This document outlines the qualities of a good mathematics textbook. It discusses 7 key qualities: 1) physical features like paper quality, binding, printing and size; 2) qualifications of authors; 3) content that is child-centered, logically organized, and aligned to curriculum; 4) organization and presentation that facilitates different learning approaches; 5) use of clear and simple language; 6) inclusion of accurate illustrations and well-graded exercises; and 7) general qualities like price, availability, and alignment to educational aims. Overall, a good textbook aids teaching but should not be the only instructional material, and mastering mathematics ultimately depends on having a good teacher.