○ This item was used by a child at school. ○ It is a set of 3 books: the answer key and the example problem collection. ○ Inside, only the example problem collection has writing in highlighter on the first page. There are folds and stains on the outside, but the inside shows no signs of use. I apologize if I missed any writing. ○ Name written on it. I will black it out before shipping. ○ I plan to use recycled packing materials. ○ Immediate purchase OK. ○ No pets, no smoking.