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2布置课后学习内容课后小结本节课的教学重点是让学生掌握假分数化成整数或带分数的方法教学主要采用方法算理,概念结合,帮助学生掌握方法假分数化成整数或带分数的方法,既可以由分数与除法的关系导出,又可以根据分数的意义来解释假分数化成整数或带分数的结果,结合直观图解释教学时,先让学生探索交流,感受方法的多样性,在交流的过程中,学生优化各自的想法,教师做“画龙点睛”式的引导课后习题1写出下面的带分数八又七分之三写作:_____________十五又六分之一写作:_____________二十三又四分之三写作:_____________1读出下面的带分数3 1/8读作:_____________70 3/57读作:_____________2 4/79读作:_____________2

because China needs more and more land to build citiesCbecause there are not enough farmers to work on the landDbecause the other land cannot be used for agriculture(2) Fertilisation is a technique that is used to ______Amake poor soil betterBmake wet land drierCmake dry land betterDgrow vegetables with their rootsin water instead of earth(3) Modern agriculture means finding ways to _____

四、思维训练1、李红买20个6角的练习本和30支8角鹅铅笔(1)一共要付多少元(2)付出50元,应找回多少元2、动脑筋()×30=900 40×()=2000 80×()=32000板书设计:整十、整百数乘整十数的口算方法先用表内乘法把两个因数0前面的数相乘,再看两个因数末尾一共有几个0,就在 乘积的末尾添上几个0教学反思:在水果超市的情境中,学生感受到了数学与生活的息息相关,在复习整十数乘一位数和表内乘法的基础上,学生探索两位数乘一位数(进位)的口算方法,在此基础上知识迁移,自主探索几百几十乘一位数的口算方法两位数乘整十数的口算及几百几十乘整十数的口算方法在已有知识的基础上在对比中总结出方法

—Lisa isAnd revise the adjectives about describing the appearance and personalityof a personLearning action tips: Preview the words on Page17-18 in the word listStudents read the words by phonetic symbols, thenunderline new words in the text and mark the Chinese meaningAt last finish thetask in 1a【知识链接】clearly adv
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