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数学教学中把相似、相反、易混的习题编成题组进行整体教学是加大教学密度、减缓思维难度和提高学生解题水平、发展思维能力的有效途径。现以分数应用题教学为例,谈谈构造组题的做法。一、着眼分化点设计题组学生初学分数应用题,往往不能很好地区分量、率,或者单位“1”的量找不准,导致分析不当,解题失误。说明学生的知识没有得到分化,感知还很笼统、
Mathematic teaching, the opposite, easy to mix exercises into questions group to teach the overall teaching is to increase teaching density, slow down the thinking and improve students' problem-solving level, the development of thinking ability is an effective way. Now the application of teaching questions as an example, to talk about the construction of group practice. First, focus on the design point of differentiation points Students beginners score application questions, often can not distinguish between the amount, rate, or unit “1” amount of uncertainty, resulting in improper analysis, problem-solving mistakes. Indicating that students have not been differentiated knowledge, perception is still very general,