小学英语Unit 12 The Earth教学设计

Unit 12 The Earth

【第二课时】

【教学目标】

1．通过Look and read的短文阅读，帮助学生拓展语言知识。

2．通过对地球环保主题文章的反馈，引导学生对地球污染问题和解决方案展开深入讨论。

3．帮助学生复习本学期所学的语音。

【教学重难点】

词汇：sick, pick up

【教学准备】

课件、音频

【教学过程】

I. Pre-task preparations

1．出示课题The Earth，并将图片贴在黑板上，用设问的方式复习上一课时的核心内容。

T: Look, what is this?

Ss: It is the Earth.

T: What are the different parts on the Earth?

Ss: They are forests, oceans and land.

根据问题引出核心词，可以让学生将单词拼写在图片旁边，并作介绍。

T：Here is the Earth. Who can introduce it to us?

2．让学生进一步复习上一课时关于保护地球的内容。

T: Yesterday, we talked about some problems on the Earth. What should we do to protect the Earth?

学生两人一组交流各自对地球、地球上的污染的认识，以及人类应采取什么行动来保护地球。

II. While-task procedures

1．Review the sounds是语音的总复习，可以让学生朗读单词，感受这些语音的区别，也可以播放录音，让学生进行语音辨别练习。可以设计一些语音练习帮助学生巩固发音。

2．教师总结学生上一个练习中对地球的介绍，引入新课。

T: As you mentioned just now, the Earth was clean but now some parts are dirty. What makes the Earth dirty? Why does the Earth get sick? In today's class, we are going to find out more. Before reading the passage, do you know why the Earth is getting sick?

在阅读课文之前，先让学生根据个人对本话题的认知谈一谈。

3．引入Look and read的内容，将班级分成两大组，第一组看课文第一段，第二组看课文第二段，快速阅读后，交流阅读感受。

T：Now Group 1, can you tell us what the first paragraph is about?

S1: It is about what's on the Earth.

T: (write down the key question on the blackboard) what's on the Earth?

S2: There are oceans, forests, rivers and land on the Earth. There are people, animals and plants on it too.

T: Now Group 2, can you tell us what the second paragraph is about?

S3: It's about why the Earth gets sick.

T: (write down the key question on the blackboard.) Why does the Earth get sick?

S4: People throw rubbish into rivers and oceans.

S5: People cut down too many trees.

S6: Smoke from cars and factories makes the air dirty.

教师可以根据学生的回答板书核心词，作为学生概括课文大意的提示。

THE EARTH

oceans  rivers  forests  land

people  animals  plants

throw rubbish  cut down trees

smoke from cars and factories

pick up rubbish  plant trees

recycle glass and paper

stop using plastic bags

4．播放课文第一、二段的多媒体动画，让学生模仿录音朗读。然后学生按照板书尝试对文章的前两段进行归纳。

T: From these two paragraphs we know something about the Earth. Look at the blackboard. What's the main idea of the first two paragraphs?

指导学生独立阅读第三段和第四段，并模仿板书自己设计核心问题和记录核心词。阅读结束后，两人一组相互问答，完成第三、四段的学习。

S1: What are the third and fourth paragraphs about?

S2: They're about what people do to keep the Earth clean and healthy.

S1: What do people do?

S2: People pick up rubbish, plant trees every year, recycle glass and paper, bring their own shopping bags and stop using plastic bags.

讨论结束后，让学生模仿第三、四段的录音朗读课文，并根据板书概述第三、四段的内容。

III. Post-task activities

1．学生通读课文，根据板书概括课文大意，作为本节课的总结。

2．引导学生关注地球污染和人们的行为之间的因果联系，可以通过练习来完成。

学生可以根据个人学力，补充地球污染的问题和解决方案。

S1: Smoke from cars makes the air dirty. So now people drive cars less often and go to work by bike or on foot.

【板书设计】

Unit 12 The Earth

sick, pick up