沟通三种数学语言从形象向抽象转化

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此过程中,需要理解题意,根据题意抽象出数量间的关系,然后列出算式.小学生由于年龄小,知识面窄,因此难于理解题目中抽象的书面语言,容易产生乱套瞎猜解题方法的现象.如加法和乘法叙述中的关键性词语相同,所提的问题往往是“一共是多少?”一些学生难于区分在什么情况下用乘法,在什么情况下用加法.又如“求比一个数多几”和“求两个数相差多少”,对此,学生常常望文生义,作出了见“多”就加、见“少”就减的错误判断. 为了帮助学生正确地解答应用题,可根据小学数学中常见的三种数学语言,即图象 In this process, you need to understand the questions, abstract the relationship between the numbers according to the questions, and then list the formulas.Students with small ages and narrow knowledge make it difficult to understand the abstract written language in the topic, The phenomenon of the method, such as addition and multiplication described in the same key words, the question is often “a total number?” Some students difficult to distinguish between the case of multiplication, under what circumstances with the addition. Too often, students often use the word “Wenjian Shengyi” to make mistakes and misjudgments when they see “more” and “less.” In order to help students correctly solve the problem of application , According to the three math languages ​​common in elementary mathematics, that is, images
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让顾客满意才是生意经。  ——王永庆  1932年,16岁的王永庆在台湾嘉义开了一家米店,从此踏上了艰难的创业之旅。  当时,小小的嘉义共有米店26家,竞争非常激烈。王永庆不知深浅,贸然投身此行,前景很不乐观。他的全部资金只有父亲为他东挪西借来的200元钱,他只能在一条偏僻的巷子里承租一个小小的铺面。由于米店规模小,地处偏僻,又缺乏知名度,在新开张的那段日子里,生意冷冷清清,门可罗雀。  怎么打开