论文部分内容阅读
1.课前思考笔者今年教高一,在讲授“幂函数”时,想起前两届教高三时复习幂函数的情况:大多数学生只知道幂函数的概念,不熟悉幂函数的性质,给出一个幂函数也不能准确得出函数的图像.这些情况的发生,笔者分析可能有以下原因:①从新授课到高三复习的时间较长,学生因时间长而遗忘;②幂函数在江苏高考是A级(了解)要求,学生因巩固练习少而遗忘;③不少教师教学方法不妥,学生因理解不深刻而遗忘对于幂函数的图像与性质,能否通过改进教学方法,提高教学效率而让学生经久不忘呢?笔者反复
1. Pre-class thinking I teach high one this year, teaching “power function ”, think of the previous two teaching high school review power function: most students only know the concept of power function, not familiar with the nature of the power function , Given a power function can not accurately derive the function of the image.The occurrence of these circumstances, the author analysis may have the following reasons: ① from the new lectures to the third year review a long time, because students for a long time and forgotten; ② power function in Jiangsu The college entrance examination is A-level (understanding) requirements, because students consolidate practice less and forgotten; ③ many teachers teaching improper method, the students because of the understanding is not profound and forgotten for the power function of the image and nature, can improve teaching methods, improve teaching Efficiency and let students forget it? I repeated