所谓直观性原则,是指教师在教学中善于采用多种方式和手段,让学生通过直接的感知,形成丰富的表象,掌握感性认识,使概念的形成过程以事实、实物和表象为基础.由于教学过程中,很多知识比较抽象,让学生难以理解,因此,我们有必要借助生动的直观予以弥补.由于数学科学的抽象性,大多? The so-called principle of intuition means that teachers are good at using a variety of ways and means in teaching so that students can form rich appearances and acquire perceptual knowledge through direct perception, so that the process of forming concepts is based on facts, objects and appearances. In the teaching process, a lot of knowledge is more abstract, make students difficult to understand, therefore, we need to make use of vivid intuition to make up because of the abstraction of mathematical science, mostly?