These math books are perfect for diving into historical mathematical knowledge. To use them, simply open the pages and start reading through the arithmetic concepts. When handling the books, be gentle due to their age. The bindings are loose, so avoid bending the books too much. To maintain them, store the books in a dry and cool place. Keep them away from direct sunlight as it can further yellow the pages. If you want to clean the covers, use a soft, dry cloth to gently wipe the dirt off. Enjoy exploring the old - fashioned math teachings in these unique books!
