小学英语沪教牛津版(六三制三起)六年级上册Unit 10 Air教案

Unit 10 Air

【第三课时】

【教学目标】

1．通过Ask and answer的问答练习帮助学生运用核心句型，联系实际，围绕空气污染展开讨论。

2．通过Think and write的写作练习，帮助学生综合运用本单元所学的句型描述空气的重要性和空气污染的原因，并对如何保持空气洁净给出建议。

3．帮助学生学习字母g, j, s和字母组合ch, sh在单词中的发音。

4．通过学习任务，帮助学生巩固和运用本单元所学的知识和技能。

【教学重难点】

1．语音：ch, g, j, sh, s

2．句型：What makes the air dirty?

【教学准备】

课件、音频

【教学过程】

I. Pre-task preparations

1．学生表演Say and act的对话，引入本课时的学习内容。

T: From the dialogue we know that smoke makes the air dirty. Today we are going talk about it more.

2．教师设问，让学生根据自己的认知说说空气污染的情况

II. While-task procedures

1．借助多媒体或挂图出示空气污染的图片，让学生说说空气污染的原因。

T: Look at these photos. Can you tell me what makes the air dirty?

S1: The smoke from factories makes the air dirty.

S2: The smoke from cars makes the air dirty.

S3: The smoke from buses makes the air dirty.

S4: The smoke from burning wood makes the air dirty.

S5: The smoke from firecrackers makes the air dirty.

2．根据学生的回答引出下一个问题，并出示Ask and answer栏目中第二排的图片，激发学生思考保护环境的对策。

T: There's so much air pollution nowadays. What should we do to keep the air clean?

S1: We should drive our cars less often.

S2: We shouldn't play with firecrackers a lot.

S3: We should ride a bicycle or take buses to work or school more often.

S4: We should use both sides of the paper.

S5: We should tell factories not to pollute the air.

（学生可以先在小组内讨论，然后在班级内进行交流。）

3．教师总结本单元的内容，用问题帮助学生梳理学习内容。

T: In this unit, what did we talk about?

Ss: Air.

T: What is air like?

S1: Air has no color, shape, smell or taste.

S2: Air is important to us.

S3: Air keeps people, animals and plants alive.

T: What makes the air dirty?

S1: Smoke from factories, cars and buses makes the air dirty.

T: What should we do to keep the air clean?

S1: We should drive our cars less.

S2: We should plant more trees.

4．将以上三个引导性问题的核心内容板书在黑板上，帮助学生总结本单元的学习内容。

T: In this unit, we learnt about air. Please tell us something about air.

S2: Air has no color or shape. We can't see it, but we can feel it. Air is important to us. Air keeps us alive. Air keeps things high in the sky. Now the air is getting dirty. The smoke from factories makes the air dirty. The smoke from cars and buses makes the air dirty too. It's not good for us. We should keep the air clean. We should drive our cars less often. We should plant more trees. We hope we can have fresh air all the time.

5．最后，让学生通过小组和集体交流，谈一谈个人对空气的认识。

6．学生朗读Learn the sounds的单词，感受红色字母的发音。教师可以先作示范，引导学生自己找出发音规律。

T: ch /tʃ/, chair, China.

Ss: ch /tʃ/, chair, China.

T: Please read the other words with the sound /tʃ/ in them.

S1: Each, rich.

T: Can you find any other words with this sound?

S2: Teacher, children, watch, catch.

7．运用这种方法教学其他语音。然后让学生完成Listen and circle的练习。

III. Post-task activities

1．学生完成Think and write的练习，将口头能够表达的内容落实到笔头。在写小短文之前，先口头说一遍，然后再落笔。学生写完后可以在小组内进行交流。

2．请学生看《练习册》Task的第一部分，找一找有关空气污染的图片并贴在方框里。接着，学生分成若干小组，根据第二部分的提示在小组内问答，讨论保持空气洁净的方法。

S1: What should we do to keep the air clean?

S2: We should plant more trees in the street.

S3: ...

3．最后，学生在海报上写下讨论的结果，画出相应的标识。

【板书设计】

Unit10 Air

ch, g, j, sh, s

What makes the air dirty?