指数函数在学习函数一般概念后学习,它是一般函数概念的下位概念,因此将其归属到学生认知结构中原有的概括程度与包容范围较高的函数概念之下学习,应当引导学生在一般函数概念及其研究方法的指导下学习指数函数.笔者在指数函数的教学中,遵循学生下位学习的基本规律,以问题为导向,设计贴近学生思维的问题 Exponential function after studying the general concept of learning function, it is the lower concept of the concept of general function, so it belongs to the cognitive structure of the students in the original degree of generalization and inclusion of a higher range of function under the concept of learning, should guide students in general Function concept and its research methods under the guidance of the learning exponential function.In the teaching of exponential function, the author follows the basic rules of student’s under-class learning, problem-oriented design, close to the student’s thinking