要重视数学教学语言的准确使用张修文教师的教学语言是教师传授知识、教育学生最直接的工具，是一门很实在、很丰富的艺术．它除了具有简洁易懂、启发性、逻辑性、趣味性等特点外．更重要的是要准确无误。要使教学语言准确无误，必须概念清楚。例如：“负号乘以正号得负号... We must pay attention to the accurate use of mathematics teaching language. Zhang Xiuwen’s teacher’s teaching language is the most direct tool for teachers to impart knowledge and educate students. It is a very real and abundant art. In addition to its simple and easy to understand, enlightening, logical, interesting and other characteristics. More importantly, it must be accurate. To make the language of instruction accurate, the concept must be clear. For example: "A negative sign multiplied by a positive sign has a negative sign...