初中生二次根式学习情况分析与教学反思  

Learning Analysis and Teaching Reflection on Radical Quadratic Factor in Junior Middle School

作　　者：王鲜凤[1] 王东凯 康淑瑰[1] 王丽[3] 

机构地区：[1]山西大同大学数学与计算机科学学院,山西大同037009 [2]山西省平定县阳胜中学,山西平定045200 [3]山西省大同市第二中学,山西大同037000

出　　处：《教育教学论坛》2017年第30期202-204,共3页Education And Teaching Forum

基　　金：山西省教育科学"十二五"规划项目:基于课例研究的数学专业师范生培养模式研究(GH-13086);教学名师项目:数学专业实践类教学改革研究(MSJG2015004);特色专业建设项目

摘　　要：为了了解二次根式相关概念的学习情况,对45名初中二年级学生进行了测试,了解到:学生二次根式概念的获得和理解受平方根、算数平方根的概念影响;学生对二次根式有意义的条件缺乏理解和掌握;等式(a^(1/2))~2=a(a≥0)的应用不灵活。应注意形成知识网络,关注知识生长点,突破重难点。In order to understand the learning situation of radical quadratic factor concept,45 junior middle school students in grade two were tested.Test has learned,the concept of square root and arithmetic square root influence the attaining and understanding of radical quadratic factor;the smdent.s lack understanding and mastering of the conditions significance to radical quadratic factor;the application of equality （√a）^2=a（a≥0） is not flexible.Teachers should pay attention to the formation of knowledge network,concern about the growth of knowledge,and break the heavy and difficult points.

关 键 词：二次根式 概念教学 平方根 

分 类 号：G632.0[文化科学—教育学]