新人教版三年级数学上册《分数的简单应用-(第2课时)》ppt教学课件
合集下载
相关主题
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
PPT素材:www.1ppt.com/sucai/ PPT图表:www.1ppt.com/tubiao/ PPT教程: www.1ppt.com/powerpoint/ 个人简历:www.1ppt.com/jianli/ 教案下载:www.1ppt.com/jiaoan/ PPT课件:www.1ppt.com/kejian/ 数学课件:www.1ppt.com/kejian/shu xue/ 美术课件:www.1ppt.com/kejian/me ishu/ 物理课件:www.1ppt.com/kejian/wul i/ 生物课件:www.1ppt.com/kejian/she ngwu/ 历史课件:www.1ppt.com/kejian/lish i/
PPT素材:www.1ppt.com/sucai/ PPT图表:www.1ppt.com/tubiao/ PPT教程: www.1ppt.com/பைடு நூலகம்owerpoint/ 个人简历:www.1ppt.com/jianli/ 教案下载:www.1ppt.com/jiaoan/ PPT课件:www.1ppt.com/kejian/ 数学课件:www.1ppt.com/kejian/shu xue/ 美术课件:www.1ppt.com/kejian/me ishu/ 物理课件:www.1ppt.com/kejian/wul i/ 生物课件:www.1ppt.com/kejian/she ngwu/ 历史课件:www.1ppt.com/kejian/lish i/
1
2
4
4
情境导入
1
2
有12名学生,其中 是女3生, 是男生。3男女生
各有多少人?
怎样求出男女生人数呢?
自主探究
PPT模板:www.1ppt.com/moban/ PPT背景:www.1ppt.com/beijing/ PPT下载:www.1ppt.com/xiazai/ 资料下载:www.1ppt.com/ziliao/ 试卷下载:www.1ppt.com/shiti/ 手抄报:www.1ppt.com/shouchaobao/ 语文课件:www.1ppt.com/kejian/yuw en/ 英语课件:www.1ppt.com/kejian/ying yu/ 科学课件:www.1ppt.com/kejian/kexu e/ 化学课件:www.1ppt.com/kejian/huaxue/ 地理课件:www.1ppt.com/kejian/dili/
女生人数:
12÷3=4(人)
男生人数:
12÷3=4(人) 4×2=8(人)
答:女生有4人,男生有8人。
男生占总数的三分之二。
学以致用 图书角有45本图书。其中 是故事2书,故事书有多少本? 5
45÷5=9(本)
2×9=18(本)
答:故事书有18本。
总结提升
求一个数的几分之几是多少, 用总数除以分数的分母求出一 份,再用每份数乘分子求出几 份是多少。
分数的初步认识
分数的简单应用
第2课时
复习旧知
有8个圆,把其中的四分之一涂上蓝色,四分之二涂上粉色。
PPT模板:www.1ppt.com/moban/ PPT背景:www.1ppt.com/beijing/ PPT下载:www.1ppt.com/xiazai/ 资料下载:www.1ppt.com/ziliao/ 试卷下载:www.1ppt.com/shiti/ 手抄报:www.1ppt.com/shouchaobao/ 语文课件:www.1ppt.com/kejian/yuw en/ 英语课件:www.1ppt.com/kejian/ying yu/ 科学课件:www.1ppt.com/kejian/kexu e/ 化学课件:www.1ppt.com/kejian/huaxue/ 地理课件:www.1ppt.com/kejian/dili/
同学们,这节课你们都学会了哪些知识?
PPT素材:www.1ppt.com/sucai/ PPT图表:www.1ppt.com/tubiao/ PPT教程: www.1ppt.com/powerpoint/ 个人简历:www.1ppt.com/jianli/ 教案下载:www.1ppt.com/jiaoan/ PPT课件:www.1ppt.com/kejian/ 数学课件:www.1ppt.com/kejian/shu xue/ 美术课件:www.1ppt.com/kejian/me ishu/ 物理课件:www.1ppt.com/kejian/wul i/ 生物课件:www.1ppt.com/kejian/she ngwu/ 历史课件:www.1ppt.com/kejian/lish i/
作业设计
课本102页 练习二十二 第5、6题
课堂小结
通过本节课的学习,你有什么收获?
总结收获
PPT模板:www.1ppt.com/moban/ PPT背景:www.1ppt.com/beijing/ PPT下载:www.1ppt.com/xiazai/ 资料下载:www.1ppt.com/ziliao/ 试卷下载:www.1ppt.com/shiti/ 手抄报:www.1ppt.com/shouchaobao/ 语文课件:www.1ppt.com/kejian/yuw en/ 英语课件:www.1ppt.com/kejian/ying yu/ 科学课件:www.1ppt.com/kejian/kexu e/ 化学课件:www.1ppt.com/kejian/huaxue/ 地理课件:www.1ppt.com/kejian/dili/