This is the "Original Text" from Mori no Mi Publishing, a textbook specifically for cram schools. It is a well-regarded textbook suitable for solidifying the basics. As it is a collection of basic-level problems, I think it is suitable for home study. Original texts for grades 3-6 are currently on sale. I also have other "Elementary School Textbooks" for sale. #hiroko_elementary_school_textbooks (←Linked 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. The latest edition of the math workbook, unused and perfect for studying. - Title: Original Text Arithmetic Elementary School 6th Grade - Condition: New, Unused - Contents: Math problem collection - Format: Workbook format - Edition: Latest edition Thank you for looking.