Textbooks to learn the basics and applications of arithmetic in a short time. ⚫︎ A book that explains 6 years of elementary school arithmetic in 6 hours ⚫︎ This is how you do it! A book for dads and moms to teach their children arithmetic Set of 2 books ☆ Suitable for all elementary school grades ※ There are no scratches or stains, but due to long-term home storage, the book "Teaching Arithmetic" appears slightly yellowed. ※ If you have any other concerns, please feel free to comment. I will add photos if you comment. ※ Basically, no price reduction is possible, but discounts may be available for bulk purchases, so please comment. ⚠️ Please be sure to read the profile of those who are purchasing or considering purchasing. ● There are no smokers. ● The items for sale are stored at home. ● We check the items for dirt and scratches, but there may be oversights due to amateur inspection. Also, please refrain from purchasing if you are looking for a perfect product or are nervous, as it is a used item that has been in someone's hands once. ● We cannot accept returns or refunds for complaints or differences in image after purchase, so please ask any questions you may have before purchasing and make sure you are satisfied before purchasing. ⚫︎ Packaging is basically simple packaging and recycled packaging. We will ship the items with care, but please refrain from purchasing if you are particular about the condition of the packaging materials.