量比·倍比·率比歙县溪头中心小学邵春华“比”概念的感知，从孩子认识事物开始，就有了体验。如大小、多少。“比”概念的理解及应用贯穿了整个小学阶段，从低年级的量比直至高年级的率比。但在教学实践中，教师颇感棘手的仍是这方面的内容，集中体现在：题意理解不透、... The ratio of the ratio of times to the ratio of the ratio of the perception of the “comparative” concept of Shao Chunhua at the Xitou Central Elementary School in Qixian County. From the time the child knows something, there is an experience. Such as size, how much. The understanding and application of the “ratio” concept runs through the entire elementary school period, from the ratio of the lower grades to the higher grades. However, in the teaching practice, the teachers are still quite troublesome in this regard, and they are concentrated in the following: