论文部分内容阅读
一、设计背景求比值与化简比是两个不同的概念,在教学中往往作为两节课的内容安排教学.但多数教师主张把它们合并在一个课时内进行教学.理由是:(1)这两个概念学生极容易混淆,放在同一节课内教学便于比较,有利于当堂巩固知识,有利于克服“负迁移”的消极影响;(2)两个概念分开教学稍感单薄,合在一起可加大课堂容量,有利于提高课堂教学效率.因此,在设计练习的时候,我把这两个内容合在一起设置习题.另外,关于最简整数比的书写形式,例题采用的是最简分数型,但许多有经验的教师认为,应该兼顾
First, the design background Comparison and simplification ratio are two different concepts, teaching is often arranged as the contents of two classes of teaching, but most teachers advocate the combination of them in a class time teaching for the following reasons: (1) These two concepts are extremely confusing and can be easily compared with one another in the same lesson, which is conducive to consolidating knowledge and helping to overcome the negative influence of “negative migration.” (2) , Together can increase the classroom capacity, is conducive to improving the efficiency of classroom teaching.Therefore, in the design practice, I put these two contents together to set exercises.In addition, the simplest ratio of the written form, example The simplest fractional type, but many experienced teachers believe that should be taken into account