Using LanguageⅡ教案3

Unit 2

Cloning

一、Teaching aims 1.

Topics 1）Some information about cloning. 2）Talking about cloning. 2.

Function：

Foster right feeling about cloning.

二、Teaching procedures：

（一）Make sure the aim Some information about cloning. （二）Teaching procedures Step 1 Greetings and Lead-in Step 2 Presentation. 1.

Some picture about cloning. 2.

Questions:

Where have you seen dinosaurs? Can you see them in the real life? Why? Do you think it is possible to clone dinosaurs? Why or why not? 3.

Fast reading: Scanning( T or F )

4.

Scientists are still experimenting with cloning mammals because they think it can make money.(F) The animals that have disappeared from the earth, like dinosaurs, can be brought back to life through cloning.(F)

If we can clone any extinct animals, we should let them live in a zoo.(F) 4.

Careful reading Why should't you clone an extinct animal unless there is enough diversity in the group? Why is it wrong to clone an extinct animal if it would have to live in a zoo? Why can't you clone the DNA of animals that have been extinct longer than 10,000 years? 5.

Finish a chart about cloning 6.

Writing Nowadays, the controversial issue of cloning has been in the limelight and has aroused wide concern in the public. It’s quite understandable that the views of this issue vary from person to person. Some people are in favour of cloning, who firmly believe that scientists can bring the extinct animals back to life by cloning. It’s indisputable that cloning is a great process to produce quantities of commercial plants as well as new species of plants.

However, the cloning of the sheep Dolly attracted public’s attention but arouse a storm of objections. For instance, if heaps and heaps of evil leaders like Hillary attempt to clone themselves, a disaster will break out in the world. In addition, the objectors insist that cloning has a huge impact on genetic diversity. As for me, I suggest that cloning plays an important role on improving our quality of life. Needless to say, that cloning is an effective access to cure serious illnesses that at present have no cure. What’s more, not only can cloning assist us to acquire unknown knowledge about the creature, but it also is a wonderful breakthrough.

Step 3

Feeding back

1.The writer of the text __C_ 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.We can infer form the text that__B__ A.scientists are expermenting 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 10,000 years

三：Conclusion：

Information about cloning. 四：Homework：

Finish the writing exercise on workbook. .