一、问题的提出从具体到抽象,从感性认识发展到理性认识,这是认识论的基本规律．数学学习也不例外,感知是数学学习的初始环节．但是,由于数学的高度抽象性,往往掩盖了它们与具体内容之间的关系,从而忽视了感性认识在数学学习中的应用．但是,学生在领会抽象的内容时,总 First, the question is raised from concrete to abstract, from perceptual knowledge development to rational knowledge. This is the basic law of epistemology. Mathematics learning is no exception, perception is the initial part of mathematics learning. However, due to the high degree of abstraction of mathematics, the relationship between them and specific content is often obscured, thus ignoring the application of perceptual knowledge in mathematics learning. However, when students understand abstract content,