一、教学背景“探究功与速度变化的关系”是人教版新教材第七章第六节内容。新教材引入该节内容的目的是给学生增加探究与体验的机会,提高理论联系实际的水平。本节内容也为下一节“动能和动能定理”的理论推导奠定了一个认识基础,学生在学习动能定理后能比较深刻地认识动能定 First, the teaching background “to explore the relationship between power and speed changes” is a new version of the People’s Education Press Chapter VII of the sixth chapter content. The purpose of the introduction of this section of the new textbook is to give students an opportunity to explore and experience and to increase the level of connection between theory and practice. This section also provides a basis for understanding the theoretical derivation of kinetic energy and kinetic energy theorems in the next section. Students learn more about kinetic energy after learning the kinetic energy theorem