高中数学人教版第二册下(B)第九章第九节第三课时介绍了棱锥的概念和性质。这是在学生学习了直线和平面的基础知识,掌握了棱柱的概念和性质的基础上进一步研究多面体的又一几何体。学习该节内容进一步培养学生形成空间观念和提高学生逻辑思维能力。本人结合多媒体课件和实物模型进行教学演示,利用生活中常见的棱锥模型引入课题,联系上一课时所学棱柱的概念类比得 The concept and nature of pyramids were introduced in the third lesson of the second chapter of the high school mathematics teaching booklet (B) and the ninth chapter. This is a further study of the geometry of the polyhedron based on the students’ basic knowledge of the straight line and the plane and the concept and nature of the prism. Learning the contents of this section will further train students to form spatial concepts and improve their logical thinking skills. I used a combination of multimedia courseware and mock-ups for teaching presentations, used pyramid models that were common in life to introduce topics, and linked the concepts of the prisms I learned during the previous lesson.