本节课是在认知理论指导下,结合高一学生认知特点设计而成.在牛顿第二定律应用的教学设计中,考虑到临界问题本身较为抽象,学生理解起来有一定难度,所以在问题情景的选择上,选择高一学生熟悉的、容易接受的简单情景.整节课师生互动流畅,达到了学生自主学习、高效学习的目的. This lesson is under the guidance of cognitive theory, combined with the cognitive characteristics of a high school students designed in the application of Newton’s second law of instructional design, taking into account the critical problem itself is more abstract, students understand that there is a certain degree of difficulty, so in The choice of the situation of the problem, the high school students choose a familiar, easy to accept the simple scene.The whole section of teachers and students smooth interaction, to achieve the purpose of student learning, efficient learning.