Using LanguageⅡ教学实录及点评

UNIT2 Cloning Using language The return of the dinosaurs? Teaching Goals:

1.Activate the Ss to show their opinions about the cloning 2. Enable the Ss to write and article on this debate.

Target Language:

Debate, issue, competition, in charge, topic, argument, reply to , summarize, profitable, donate, existence, embryo, justified, transfer, ethically I suggest that medical cloning is very important of curing serious illnesses that at present have no cure. I would like to suggest that medical cloning is not as simple as issue as my colleague claims. Teaching important & difficult points: How to organize the debating materials How to make a debate How to write a short composition of the debate

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Teaching methods

Task-based teaching method

Teaching aids

A computer and a projector Teaching procedure Step1. Warming Up 1.

Greetings 2.

Watch 2 short films of Jurassic Park.

Have you ever seen the film Jurassic Park?

What animals do you see in the film? Are they real dinosaurs?

Do you think it is possible to clone dinosaurs? Step 2 Reading (page 15) Skimming

1. Do the author believe the dinosaurs can be cloned?

The writer of the text _________.

A. is excited by the possibility of cloning fierce and extinct animals

B. believes that extinct animals can be brought back to life by cloning C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs

D. dreams of dinosaurs returning to the earth 2. Give some reasons why it is either impossible or unsuitable to clone extinct animals 2

Reason 1.You need perfect DNA. Reason.2.There is not enough diversity for cloned animals to overcome new diseases. Reason.3 It would be unfair to clone any extinct animals if they would have to live in a zoo. Detailed reading

.Answer the following questions: 1. Why shouldn’t you clone an extinct animal if there isn’t enough diversity in the group?

It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and increase its numbers. The zoo is not a natural environment for a wild animal.

2. Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years?

The DNA of animal more than 10,000 years old is not suitable for cloning, for it can’t survive so long.

Choose the best answers .

1. The film Jurassic Park is popular because _____. A. people are interested in the subject of cloning

B. all the actors are dinosaurs C. it was directed by a scientist who clones dinosaurs

D. it proves very interesting 2. The reasons why a group of cloned animals all die of the same illness

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do NOT include ____. A. they have the same arrangement of genes

B. there isn’t enough diversity in the group for it to overcome illnesses C. the illness is a new one

D. their arrangement of genes can not resist that new disease Post-reading

We can infer from the text that _____.

A. scientists are experimenting to clone dinosaurs B. dinosaurs will never return to the earth C. cloned animals will only live in the zoo D. the DNA of dinosaurs can only survive 10000 year Step 3.Discussion and Debate

Read the passage again and have an debate according to the requirement of Ex.2 on Page 16.

What is your opinion of cloning?

Step 4.Homework

Write a composition about the advantage and disadvantage of cloning according to your argument

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