This is the "Original Text" from Mori no Mi Publishing, a textbook specifically for cram schools. It's a well-regarded textbook for solidifying the basics. This is a problem set that gathers basic-level problems, so I think it's suitable for home study. Original texts for grades 3-6 are currently on sale. I also have other "Elementary School Textbooks" for sale. #hiroko_elementaryschooltextbooks (← Link to the sales page) I also have "Junior High School Textbooks," "University Entrance Exam Textbooks," "Mathematics for University," and "Dictionaries" for sale. Please understand that these items are stored by a private individual, so there may be minor scratches or stains from storage. This is the latest edition of the arithmetic textbook, and it contains a wealth of practice problems. - Title: Original Text Arithmetic Elementary School 3rd Grade - Condition: Latest Edition, New, Unused - Contents: Practice problems and answer spaces - Number of pages: Not specified Thank you for looking.