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全区初中数学培训会几何观摩课教案银川十五中洪玉洁课时安排：一课时一、教学内容：圆锥的侧面展开图二、教学要求１．使学生了解圆锥的特征，并能根据其特征画出它的表面展开图．２．使学生掌握圆锥表面积的有关计算和简单应用．３．培养学生初步的空间观念，树立把空间...
The junior high school mathematics training meeting in the region to observe the geometry teaching lesson Yinchuan fifteenth in Hong Yujie class schedule: a lesson time, teaching content: side of the cone to expand Figure 2, teaching requirements 1. Enable students to understand the characteristics of the cone, and according to its characteristics to draw its surface expansion. 2. Make students master the relevant calculation and simple application of the conical surface area. 3. Cultivate students’ preliminary concept of space and establish space...