新课程标准在学段目标中指出:“在探索图形的性质、图形的变换以及平面图形与空间几何体的相互转换等活动过程中,初步建立空间观念,发展几何直觉.”“尝试从不同角度寻求解决问题的方法,并能有效地解决问题,尝试评价不同方法之间的差异.”在学习中若能注意上述问题则能提高数学学习的能力. The new curriculum standard points out in the learning objectives: “In the exploration of the nature of graphics, the transformation of graphics, and the mutual transformation of plane graphics and spatial geometry, the initial concept of space was developed and the geometric intuition was developed.” “Trying to solve from different angles The method of the problem, and can effectively solve the problem, try to evaluate the differences between the different methods.” If you can pay attention to the above issues in learning can improve the ability of mathematics learning.