教材是一种特殊的出版物,它作为知识的载体,作为传播知识的主要工具,对知识的积累、继承、传播和发展有着十分重要的功能和作用。如果没有教材这种载体,知识就不可能系统地形成、积累和发展。另外,教材又以系统性强、知识容量大、涉及面广、携带方便、投资少等优点较其他学习媒 Textbook is a kind of special publication. It serves as the carrier of knowledge and serves as the main tool of dissemination of knowledge. It plays a very important role in the accumulation, inheritance, dissemination and development of knowledge. Without such a carrier, knowledge can not be systematically formed, accumulated and developed. In addition, the textbooks are more systematic, knowledgeable, involving a wide range, easy to carry, less investment and other advantages than other learning media