The document discusses the need and importance of mathematics textbooks. It states that textbooks play a key role in effective teaching and learning by enabling students to understand concepts, stimulate reflective thinking, and develop problem-solving skills. Textbooks are also useful for teachers as they are written according to the syllabus, provide examples and solutions to help with lesson planning, and save teachers time from preparing their own materials. While textbooks are valuable when used properly, the document cautions that they should not be the only source of instruction or used as a substitute for teaching.