Set of 4 books: Answer and Explanation Editions for 1st, 2nd, and 3rd year junior high school mathematics. No problem sets included. Covers: Torn and dirty. Please check the images. Inside: No writing or markings. Name section: Will be blacked out with a black pen before shipping. - Title: Understanding Mathematics 1 - Problem Set: Mathematics Problem Notebook 3 - Answer Edition: Mathematics Answer Edition 1 - Answer Edition: Mathematics Answer Edition 2 Thank you for viewing.