I am selling various items from the Teiryo-kai 2024 edition, specifically the handouts from the high school year 3 mathematics SA9 course. Set Contents: ① Answer explanations for exercises ② Calculation tests ③ Calculation drills ④ Explanation handouts for the Confirmation Series/Problem Sets (only for sessions 18-24) Occasionally, there may be some missing materials. This is due to poor management, but I have priced the items accordingly, so please understand.