For the 2026 entrance exams. This is a single subject math textbook. 14 volumes in total. The single subject course is a program where students choose two subjects they are particularly weak in during the latter half of 6th grade 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 a child, 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 volumes you are interested in. I have all of them except for some from 5th and 6th grade.