This is a 15-book set for 6th graders, including the Yosho Series (Upper Volume) textbooks and exercise workbooks for math, Japanese language, science, and social studies, along with their respective answer keys and explanations. - Series: Yosho Series Textbooks & Exercise Workbooks - Grade: 6th Grade, Upper Volume - Subjects: Math, Japanese Language, Science, Social Studies - Number of Books: 15 - The answer key and explanations for the math exercise workbook are located at the end of the book. - Used for educational purposes for six months, starting February 2025. - The books have been used by a child and therefore have significant damage, scratches, and writing. - The answer sheets attached to the end of the textbooks have been removed by cutting along the dotted lines as they have been used. - The name written on the back cover has been blacked out. - Please understand that there may be minor scratches due to amateur storage. Please purchase with your understanding. Other grades and lower volume series are also available for separate sale. - No pets are kept. ※ Due to personal reasons, I will be unable to list items until around summer. If you are interested, please take this opportunity! Thank you for looking!