曲边梯形的面积是“定积分的概念”的起始课,为引入定积分的概念和体会定积分的基本思想打下基础.采用教师设疑引导、学生自主探究的方法,让学生在自主探究、合作交流中经历求曲边梯形面积的全过程,并结合形象、直观的动画演示帮助学生理解抽象思想,进而总结概括形成一般方法. The area of ​​trapezoid trapezoid is the starting point of “the concept of definite integral”, which lays the foundation for the introduction of the concept of definite integral and the basic idea of ​​definite integral.Using the method of teacher's guidance, student's self-exploration, Self-exploration, cooperation and exchange experience through the trapezoid area of ​​the whole process, combined with the image, intuitive animation demonstration to help students understand the abstract thinking, and then summarize the formation of general methods.