一、概念教学的创新——操作实践1.圆柱、圆锥、圆台的概念教学在教学中我先展示相关实物,进而引入学生学习的热情,让学生对抽象的概念进行直观化思维、想象.例如,在讲圆柱时,我通过多媒体展示我们日常生活中用的圆柱形物品,如童装奶粉、工厂的大烟囱等;圆锥我便引入漏斗、跳棋等;圆台我引入了圆台形水 First, the concept of teaching innovation - Practice 1. Cylindrical, conical, concentric concept teaching In teaching, I first show the related objects, and then introduce the enthusiasm of students to learn, so that students abstract the concept of intuitive thinking and imagination. When talking about columns, I used multimedia to display the cylindrical objects used in our daily life, such as children’s milk powder, the factory’s large chimney, etc. I introduced funnels, checkers and so on to the cone.