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笔者在教学小学一年级数学下册两位数加减整十数、一位数(不进位)口算方法时偶然发现,这个知识点如果巧妙地借用数形结合进行教学,学生掌握效果会较为明显。既能让学生在有限的时间内迅速达到教学要求,又能为下一步的笔算教学埋下伏笔,起到易学启智的作用。一、抓住基本教学法不放松,引领学生感悟口算方法两位数加减整十数、一位数(不进位)口算方法,例如:口算45+30=,按传统的教学方法,要进行两种
The first grade of mathematics in the teaching of primary school mathematics book two plus or minus the whole number of ten, a number (not carry) port calculation method by chance, this knowledge point if skillfully borrowed combination of teaching, students master the effect will be more obvious . It not only enables students to quickly meet the teaching requirements within a limited time, but also paves the way for the next step teaching, play a role in learning Yi Zhi. First, to seize the basic pedagogy does not relax, leading the students sentiment Myth count method Addition and subtraction of the two digits of the whole number, a number (not carry) port count method, for example: Mouth 45 +30 =, according to the traditional teaching methods, to be carried out Two kinds