小学三年级数学两步解决实际问题既是教学中一个重点,又是教学中的一个难点。为突破这一重难点,同时针对三年级学生理解能力差,识字量少,语言表达能力不强的特点。在这里介绍一种新的解决方案——单位制表法。单位制表法是根据数学问题中数量之间的比例关系制作用于解决问题的一种表。其原理是比例的基本性质,即在比例中,两个外项的积等于两个内项 Third grade primary school mathematics two steps to solve practical problems is not only a teaching focus, but also a difficult teaching. To break through this heavy difficulty, at the same time for third graders to understand poor ability, literacy, language proficiency is not strong. Here is a new solution introduced - the unit tabulation method. The unit tabulation method is based on the mathematical relationship between the number of the ratio between the production of a solution to the problem of a table. The rationale is the basic nature of the ratio, ie in the ratio the product of two outer terms equals two inner terms