一年级数学上册第5单元6_10的认识和加减法6和7的加减法练习教案2新人教版.doc

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1 -6、7 的加减法练习教学目标:1、让学生感受到生活中充满数学。2、进一步掌握 6、7 的加减法,并能正确迅速地计算。3、巩固复习图画应用题。重难点:掌握方法,能正确、迅速地。培养数感。教学过程:1、练习九的第 8 题。先让学生明白题意,然后动笔连,完成后让学生说一说自己连线的理由。2、练习九的第 9 题。(1)放手让学生自己选择,自己动手。(2)两人一组进行交流,一人拿卡片另一人算。(3)集体交流,如有的学生用其中一个数和 0 组成一个大数减小数的算式,要给予鼓励。3、练习九的第 10 题。可以用比赛形式进行:如看谁做得对,看谁能在 2 分钟之内算完,然后让学生独立做,最后集体交流、订正,抽出一个加法算式,一个减法算式,说说口算方法。4、练习九的第 11 题。先让学生自己算,然后交流,引导学生观察得出:当一个加数不变,另一个加数一个比一个大时,所得的数也一个比一个大。当另一个加数一个比一个小时,所得的数就一个比一个小。5、练习九的第 12 题。先让学生仔细观察图,明白图意,然后列式计算,完成后让学生说说图意。- 2 -6、教材第 45 页的“生活中的数学”。(1)我们学过了 0-7 各数,我们身边有哪些这样的数呢?(2)同桌互说。(3)集体交流:我家有 3 口人。我在一年级 1 班。我今年 7 岁了。我们这一组 6 个人

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