Открытый урок по английскому языку: "Человек и проблемы окружающей среды"

Задачи урока:

• активизировать лексику по теме в разных видах деятельности: чтение, аудирование, говорение.
• ознакомить учащихся с проблемами экологии.
• подготовить учащихся к устному монологическому высказыванию по теме "Проблемы окружающей среды".
• воспитывать чувство ответственности за чистоту окружающей среды, любовь к природе.

ТСО: магнитофон, интерактивная доска.

The topic of our today's lesson is Man and environmental problems (слайд №1).

The motto of the lesson is "We do not own the Earth, we have borrowed it from the future generation" (слайд №2)

About two hundred years ago people lived in harmony with nature, because industry was not much developed. But progress does not come to a standstill. Considerable advances were made by people in different areas of science. However, there exists the dark side of the picture. Now industrially developed states can not ignore the problem of environmental protection. The ecocide is increasing constantly. The contradictions between man and nature are dramatic. The main aim in the policy of environmental protection is development of technology to control atmospheric and water pollution, the study of man's influence on climate, biological and genetic consequences of pollution, protection of rare and vanishing plants and animals and protection of nature as a whole (слайд №3).

Let's begin with the snowball to revise the words you know. Today you'll work in groups. One person from the group names the word, the other repeats his word and adds his own. e. g. environment; environment, dump; environment, dump, pollution and so on.

Take card №1. Read the text and try to understand it. Be ready to answer my questions and do some tasks. (слайд №4) You have 6-7 minutes.

We need our planet cleaner and healthier

The Earth is our home, but much of it is dirty and dying.

By the year 2030, scientists report that 25% of all animals, birds, fish and insects may be extinct.

Every year man cuts down more trees to provide paper, wood, medicines, mineral fuel. But it's not only trees and forests which are disappearing. Animals, insects and flowers are destroyed, too. Is there any solution? People should protect certain areas and plant new forests.

Cars and factories are very dirty. They can also be dangerous for people, wildlife and environment.

One of Europe's and North America's most serious pollution problems is "acid rain". This happens when factories send gases and chemicals into the air. There they mix, and the mixture is carried for hundreds of miles by the wind and finally falls back to earth. This "acid rain" kills fish and trees. It slowly destroys everything. Industrial countries should control their level of pollution and try to reduce the acid rain effect.

At the moment, 94% of the world's energy comes from oil, gas and coal. But these "fossil fuels" won't last forever. There's only enough oil and gas for the next 50 years. Coal will last longer - perhaps about 300 years. And then? Well, one answer is nuclear energy. But today, after Chernobyl, many people think it's too dangerous. There are four solutions.

They all use natural energy in the environment: wind energy, wave energy (from the sea), and geothermal energy (from "hot" rocks under the ground). It's clean and natural, but there is another problem: they all rather expensive.

Today, many scientists and world leaders realize that the Earth is in danger. Either we stop killing the Earth or we kill ourselves. We need a cleaner, healthier planet.

Vocabulary

Become extinct - вымирать

Wildlife - живая природа

Chemicals - химикаты

Mixture - смесь

Reduce - уменьшать

Fossil fuel - ископаемое топливо

Solar energy - солнечная энергия

Geothermal energy - геотермальная энергия

Answer my questions:

When may all animals, birds, fish and insects be extinct by scientific reports?

Why does man cut trees every year?

What is one of the most serious pollution problems?

What is "acid rain"?

Why are acid rains dangerous?

How much is there oil and gas on the Earth?

What is natural energy?

What do all people need?

Now let's check up your equivalents.

Find English equivalents:

Let's watch and listen to your presentations.

Air pollution.

Water pollution.

4. If we don't think of and protect our nature we won't see the beauty of the Earth. (слайд №5)

Let's have a rest and sing a song "The beauty of the Earth".

Now take card № 2 and do a lexical quiz, you should discuss it in your group and then we'll check it up. Write only the letters. Look at the screen.

(Слайд №6)

Fill in the missing words:

Air pollution

We need certain things to stay alive and (1):. We need clean air to (2): and pure water to drink. But we can't get all these things by (3):. We live in large communities so we can (4) : our health problems only working together.

(5) : air is a community problem. Air becomes polluted in many ways. Cars, trucks, (6): are among the worst polluters. Air can also be polluted by smoke and gases from factories.

Air pollution can (7):, or make worse diseases. They usually affect older people. But everyone may feel uncomfortable and (8): from lack of energy when air isn't clean.

What (9): people do to cut down on air pollution?

Today, many factories use devices to (10): the smoke, dust, or harmful (11):. Special kinds of gasoline for cars can help reduce air pollution. More efficient engines (12): help too.

a) can b) breathe c) cause d) polluted e) gases f)healthy

g) do h) buses i)ourselves j) reduce k) solve l)suffer

Look at the key and check it up. Слайд №7.

Key:

1 - f

2 - b

3 - i

4 - k

5 - d

6 - h

7 - c

8 - l

9 - g

10 - j

11 - e

12 - a

Complete these word-building tables. Слайд №8. You have 2 minutes.

Listening-comprehension. Take card №3. There are 7 statements on the paper. Your task is to choose the right variant. The text will be read twice.

(Слайд №9.)

One way to protect plants and animals is to protect their natural habitats by setting aside land for parks. For example, by conserving wetlands, people help to protect geese, swans and other wetland animals.

Sensible hunting and fishing programs can help to maintain the natural balance of animal populations. Managing the cutting of trees helps save the trees as well as the animals that live in the trees.

It is also important to stop pollution - the dumping into the environment of any material that can harm or destroy natural habitats and the life in them. When chemicals are used to kill insects, they can also kill birds that feed on them. When chemicals are used on crops to control insect pests, some will be washed into rivers and lakes, poisoning fish. When oil is spilled into ocean, it kills birds, fish and many other organisms. When the gases produced by cars and factories return to earth in rainwater, they form acids that kill forests and lakes.

Choose the right variant.

One way to protect plants and animals is to protect their natural habitats.

1) True 2) False 3) Not stated

2. By conserving wetlands, people help to protect farm animals.

1) True 2) False 3) Not stated

3. Sensible hunting can help to maintain the natural balance of animal population.

1) True 2) False 3) Not stated

4. It's important to stop nuclear waste.

1) True 2) False 3) Not stated

5. When chemicals are used to kill insects, they can't kill birds that feed on them.

1) True 2) False 3) Not stated

6. Chemicals used on crops can poison fish.

1) True 2) False 3) Not stated

7. The gases produced by cars and factories never return to earth in rainwater.

1) True 2) False 3) Not stated

And now let's discuss the main topic of our lesson. What should and shouldn't we do to protect our environment? (Слайд №10)

We should

• attract more public attention to environmental problems.
• take part in the environmental actions.
• clean streets and yards regularly, use less packaging, build.
• recycling factories and recycle waste.
• pick up litter.
• keep the land, air and water clean!
• protect the environment from industrial pollution!
• save water, gas, energy and other natural resources.
• develop international cooperation to solve ecological problems together.

We shouldn't

• waste water, gas, energy, natural resources.
• put poisons into the water, air and soil.
• dump industrial waste into rivers, lakes, seas and oceans.
• turn our planet into a pile of rubbish.

Our lesson is over. Thank you very much for your work. I hope everybody liked it and made a decision to become a fighter for clean ecology in our town and help the planet to survive. Your home task is the topic "Environmental problems".

Приложение.