Using LanguageⅡ优质课教案内容

Book 8

Unit 2

Cloning-reading 教案

Teaching aim：

1. Students are able to figure out the definition of Cloning

2. Students are able to understand the process of animal cloning

3. Students are able to decide the good effects and bad impacts of cloning

4. Students are able to show their opinion on the topic of cloning

Learn difficulties:

1.

the classification of natural and man-made cloning

2.

the procedure of animal cloning 3.

the problem of cloning

4.

the usage of cloning

Teaching procedure:

Step one: pre-reading Q: Where do you come from?

T: describe the situation of a woman in her pregnancy experiences during pregnancy

(try to replace the underlined words with some new words in this unit) •

1. Fat continues to

increase

and the will-be-mother becomes ugly, which will made most women upset.

•

2. The woman will be

banned

to eat some delicious but unhealthy food, such as KFC, especially when the baby is just an embryo.

•

3. Some strenuous work, such as carrying a burden, is entirely forbidden, for it will have serious effect on the mother and baby.

•

4. In all,

the mother will suffer about 10 months to give birth to her baby.

•

5. The mother will get returns after all the efforts.

•

6. The whole family

is sure

to

be happy with a new baby.

(accumulate

cast down

forbidden

impact

Altogether

All the efforts will pay off is bound to) •

•

•

•

•

7. If you are lucky enough, you may have a brother or sister at the same time.

twins

You are

the same

in sex and appearance!

(identical)

Clone!!! Natural cloning

man-made cloning

Step two: fast-reading Reading for main idea:

The passage tells us that animal cloning raised

and scientists are not sure about its

. What’s the writing style? A.

Expositive(说明性的) B.

Argumentative（议论性的）

C.

Narrative（叙事性的）

D.

Descriptive（描写性的）

Para 1

The definition（定义）

of cloning Para 2The two major uses of cloning and the procedure Para 3The problems of Dolly and scientists’

concern Para 4The impact of cloning in society (attitude) Para 5

Different reactions to cloning

Detailed-reading Para 1

The definition of cloning

Q:What is cloning ? Cloning is a way of making an exact copy of another animal and plant. It happens both in ______ and in_______. They can be cloned by ________ and _______. Clone: Natural clone is one that occurs in nature without human help.

Man-made clone is one that is produced through human intervention (介入). Quiz: judge whether the following picture is natural clone or man-made clone A strawberry plant

cutting

A cloned dog

Twins

Dolly

Q: is cloning Straightforward or Complicated?

For plant: straightforward

for animal: complicated

Para 2: The major uses and procedures of cloning •

plants: straightforward

•

Q: use:

•

Q：what’s the meaning of “commercial”? •

A. make it beautiful •

B. produce more •

C. make profits •

D. be economical •

animals: complicated

•

Q: use:

Task: explain the procedure of animal cloning

Q: The cloning of Dolly the sheep succeeded because____.

A. its easier to clone a sheep than other animals

B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed Enjoy some pictures of successful cloning

Para 3 The problems of Dolly and people’s concern

Fill in the blanks At first, the fact that Dolly developed ______ in a natural way was __________. Later, the news _____Dolly had become seriously ill was __________. Finally, the problem that occurred to the scientists was that a cloned animal lives _____________

the original one. Scientists were ________.

They doubted _____________________________________ (whether cloning would be successful in the future.)

Para 4 The impact of Dolly (attitude) People’s attitude:

Controversial

Objections:

the public imagination?Panic! Approvals:seeing the possibility to cure serious illness and produce human beings

Para.5

The reactions towards human cloning Q: What is the difficulty of cloning human beings? egg cells and embryos needed for cloning research are difficult to obtain.

Q: What are the different reactions?

evil leaders: Q: What are the reactions of governments? Nervous and more conservative.

Reform their legal systems and forbade research into human cloning. Q: How about China and UK? accumulate evidence of the abundant medical aid

China is devoted to produce some human organs to substitute the damaged ones, the procedure of which is called “cloned organs”

It is leading us to the medical field! Summary Cloning is a way of

an exact copy of another animal or plant. Cloning has two

uses. Firstly, gardeners use it to produce plants. Secondly, it is ________ for medical research on animals. Cloning plants is straightforward but the cloning of animals is more________.

The procedure is difficult to _______. In 1996, scientists succeeded in ______Dolly the sheep. Then came the disturbing news that Dolly was ill. ________ Dolly lived for six years and a half , Dolly’s appearance raised a storm of ________. Government became nervous and many _________ research into human cloning. Scientists still _______ whether cloning will help or harm us and where it is leading us.

After-reading: Discussion

Do you want to be cloned? Why or why not? Suggested answer: I don’t want to be cloned. Because even I am cloned, “she”

is not me. “she”

may differ from me in personality, temper and life style. But “she”

comes from me to some extent, which will make me feel confused. I will be puzzled about how to treat “her”.

What’s more, cloning human beings is forbidden by government, and I don’t want to take a risk.

Homework