The document outlines the essential qualities of a mathematics textbook as per the Tamil Nadu Textbook Corporation, categorized into physical features, authorship, content, organization, language, exercises, and general attributes. Key criteria include high-quality materials, experienced authors, engaging content aligned with syllabi, logical organization, clear language, and appropriate exercises to enhance student learning. Additional recommendations highlight the necessity for accurate illustrations, grading of exercises, and the inclusion of supplementary materials like tables and appendices.