八上仁爱版英Unit 4 Topic 1 Plants and animals are important to us Section C教学案例.doc

八上仁爱版英Unit 4 Topic 1 Plants and animals are important to us Section C教学案例
The main activities are 1a and 2a. 本课重点活动是1a和2a。
Ⅰ. Teaching aims and demands 教学目标
1.(1) Learn some words about rainforests:
cover, earth, surface, dark, forest, control, wood, rubber, protect
(2) Learn some other words and expressions:
everything, fact, in fact, make up, lake, sea, ocean, drop, fill, fill … with …
(3) Learn some useful expressions:
thousands and thousands of be very important to
be necessary for… can’t live without…
save every drop of water
2.Go on learning comparative and superlative degrees of adjectives:
(1)The plants in the forests help to make the air fresher.
(2)But now rainforests are becoming smaller and smaller.
(3)Water makes up the largest part of the human body.
3.Describe nature resources and realize the importance of environment protection:
(1)They also help to control the climate.
(2)The rainforests give us wood, rubber, fruit, medicine and so on.
(3)It is important to all living things. We must save every drop of water.
Ⅱ. Teaching aids 教具
录音机/多媒体/小黑板
Ⅲ. Five-finger Teaching Plan 五指教学方案
Step 1 Review 第一步 复习(时间:8分钟)
1. (师生互动示范，然后让学生表演对话，复习描述动物和植物。)
T: Hello, S1! Do you like plants or animals?
S1: I like animals better.
T: Why do you think so?
S1: Because animals are our friends. They give us joy. They are very friendly to us.
T: Well done! S2! Do you like plants or animals?
S2: I like plants better.
T: Why do you think so?
S2: Because plants are very important to us. They are useful.
T: Now, class, please practice the dialog like this, OK?
(学生两人一组练习对话。然后找几组学生表演。）
2. (头脑风暴，引出新知识。)
T: Now, please say some animals and plants as many as you can.
Ss: …
T: Where can you see animals and plants?
S1: At home.
S2: In the zoo.
S3: In the forest.
T: Very good. In a forest, there are many animals and plants. Today we’re going to learn a special forest. It often rains and it is very wet. It is in the tropical area. Can ou say what’s it?
(引出rainforest 并板书。)
rainforest
Step 2 Presentation 第二步 呈现(时间:12分钟)
1. (看热带雨林的图片，学习生词。引出比较级+and+比较级的用法。画线的单词为生词。)
(教师通过多媒体出示热带雨林的图片，教师和学生一起观看图片，同时教师讲解图片上的信息。)
T: It’s a picture of forests, rainforests. They cover 6% of the earth’s surface. Thousands and thousands of animals live in it. It’s always dark, hot and wet in the rainforests. They can help to control the climate. They give us wood, rubber, fruit, medicine and so on. They are very important to us, but they are becoming smaller and smaller, so we must protect them well.
(第二遍教师边说边板书。学习生词，帮助学生理解掌握smaller and smaller的用法。)
forest, rainforest, cover, surface, thousands and thousands of,
dark, control, wood, rubber, protect
(学生熟读单词后，再看图片并回答教师提出的问题。)
T: What are they?
Ss: They are rainforests.
T: How large are the rainforests?
Ss: They cover 6% of the earth’s surface.
T: What’s in the rainforests?
Ss: Thousands and thousands of animals live there.
T: What can we get from the rainforests?
S: We can get wood, fruit, medicine and rubber.
T: Are they important to us?
S: Yes, they are.
T: What should we do with them?
S: We should protect them well.
T: Do you want to know more about rainforests?
Ss:Yes.
T: Let’s learn Section C together.
2. (听课文1a，了解课文内容并回答问题。)
T: Most students want to know more about the rainforests. Please listen to the tape and answer the following questions.
(出示小黑板。)
(1)What covers 6% of the earth’s surface?
(2)Are there a lot of animals in rainforests?
(3)Are there also thousands of different plants and lots of trees in rainforests?
(4)Are the rainforests very important to us?
(5)Can rainforests help to control the climate?
(核对答案。)
Step 3 Consolidation 第三步 巩固(时间:10分钟)
1. (阅读1a，完成1b。)
T: Now please read 1a and finish 1b.
(核对答案。)
2. (再读1a，完成1c。)
T: Read 1a again and write down the importance of rainforests.
(核对答案。)
T: Ss, can you give us your answer?
S1: Make the air fresher.
S2: Control the weather.
S3: Give us wood, rubber, fruit, medicine and so on.
3. (教师播放1a录音，学生跟读两遍，核对语音语调，并画出关键词句。)
(板书)
Paragraph 1: cover 6%—animals—live in—thousands of—dark—wet
Paragraph 2: important—lungs—help to make—control—wood, rubber …—smaller—protect
(根据黑板上的关键词，用接龙的形式复述短文。)
Example:
T: Now please retell the passage one by one according to the key words.
S1: Rainforests cover 6% of the earth’s surface.
S2: Thousands and thousands of animals live in rainforests.
S3: …
4. (将短文内容编成对话来巩固。)
T: OK. Now please make up a dialog according to the passage. Then I will ask some groups to act it out.
Example:
S1: Hi! S2. Do you know the rainforest well?
S2: Yes, what’s the matter?
S1: I want to know about it. Could you help me?
S2: No problem. I know rainforests cover 6% of the earth’s surface.
S1: Really? Do thousands and thousands of animals live in them?
S2: Yes, many of them live in the trees over 30 meters from the ground.
S1: Could you tell me the importance of the rainforests?
S2: Yes, they are the lungs of the earth. The plants in the forests help to make the air fresher. They also help to control the climate.
S1: What can they give us?
S2: They can give us wood, rubber, fruit, medicine and so on.
S1: Are the rainforests becoming bigger and bigger?
S2: No, they are becoming much smaller than before.
S1: What should we do now?
S2: I think we should protect them well.
S1: I agree.
Step 4 Practice 第四步 练习(时间:10分钟)
1. (师生对话，引出生词。引入2a。)
T: Rainforests are very important to us. What do you think of water?
Ss: It’s very important to us, too.
T: What do humans need water to do?
Ss: We need water to drink, to cook and to clean.
T: Yes. In fact, water makes up the largest part of the human body.
(板书)
in fact, make up
T: Water covers most parts of the earth. It’s in rivers, seas, lakes and oceans.
(板书)
sea, lake, ocean
T: All plants and animals need water, that is to say, water is important to all living things, so we must save every drop of water.
(板书)
living things, drop
2. (学生读2a，独立完成2b。)
T: There is more information in 2a. Read it and finish 2b.
(核对答案。)
3. (学生听读2a短文，核对语音和语调并画出关键词。)
T: Listen to 2a and follow. Pay attention to the pronunciation and intonation. Write down the key words.
(板书)
plants (need, be necessary for)
animals (plenty of, live, without)
humans (drink, cook, clean, make up)
water (cover, lakes, rivers, seas, oceans, living things, save, drop)
4. (让学生根据关键词复述短文。)
T: Retell the text using the key words on the blackboard.
(2分钟后挑几名学生到前边复述。)
5. (听3录音，独立完成3。第一遍只听不写，从整体上了解短文内容。第二遍边听边写出空缺处的内容。第三遍听录音核对答案。)
T: Listen to the tape and finish 3. For the first time, you just need to know about the passage. You need to write down the answers for the second time. For the third time you need to check the answers.
(核对答案。)
Step 5 Project 第五步 综合探究活动(时间:5分钟)
1. (讨论有关水的问题。)
T: Just now, we talked about the importance of water. Next, please discuss the following questions about water in groups. Then each group gives your opinions in the front of the classroom.
(出示小黑板。)
(1)Are there rivers and lakes in your hometown?
(2)Is the water there dirty or clean? Why?
(3)What should we do to keep the water clean?
(4)What should we do to save every drop of water?
(把学生分成四人一组，讨论这些问题，然后每组派一人汇报讨论结果。)
2. Homework:
根据讨论结果，以Water is Our Life为题写一篇短文。
板书设计:
Plants and animals are important to us.
Section C
thousands of The plants in the forests help to make the air fresher.
smaller and smaller Water makes up the largest part of the human body.
in fact Water is important to all living things. We must save every drop of water.
make up
be necessary for
be very important to
can’t live without…