Thank you for viewing. This is a set of two books: "4STEP Mathematics II+B" and "4STEP Mathematics I+A" for the new curriculum. These are problem sets that accompany the textbooks published by Kenkyusha. Neither book has any writing inside. ⚪︎4STEP Mathematics II+B ・Condition: Unused, so the inside is clean (no noticeable scratches or stains) ・Special Notes: There are some minor scuffs on the cover. ⚪︎4STEP Mathematics I+A ・Condition: Used, but there is no writing inside as far as I can see. ・Special Notes: The cover shows signs of use (scuffs, folds), but the inside is usable without any problems. Please purchase only if you understand that these are used items stored by a private individual. 【Notes】 * Everything in the photos is included. Please check the condition of the items carefully in the photos before purchasing. * I am open to price negotiations and selling the books separately, so feel free to comment. I will take measures to prevent water damage and will carefully package the items for shipping.