10 AirPPT及课堂实录内容

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10 AirPPT及课堂实录内容

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关键词:10 AirPPT及课堂实录内容

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第二课时

课型:阅读课

时间:40分钟

课时话题:Air 的基本特征,污染带来的危害。

1. 情境相关性分析:第一课时用谜语导入的空气,并且分析了空气的特征及其受污染的原因,在第二课时中继续沿着这条主线,进一步学习look and learn,用更多的新词汇与新句型来表达空气对人类的重要性,进一步拓展到生活中的空气污染危害。

2. 语言相关性分析:第一课时学生已经掌握句型It keeps them high in the sky并以此来表达空气的功能特征。本课时在此基础上增加表达观点的句型

It makes the air dirty. Trees keep the air clean. Why is air important ?

教学目标:

1.帮助学生学习并关注

Look and learn 中的单词

2. 通过

Say and act 的情景对话,帮助学生理解核心句型的含义和用法。

3. 能用

What makes the air dirty ? 引发有关空气污染原因的讨论。

4. 能用

What should/ must /can/ we do to keep the air clean ? 解决现实中遇到的空气污染问题

5. 通过对话表演,帮助学生操练句型,引导学生关注环保和空气污染问题,树立环保意识。

教学重难点:

教学重点:理解拓展词汇;掌握和运用核心句型。

词汇:factory, smoke, dirty, clean, fresh, plant, trees. 句型:It makes the air dirty. Trees keep the air clean。Why is air important?

教学难点:

1.

句子:一些不明气体污染空气并对我们人体造成的伤害

Some unknown gases polluted the air and harmful to us. 2.

能通过讨论,进一步加深空气污染的危害的认识。

Air pollution affects our health and prevents the normal growth of plants. 教学过程:

步骤

目的

营造学习气氛。

教师活动/方法

学生活动/学法

条件/手段

1. 师生问好。

谜语:

S1:Is it a ----- ?

1.自由谈话

1.增进师生情感,1.师生问好。

2. 以猜谜语为引2.激发学生的兴趣:让学生2.学生边读边猜2.ppt展现内容

子. 激发学生的读和猜谜语:

兴趣,活跃课堂It goes up in the air when 气氛。

there is wind.

3.让学生复习描述上一课学习的有关空气的说法。

It comes down when there is

no wind. What is it ? 教师边评价边给出答案。

It is round and colourful. when there is heat.

What is it ? 教师边评价边给出答案。

It comes down slowly from the sky. A large piece of cloth keeps the air in .Air keeps it from falling quickly. What is it ? 教师边评价边给出答案。

It moves on water. Air pushes it to go. It goes quickly when the wind is strong. It cannot go when there is no wind.

What is it ? 教师边评价边给出答案。

3.教师与学生谈论上一课时学习过的描述空气的说法。

Air has no colour or shape.

S2: Is it a ---- ?

S3: Is it a ----?

S4: Is it a ----?

Children like to play with it.

•It goes up in the air when there is wind.•It comes down when there is no wind.•Children like to play with it.•What is it ?•It is a kite.

It goes up slowly to the sky

It is round and colourful.It goes up slowly to the sky when there is heat. What is it ?It is a hot-air balloon.

It comes down slowly from the sky. A large piece of cloth keeps the air in .Air keeps it from falling quickly.What is it ?It is a parachute (降落伞)It moves on water. Air pushes it to go. It goes quickly when the wind is strong.It cannot go when there is no wind. What is it ?It is a sailing boat.3.让学生介绍空

It has no smell or taste. We can’t see it but we can feel it. It’s everywhere.

Air is important to people, animals and plants. It keeps all living things alive. It keeps kites, balloons, planes and birds high in the sky too.

Air has no colourorshape. It has no smell ortaste. We can’t see it but we can feel it. It’s everywhere. Air is important to people, animals and plants. It keepsall living things alive.It keepskites, balloons, planes and birds high in the sky too.

1. 在进行阅读策1. 教师适时提出问题并板略指导的同时,书:

Why is air important ? 交替进行语言归It keeps _________ and 纳总结的指导,_________high in the sky. 让活动形式为语It keeps ______________, ____________ and plants 言服务。

alive.

教师继续提出问题:

What makes the air dirty ?

The smoke from

_____________ _____________,

_____________

_________________.

The air is ________ in the street.

The air is ________ and

________ in the park.

There are a lot of 2.阅读策略的指____________ in it. 导:提出难点问Trees keep the air ____________ 题

Did you hear the news that some students became sick

after breathing in some 1. 学生跟同桌1. ppt展现内容

讨论并回答问题。

2.学生继续阅读,

表达自己的观点。

S1:

S2:

2. ppt展现内容

Whyisairimportant?Whyisairimportant?Itkeeps_________,_________,______and___________highinthesky.Itkeeps______________,____________andplantsalive.Itkeeps_________,_________,______and___________highinthesky.Itkeeps______________,____________andplantsalive.

3.核心句型的运unknown gases ? 用成为学生表达

观点的内在需

求。

形式多样的词汇

释义拓展学生的T: Do you know PM 2.5 ?

教师适时引出空气污染问知识面。通过数题。

据信息比对,

PM2.5让学生了

解它的含义和现

实生活真的存在

的真实性,通过教师引出有关污染的词:新闻说明让学生polluted---pollution,

了解unknow 对我们健康的危害词:

harmful, prevent

gases的词义,提

高学生的理解能

力。

harm---harmful

4. 通过观看视polluted---pollution,

频,唤醒学生对空气污染对人体的危害性的关注,结合生活体验更能让学生发散思维表达观点。

5. 词汇学法指导:指导学生学会从已知词汇推论总结出新词汇的读音和含义,学生在老师的

帮助下理解拓

展词汇became sick和短语:after breathing in some unknow gases,并更加认识不明气体的

危害。

4.学生观看视频。

学生思考讨论:

5.学生在老师的帮助下理解并朗读:

Some unknown gases polluted

Did you hear the news that some students became sick after breathing in some unknown gases ?The smoke in the street comes carsbusesfrom the _______, ___________ a factoryand _______________dirtyThe air is ________ in the street.freshcleanThe air is ________ and ________ in the park.treesThere are a lot of ____________ in it.cleanTrees keep the air ____________

降低学生认读理解拓展词汇的难度。

形式多样的词汇释义拓展学生的知识面。让学生了解health的含义;提高学生的理解能力。

the Air air and harmful to us. pollution our and the affects health prevents of plants.

根据已知的英语词句理解。

normal growth 1. 教师布置读后任务:四1. 1.学生四人小1.ppt展示内容

组讨论并分享:

讨论,了解现实人小组讨论并分享。

•Some unknown gases pollutedthe air

and harmfulto us.生活我们对待空T: What should/must/can

•Air pollutionaffects our healthand prevents the normal growth of plants.气污染的重视和we do to keep the air

身体力行的重要clean ?

We should___________ 性。

We shouldn’t

______________

We must

What should/must/can we do to keep the

________________ air clean ?

We should___________

We mustn’t

We shouldn’t __________________

________________ We must ________________

We mustn’t ____________________

We can ______________________We can’t _________________________.

We can

______________________

We can’t

____________________ 2.加深学生对空2.教师写了一封给孩子们2.学生完成

Think and write

气和空气污染的的信,让学生讨论完成。

的练习,将口头2. ppt展示内容

理解和掌握。

能够表达的内

1.指导学生通过

容落入笔头。

3学生完成后在小组内交流。

Dear childrenAir is important. It keeps _________,________and ___________ alive.The air in our city was clean, but now it is dirty.Smoke from __________,____________ and ___________ makes it dirty.We should _____________________________________.We should _____________________________________.Let’s keep the air clean !Laura

1.引导学生回顾、1.教师根据板书小结空气总结本课时教学对人类的重要。

重难点。

2.教师引导学生总结空气污染的危害。

3.教师引导学生总结在阅

读时运用核心句型对观点进行归纳总结。

1. 1. 学生根据板书提示总结空气对人类的重要。

2.学生根据板书提示进行总结。

1.ppt展示内容

3.

学生发言

3.学生根据老师3.学生发言

提问总结出:从

我做起,减少空气污染。

延伸课堂,并复Is the air near your home 学生认真听,准投影展示作业PPT

习课堂重难点词or school polluted ? If so, 备作业。

how can we reduce air Homework汇及句型。学生pollution ?

Is the air near your home or 学以致用,让英

school polluted? If so, how can we reduce air pollution?语成为日常交际的工具。

板书设计:

教学后记:

本课课型定位为阅读课,以谜语吸引学生兴趣,引出对空气的表达和理解,进一步吸引学生对空气污染危害性的理解和治理污染的措施。最后回到学生实际生活中,讨论学生面对我们所处的环境,不明气体的出现等的危害和处理方式。本课在教学设计及实施过程中非常强调学生思维的训练,包括信息,解释、举例等方式理解关键词句,并综合运用语言知识来分析事物、表达自己的观点。教师给予学生充分的时间进行思考和小组合作,学生能够调动背景知识,发散思维,有条理地进行分析,课堂效率较高。

可改进的部分是:对PM2.5的认识,教师的示范和引导还可多点强调。

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