随着计算机辅助教学的广泛应用,利用几何画板软件(可在网上下载)能将一次函数图像的性质及其与参数变化时图像随着的变化在多媒体上表现得淋漓尽致,非常方便地做到“数”与“形”的完美结合,既有形象的图形展示,又有定量的数值研究,具体操作如下:(1)打开几何画板远中图表-定义坐标系(如图1)。 With the wide application of computer-assisted teaching, the use of Geometry Sketchpad software (available for download on the Internet) can be used to describe the nature of a function image and the change of the image with the change of parameters in multimedia. It is very convenient to do it. The perfect combination of “number” and “shape”, both graphic display of the image, and quantitative numerical research, the specific operation is as follows: (1) open the geometric drawing board far-away chart - define the coordinate system (Figure 1) .