发展学生的空间观念,是小学里的数学教学目的之一。在发展学生空间观念方面,一是使物体的形状、大小、距离、方位的空间形式,让学生从观察、触摸、分析中感知所认识的对象;二是使学生在离开实物、模型的时候,单凭简单图形或文字叙述,就能想象出实际的空间图形。在数学教学中我是这样发展学生空间观念的:一、换位观察学生空间观念的形成,往往受到非本质属性的干扰,“感知”变为“错觉”。如课本上的长方体、圆柱体、圆锥体总是画成标准位置的图形,如下图。教师在黑板上 The development of students' concept of space is one of the aims of mathematics teaching in primary school. In the development of student space concept, the first is to make the object's shape, size, distance, orientation of the spatial form, so that students from the observation, touch, analysis of perceived objects; the second is to enable students to leave the physical, the model, With simple graphics or textual descriptions, you can visualize the actual spatial graphics. In mathematics teaching, I develop the concept of student space in this way: First, the formation of students' perception of space is often disturbed by non-essential attributes and “perception” becomes “illusion.” Such as textbooks on the cuboid, cylinder, cone is always drawn as the standard position of the graphic, as shown below. Teacher at the blackboard