沪教牛津版(六三制三起)六年级上册Unit 12 The Earth教案

Unit 12 The Earth

【第三课时】

【教学目标】

1．通过Ask and answer的问答活动，学生运用核心句型交流看法。

2．通过Think and write的写作练习，学生综合本单元所学知识，运用核心句型提出环保行动建议。

3．通过学习任务(Task),帮助学生巩固和综合运用本单元所学的知识和技能。

【教学重难点】

句型：We should ... (do)

We should stop ... (doing)

【教学准备】

课件、音频

【教学过程】

I. Pre-task preparations

1．学生朗读Look and read的课文，引入本课时内容。学生用自己的话表述文章的核心内容，作为上一节课的复习。朗读可以采取集体形式，而复述课文则可以采取个人或小组交流的方式。

2．教师设问，引入本节课的主题。

T: From the passage, we know that our Earth is getting sick. There are different kinds of pollution on the Earth. What are they?

S1: They are air pollution and water pollution.

T: Yes, pollution makes the Earth dirty and sick. Let's find more solutions to these environmental problems.

II. While-task procedures

1．出示人们破坏自然资源的图片，并让学生列举生活中的类似现象，如白色污染（white pollution)、砍伐树木等，让学生根据地球污染的原因深入讨论，找出解决方案。

T: What causes air pollution?

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

S2: Trees can keep the air clean and cool the air. However, people cut down too many trees.

T: So what should we do to keep the air clean?

S1: We should stop polluting the air.

S2: We should drive our cars less often. We should ride a bike or walk more often.

S3: We should plant more trees.

S4: We should use both sides of paper.

T: What causes water pollution?

S1: People throw rubbish into rivers and oceans.

T: What should we do?

S3: We should put rubbish in a bin.

S4: We should not litter.

此练习可以根据学生的学力，如果学生有能力用英语表述，可以由教师设问学生回答。否则，教师可以提供语言信息，让学生连线，再说一说。

2．学生独立完成Ask and answer的练习，然后模仿课本上的形式，在小组内讨论交流。

S1: What should we do to save the Earth?

S2: We should plant more trees.

S3: We should drive our cars less often.

S4: We should stop cutting down trees.

3．学生以小组的形式，围绕地球、环境污染以及环境保护自编并表演对话，教师给出对话所需涉及的内容，学生在组内自行组织对话。

T: Now you are going to make a dialogue about the Earth. In the dialogue, you need to talk about the Earth, pollution and the solutions to pollution.

然后，请各组学生表演对话，通过不同的对话表演来进行信息互补和评价。

学生完成Think and write的短文，写完以后可以在小组内交流，教师可以将学生写的小短文装订在一起，做成一本班级环保小册子。

III. Post-task activities

1．学生四人一组制作海报。分发给每组学生一张海报纸，围绕主题Save the Earth或者半开放主题 “Save …” 制作海报。邀请部分学生在全班进行汇报交流，最后把学生制作的海报贴在教室墙上。

2．请学生看《练习册》Task的第一部分，在方框内画一画地球或者贴一张地球的图片，并标注地球表面各部分的名称。然后学生分成若干小组，在小组内问答交流，看看各自画的地球上有什么，讨论该如何保护环境。

S1: (show his/her picture of the Earth) What can you see on the Earth?

S2: I can see some land.

S3: I can see the oceans.

S4: What is the white part?

S1: It is...

3．最后，让学生根据小组交流的信息完成第三部分的短文，以保护地球为主题写一写地球的现状，并给出保护环境的建议。

【板书设计】

Unit 12 The Earth

We should ... (do)

We should stop ... (doing)