For the 2026 academic year entrance exams. This is a single subject SS math textbook. Total of 14 books. The SS single subject course is a program where students choose two subjects they are particularly weak in during the latter half of their 6th year and concentrate on training all units. Social studies and math were chosen. There are writings in the books. The amount of writing varies by unit. There are also multiple pages with no writing, but I will upload images to show the condition of the writing. Pages may be folded, stained, or torn, and there may be notes written on the front and back covers. (I have not inspected each page individually.) Also, as these are used by children, please refrain from purchasing if you are concerned about minor details. I plan to list SAPIX textbooks as time permits. Please inquire if there are any books you are interested in. I have all of them except for some from 5th and 6th grade. Thank you for your understanding if there are any omissions.