在一次“青年教师高效课堂优课评比活动”中,笔者有幸观摩了张昊东老师开设的示范课:函数y=Asin(ωx+φ)的图像。本节课荣获活动一等奖,这是一节精彩纷呈,令人耳目一新的优质课,这节课的可贵之处在于:教者能合理使用现代化的教学手段,注重学生的认知规律,突出知识的发生发展过程,层层递进;学生探究活动频繁,教学方法灵活多变,学生的 In a “Young Teachers Efficient Classroom Assessment Activities ”, I was fortunate enough to observe Zhang Haodong teacher demonstration class: Function y = Asin (ωx + φ) image. This class won the first prize of the activity. This is a brilliant and refreshing high quality class. The valuable part of this lesson is that the teacher can make rational use of the modern teaching methods, pay attention to the students’ cognitive rules, The occurrence and development of knowledge, progressively; students explore activities frequently, flexible teaching methods, the students