Benesse's Lesson Understanding Support Series Total of 10 books ・Mathematics Solution Confirmation Encyclopedia (4 books) - Subjects: Mathematics I, II, A, B A problem collection for systematically learning mathematical solutions. ・Mathematics I・A Theorem and Formula Confirmation BOOK for When You're Stuck ・70 Mathematics IA・IIB Solution Patterns to Memorize from Problem Phrases Key Point Confirmation/Memorization BOOK (4 books) Contemporary Society Politics/Economics / Biology Basics / Chemistry Basics / World History Reference Images 2nd image: Mathematics Solution Confirmation Encyclopedia II 3rd image: Theorems and Formulas for When You're Stuck 4th image: Chemistry Basics 5th image: Contemporary Society Politics/Economics 6th image: Solution Patterns 70 There is some wear and tear, such as creases, but there are no writings. You can purchase them as a set or individually. Feel free to comment. Thank you for viewing.