This is a set of Nichenoken 2025 edition textbooks, including problem sets and answer keys. These were used from February to July. Stage IV, Honka Kyoshitsu (Core Classroom) 6th Grade Math, Science, Social Studies, Japanese Answers for all 4 subjects Stage IV, Eikan e no Michi (Road to Glory) 6th Grade Math, Science, Social Studies, Japanese Answers for all 4 subjects ○ All textbooks and answers have index stickers with the lesson numbers. ○ There are writings and markings made by the child. ◯ The child's name is written, so it will be blacked out with a black pen or covered with a sticker. These are used items that were used by a child. We hope that those who understand this and those who would like to use Nichenoken materials for reference will find them helpful. Thank you. ★★Price is not negotiable★★