函数的表示法（Representation of function）.docVIP

函数的表示法（Representation of function） Representation of function Whole design Teaching analysis Different representations began to pay more attention to the function of textbooks from the introduction of the concept of function: analytic method, image method, list method. Different methods can enrich the understanding of the function of the function, to help understand the abstract function concept. Especially in the environment of information technology, makes the function combined with the shape and the number of the more fully the performance of the students through the learning function to better understand the combination of this method of mathematical thought important. Therefore, in the study of function, to give full play to the role of visual image. In the image, but also pay attention to the exact algebraic characterization of thinking and expression. The textbook mapping as an extension function. This traditional approach has changed the logical order. This treatment is mainly to better link the learning of junior middle school, students will focus more on understanding the concept of function, at the same time, It also reflects the thinking process from the special to the general Three-dimensional target 1. to understand some basic functions of the representation (list method, image method, analytic method), will be based on different actual situation, select the appropriate method of representing functions, set up the application of the combination of the idea of figure 2., through specific examples to understand the simple segmentation function, and can be applied simply to improve the application function to solve practical problems, increase the interest in learning mathematics 3., you can draw some simple function images by tracing points, and train students to apply the function image to solve problems 4. understand the concept of mapping method and, to determine the correspondence is a mapping using the concept of mapping relationship, feeling in the