Challenge 3rd Grader 2024 This is a set of 12 "Waku Waku Hakken BOOKs" from the April issue to the March issue. There are magic marker marks on the back covers of the December and March issues, which have been erased. Overall, they are relatively clean, but please understand that I have not checked every page for writing or folds. The "Decimal Fraction Master Book" has not been used at all and is in good condition. These are used items that my child has read, so I would appreciate it if you could purchase them if you understand this.