基于最近发展区理论巧解浓度问题

Solving Concentration Problem Skillfully Based on Nearest Development Zone Theory

基于学生的最近发展区,以百分数应用题中的"浓度问题"为例,归纳解题方法。文章从浓度问题相关概念入手,规范分析模式,以一般的浓度问题(其中包括加浓问题、稀释问题、浓缩问题、混合问题)和特殊的换取问题分两大类展开,分别结合例题进行分析解答,希望能予以各位读者一些教学启示。

Based on the students’recent development zone,this paper takes the concentration problem in percentage application questions as an example,and summarizes the solution methods.Starting from the concepts of concentration problem,this paper standardizes the analysis model,and divides the general concentration problem(including enrichment problem,dilution problem,concentration problem,mixed problem)and the special exchange problem into two categories,and then analyses and answers them respectively with examples,hoping to give some teaching inspiration to readers.