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我曾面向全市开了一堂同课异构的观摩课,课题是《任意角的三角函数》。在备课的过程中,为了体现“异构”这个中心思想,和一同开课的同事商量了许久,最终定下我主要用练习法的讲授方式完成课题的讲授。但是,对于一堂新授课来说,在学生对所学知识没有掌握的情况下用练习法相对是有难度的。思量再三,并反复听取同事的建议,我最后决定把重心放在学生的预习工作上。但是问题随之也来。
I have opened a lesson for the city’s heterogeneous observation class, the subject is the “trigonometric function of any angle.” In preparation for the course, in order to reflect the “heterogeneous ” the central idea, and colleagues started together for a long time to discuss, I finally set the practice method of teaching to complete the subject taught. However, it is relatively difficult for a new lecture to use the practice method without the knowledge of the student. Think twice, and repeatedly listen to my colleagues ’suggestions, I finally decided to focus on the students’ preparation work. But problems come along as well.