This is a set of three "Challenge" 2nd Grade Skill-Up Drill Basic Course workbooks. My child didn't use them, so they have been stored at home and are now being offered for sale. These are for the 2022 school year. There are many 2nd-grade Japanese language and math problems, and you can cover a full year with these three books. They are unused, but have been stored at home, and one book has some creases on the cover (see photos 2-5), so please understand this. #Challenge #ElementaryCourse #2ndGrade #SkillUpDrill #BasicCourse #ShinkenZemi