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认真观摩“正比例函数的图像”一课,执教者对所教内容的理解之深刻让笔者受益匪浅。执教者注重数学知识本质的揭示及内在联系的贯通,注重展示研究函数图像及性质的基本过程,特别是对于函数图像这一概念深入浅出的揭示过程使笔者印象深刻。对于概念课,导入知识不应马虎,否则,学生就不知道知识的来龙去脉。1用生成的过程识“图像”首先,要画正比例函数图像,就要弄清正比例函
Seriously observe the “image of the proportional function ” lesson, the author of the teachings of the deep understanding of the content taught me a lot of benefits. The instructors pay attention to the reveal of the nature of mathematics knowledge and the interconnection of internal relations, and pay attention to the basic process of displaying the image and nature of the research function, especially the revelation process that explains the concept of function image. For the concept class, import knowledge should not be sloppy, otherwise, students do not know the context of knowledge. 1 with the generated process knowledge “image ” First of all, to draw a positive proportional function image, we must find out the proportion of letters