Using LanguageⅠ优秀教案内容

The Fifth Period Listening and Speaking Teaching goals 教学目标

1. Target language 目标语言

a. 重点词汇和短语

tropical rainforest, cut down, destruction, slow down 2. Ability goals 能力目标

Learn the present situation of tropical rainforests in the world.

Talk about what they can do to help slow down the destruction of rainforests in China. 3. Learning ability goals 学能目标

By listening to the interview, learn and talk about the present situation of tropical rainforests and find ways to help slow down the destruction of them. Teaching important and difficult points 教学重难点

Learn reasons why rainforests are being destroyed and consequences of rainforests being destroyed.

Teaching methods 教学方法

Listening, brainstorming and speaking. Teaching aids 教具准备

Projector, slide and some pictures of tropical rainforest. Teaching procedures && ways 教学过程与方式

Step Ⅰ

Revision and lead-in Check the homework. Ask several groups to report the result of their discussions. T: In the last period, we learned co-evolution and the relationship between several plants and their pollinators. What do you think would happen to the animal pollinators of each plants described if these plants dies out? Now I’d like some groups to report your ideas.

Group 1: We think that if these plants died out, their pollinators would die out too, because they have become totally dependent on each other. It would be hard for the pollinators to adapt to other plants and get their food. Since they had no food sources, they would probably die out.

Group 2: We have quite different opinion. We think the animal pollinators would try

to find other plants that they could get food from. Maybe at first, they couldn’t get used to the taste of the new food, but gradually, they would. Just like us humans, when you travel or live in another country, you may find it hard to get interested in the local food, but in order to survive, you have to. Maybe when you leave that country, you find yourself quite attracted by the food.

T: Good points. I think both your opinions are reasonable. I suggest you do some research on this topic after class if you are interested in it. Today, we will talk about tropical rainforest. (write “Tropical rainforest” on the Bb) What comes into your mind when you hear the words? Can anyone describe it? S: I think tropical rainforest is the forest that locates in the tropical areas where it rains a lot.

S: I think in the tropical rainforest, there should be many big and tall trees, thick bushes, various kinds of wild animals and so on.

T: Good descriptions! Rainforests cover less than two percent of the Earth’s surface, yet they are home to some 50 to 70 percent of all life forms on our planet. The rain forests are quite simply, the richest, oldest, most productive and most complex ecosystems on Earth. Tropical rainforests are called “jewel of the Earth” or “the Earth’s lungs”. Now I will show you some pictures of tropical rainforests. Look at the screen.

Show some pictures of tropical rainforest.

Step Ⅱ

Pre-listening Show some pictures to the students.

T: What do you think of them? Aren’t they beautiful? But nowadays, the world’s rain forests are being destroyed at an alarming rate. Look at some statistics:

Show the following to students.

Global Rates of Destruction ☆

2.47 acres (1 hectare) per second: equivalent to two U.S. football fields. ☆

150 acres (60 hectares) per minute

☆

214,000 acres (86,000 hectares) per day: an area larger than New York City. ☆

78 million acres (31 million hectares) per year: an area larger than the country of Poland.

In Brazil

☆

5.4 million acres per year (estimate averaged for period 1979-1990)

☆

6-9 million indigenous people inhabited the Brazilian rain forest in 1500. In 1992, less than 200,000 remain.

Species Extinction ☆

Distinguished scientists estimate an average of 137 species of life forms are driven into. ☆

extinction every day, or 50,000 each year.

T: Turn to Page 75. Look at the two pictures. The one on the left is a tropical rainforest that is well protected and the one on the right is a tropical rainforest that has been cut down. How would you describe the picture on the right? S: We can’t see any trees in the picture. They have been cut down. Some wild animals are searching for food everywhere. They are so poor because they have lost their home.

T: Now work in groups and answer the three questions above the pictures. Suggested answers to the questions: 1. We would find tropical rainforests in the countries or areas near the equator, where it is very hot and wet.

2. People cut down the rainforests for lumber, farm animals and agriculture.

3. They are important because they provide food and habitat for wild animals and they protect the environment for us humans.

T: The destruction of tropical rainforests is a very serious problem in some countries and areas. What should we do to protect “lungs of the Earth”? Now we will listen to

Ed Walker interviewing Dr Anne Butler about it.

Step Ⅲ

Listening

Play the tape, let the students number the topics in Activity 2 in the order they hear them.

T: OK, now read the topics in Activity 2 before you listen to the tape. Then listen and number them in the order you hear them. Check the answers. Then play it again, and let the students finish Activity 3.

T: Now read the statements in Activity 3 before I play the tape again. Then decide whether they are true or false. Correct the false ones.

If necessary, play the tape several times to help them correct the false ones.

Finally, deal with Activity 4. Let the students complete the notes under the two headings. After they have finished, check the answers.

Step Ⅳ

Speaking

Deal with TALKING on Page 76. T: In the interview, Ed Walker’s last question was: What can individuals do to help slow down the destruction of rainforests? Now I’d like you to discuss this question in groups and write a list of your ideas.

After the students have finished discussion, ask the group representatives to report their groups’ ideas before the class.

A sample list of ideas: 1. Don’t cut trees that are not allowed to be cut.

2. Call the police or the authority if you find someone cutting the trees illegally.

3. Plant more trees in the rainforests.

4. Reduce the use of wood or wood products. Don’t drop litter there.

5. ... T: As a matter of fact, China’s tropical rainforests are also rapidly disappearing. Now look at the questions in Activity 2. In groups, answer the questions.

After a while, ask each group to choose a spokesperson to present their group’s ideas.

Suggested answers: 1. There are tropical rainforests in Hainan and Yunnan province. Hainan has the most

beautiful and rich tropical rainforests in China.

2. They are disappearing because many trees are being cut down everyday.

3. Sure they need to be protected. Firstly, there are many rare species in the forests. They will disappear if the rainforests disappear. Secondly, they protect the environment that we humans live in. They produce oxygen than we need.

4. We could tell people around us the importance of protecting the tropical rainforests. We could reduce the use of wood in our daily life such as disposable chopsticks, pencils and so on. Step Ⅴ

Summary and Homework T: Just now, we discussed about what individuals can do to help slow down the destruction of rainforests. Here I will tell you a story. (The Chinese version is included in the appendix.)

The story goes like this: In 1913, a young man traveled across a province in south France. What he saw was a desolate area with few trees and people. The soil was destroyed because the forests had been cut down for lumber and agriculture. So most of the villagers had left there for a better living. Without protection of trees and forests, the wild animals also left this area.

The young man met an old shepherd who still lived in the village. He was near his fifty but he looked strong and healthy. What surprised the young man was that every evening, the old shepherd would spend hours classifying some seeds of trees. He picked out the bad seeds and put the good ones in a bag. The next morning, while he was taking care of the sheep on the grassland, he sowed the seeds everywhere he went. Often he had to travel several kilometers a day. The young man was surprised by what the old man did and asked, “Why do you do this? It will take years for the trees to grow up. You probably won’t be able to see them with your own eyes before you die.”“You are right. But I think they will benefit some people one day and they will bring the land to life. Maybe I won’t see the dream come true myself, but my descendants will.”

20 years later, the traveler who was in his 40s went back to the area. He was

amazed by what he saw. In the big valley, various trees had grown up and formed into a fresh and green forest! The valley was full of vitality. The wild animals came back and the soil became wet and suitable for crops. The old shepherd was still alive, healthy and strong. As usual, he classified seeds every evening. Because of his effort and his foresight, this area had taken on a new look.

So when you feel disappointed by what our world looks like, don’t give up. Sometimes you may think hopelessly, “Who am I? What can I do to help? Nothing can be changed and there is no hope. How can an individual change the world! Will it make sense if I try to change it?”

However, the old shepherd has proved us with his years of efforts that: One can change the world. Maybe you can’t change the whole world, but you can change part of the world where you live.

Step Ⅵ

Homework: Finish the two exercises in USING WORDS AND EXPRESSIONS.