With its abundance of exercises for practicing, consolidating, and reviewing, it is generally oriented towards the lower performance level. Each page of the workbook includes a reference to the corresponding pages in the student book, and the difficulty level is indicated for each task. Information about the series: Active mathematics instruction that supports all students. The concept "Klick! Mathematics" takes into account the individual learning starting points of students with a focus on learning support. Clear and manageable learning structures, content reduced to the essentials, and a clear organization challenge them to think mathematically and build their action competence. Principles of the teaching material: active-discovery learning, operational practice, individual support for all, visual and life-related, clear structure.