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众所周知,数学是研究现实世界中,数量关系和空间形式的科学。“数”和“形”是数学中最基本的两个概念,两者具有相对独立的特性和表征形式,又有着千丝万缕的联系。但在教学实践中由于缺乏空间形式的观察和训练,许多学生立体几何的学习往往很差,所以,我们必须讲究数形结合,以提高教学效果。
As we all know, mathematics is the science that studies the real world, quantity relations and spatial forms. “Number” and “Form” are the two basic concepts in mathematics. They have relatively independent characteristics and characterization forms, and they are inextricably linked. However, in the teaching practice, due to the lack of spatial observation and training, many students often have poor learning of the three-dimensional geometry. Therefore, we must pay attention to the combination of numbers and shapes in order to improve teaching effectiveness.