The "My Mathematics Book. 9th Grade. Workbook" by Cornelsen is a specially designed workbook tailored to the needs of students with learning difficulties. It offers a variety of exercises aimed at enhancing mathematical understanding and strengthening skills in various areas of mathematics. The book is written in German and is intended for middle school students, particularly those in the 9th grade. With a sturdy paperback cover and 72 pages, it is both durable and convenient for daily use in class or for studying at home. The authors, Solveig Haugwitz and Katharina Förster, have crafted the material to meet the high practice needs of this target group while keeping it engaging and accessible. This workbook is a valuable tool for deepening mathematical concepts and boosting confidence in one's abilities.