1教学目标(1)通过自主预习分析五个函数——y=x、y=x~(1/2)、y=x~2、y=x~(-1)、y=x~33解析式的特征并观察图像规律,归纳幂函数的概念和图像性质,充分暴露学生的思维,使其体会从特殊到一般的思维过程和数形结合的思想方法;(2)通过自主设计问题,分组合作,培养学生积极思考、主动探究新知的学习习惯;(3)通过归纳小结和课外拓展探究,完善学生对知识技能和思想方法的系统梳理。 1 Teaching Objectives (1) Analyze five functions through independent previewing - y = x, y = x ~ (1/2), y = x ~ 2, y = x ~ Style characteristics and observe the law of the image, summarize the concept of power function and the nature of the image, fully expose the students’ thinking, to make them experience the thinking method from the special to the general combination of the number and shape; (2) Cooperation, cultivate positive thinking of students, take the initiative to explore new learning habits; (3) by inductive summary and extra-curricular exploration to improve students’ knowledge and skills and ways of thinking systematically comb.