一、学情分析本节课的授课对象是四星级重点高中重点班学生,基础较好,思维较活跃,有一定的观察、分析能力及合作学习的基础.从已有的知识看学生已经在初中从点的对应关系研究过二次函数的图象变换,在高中指数对数学习中知道了函数y=f(x)和函数y=f(x+a)图象之间的关系.二、教材分析 First, the analysis of academic situation This lesson is the focus of teaching four-star key high school students focus on better foundation, more active thinking, a certain degree of observation, analytical skills and cooperative learning base from the existing knowledge of students have been The image transformation of the quadratic function is studied from the correspondence of points in junior high school. The relationship between the function y = f (x) and the function y = f (x + a) is known in logarithmically high school exponential learning. Second, textbook analysis