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数量关系是学生解决实际问题的基本条件,是发展学生思维能力、培养学生创新能力的有力载体,学生在解决问题的过程中需要数量关系作理论基础和思维支撑。因此,解决问题教学的重要一环,就是要使学生进一步理解和掌握数量关系。一、数量关系是解题的条件学生在解决问题时都有意或无意地运用着数量关系,一是根据数量关系推断先算什么,后算什么;二是根据数量关系确定每步用什么方法算,如何列式。数量关系为解决问题
The relationship between quantity and quantity is the basic condition for students to solve practical problems. It is a powerful carrier for developing students ’thinking ability and cultivating students’ innovative ability. Students need quantity relations for theoretical basis and thinking support in the process of problem solving. Therefore, an important part of the teaching of problem solving is to enable students to further understand and master the quantitative relationship. First, the number of relations is the solution conditions Students in the solution of the problem are intentional or unintentional use of the quantitative relationship, first, based on the number of relations inferred what to count, after what is calculated; Second, according to the quantitative relationship between each step to determine what method of calculation How to list The number of relations to solve the problem