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本文是笔者给人教版八年级下册“分式”的两点编写建议.建议1:“分式的值为零的条件”应该编写进教材人教版教材第十五章分式,“15.1.1从分数到分式”一节,采用类比的方法,引入分式的概念,进而研究分式有意义的条件.至此,戛然而止,总让人意犹未尽.笔者在讲这节课时,又补充探索了“分式的值为零的条件”.因为这个知识是各地中考考点之一,在课堂上进行探索比让学生在课后遇到相应的题目再研究要好得多.
This article is the author of the teachings of the eighth grade of the next volume “sub-type ” two points to prepare a suggestion.Recommendation 1: “fractional value of zero conditions ” should be written into the textbook PEP textbook fifteenth chapter Fractional, “15.1.1 from fraction to fractional ” section, the use of analogy, the introduction of the concept of fractional, and then study the significance of fractional conditions. At this point, the abrupt end, the total is quite unpleasant. Speaking of this lesson, but also added to explore the “fractional value of zero conditions.” Because this knowledge is one of the test centers around the place, to explore in the classroom than let students encounter problems in the class after Research is much better.