Using LanguageⅡ公开课教案

Teaching Design of Unit4

Cloning Using Language

THE RETURN OF THE DINOSAURS?

Zhai Xinling 1. Lesson type: Reading. 2.Resource analysis:

The central topic of this unit is to talk about cloning. The topic isn’t closely connected to their real life. Through learning this unit, students can know some about this new technology. According to the “English Curriculum Standard (2011)”, students should be able to use reading skills while reading, such as word guessing, analysis the structure of the complex sentence. Learning these reading skills lays a solid foundation for students in the future.

On top of that, audio of the text, exercises and some related pictures will be included in the class to arouse students’ interest.

3. Student analysis: The students are from a regular class. Compared to the students in the experimental classes, they are poor in communicating with others in English. In this class I will focus on this problem. 4. Teaching objectives:

1) Knowledge aims: Words and phrases: strike, initial, resist, drawback, merely, strike......into one’s heart, from time to time, bring back to life, in vain

2) Ability aims: ①Students will master the key words and phrases. ②Students learn how to solve a problem step by step. 3)

Emotional goals: Inspire the students interest of study by learning the text and develop the students’ spirit of exploring science in the future.

5. Teaching important and difficult points: 1）Master the usage of the key words, analysis the structure of some sentences and the text. 2）Can tell the reasons why it is impossible to clone dinosaurs. 6. Teaching aids: Blackboard, Chalk, Computer, PowerPoint 7.Teaching Procedure Lead-in:

Warming-up.(1min)

Step 1 Pre-reading. Let students watch a piece of video then answer the questions（3min）

1.What animals do you see in the film?

2.Can you see them in our real life? Why? 3.Do you think it is possible to clone dinosaurs? Why?

(Justification: Activate students to be prepared about the topic of the text. Inspire their interest of learning English.) Step 2

Listening (4 min) Listen and arrange according to time. 1. research using the embryos of mice

2. first experimental clones of cows 3. first experimental clones of mice

4. work on embryos of sheep and mice 5. China’s first cloned twin calves

6. cloning of frogs

7. first clone of a mammal

8. cow gave birth to a bison

( Justification: This step is mainly to enable students to know about the history of cloning. It also can help students learn to obtain information from listening.）

Step 2

While-Reading 1)

Fast reading(5 min) ①Read the text and match the main idea with each para.

(3 mins) Para 1

A

explain the impossibility of cloning dinosaurs. Para 2

B

conclude that it's just a dream. Para 3

C

introduce the topic of the passage. (Justification: Students will be able to be clear about the structure of the passage.)

②Skim the passage and choose the right answer. (2min) What's the writer's attitude towards cloning the dinosaurs?

A. Supportive.

B. Neutral(中立的). C. Negative(否定的).

D. Subjective(主观的). There are also may some similar choices like : objective(客观的), positive(肯定的), optimistic(乐观的)...... (Justification: This step is aimed at developing students skimming skill and practicing how to find clues in the passage and in this step I guide students in their reading methods.)

2) Detailed reading: (20min) Read the passage again and answer the following questions. (3min) 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 原文呈现：The popularity of films such as Jurassic Park, in which a scientist clones several kinds of extinct dinosaurs, proves how the idea struck a mixture of fear and excitment into people's hearts.

（Justification: Ask students to find out the sentence that can support their answer in the text, help them analyse the structure of the complex sentence and let them pay attention to the word “strike”.)

strike 含义面面观：(strike-struck-struck) ①.On my way home from the bank, someone came at me from nowhere and stuck me on the head.

(

) ②. It suddenly stuck me that I should have been in favour of him.

(

) ③. I was about to strike a match when I remembered Tom's warning. (

) ④. The workers went on strike for better working conditions.(

) ⑤. The clock is striking 12. (

) (Justification: Students can find out the answer in Para 1and they will know more about the word “strike”)

2. The initial requirement of cloning is ___________________________________. The word “initial”here means________.

A most thankful

B most pressing

C most difficult

D most needed 3. The reasons why a group of cloned animals all die of the same illness do NOT include_________. A. they have the same arrangement of genes B. there is not enough diversity in the group to overcome the illness

C. the illness is a new one

D. the arrangement of genes can not resist that new disease.

The word “resist”here means________.

A fight against

B slide

C hire

D indicate ①.On hearing the joke, I was unable to resist

(laugh).

②. Jack couldn't resist ________ (make) jokes about his nose. 4. Why is it wrong to clone an extinct animal if it would have to live in a zoo?

5. 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 10 ,000 years 原文再现：Based on what we know now, you can't clone animals that have been extinct longer than 10,000 years. Actually, dinosaurs disappeared 65,000,000 years ago. 仿写：根据我们所学到的，我们可以得出的结论是克隆人类有可能成为实现。

(Justification: From questions 2-5, students will be able to find detailed information from the text and have a further understanding of the text. They will know why it is impossible to clone dinosaurs. And they can learn the usage of some key words.)

Step 3 Post-reading (12min) ① Read the text as fast as you can and fill in the blanks with the right form of the words.

Have you ever forgotten the film called The Jurassic Park? Have the nail-biting actions in the film_______(strike) a mixture of fear and excitement into your heart?

But

fact we are a long way from being able

(clone) extinct animals. Scientists are still experimenting with cloning mammals and the cloning of mammals is still a new science.

From time

time people suggest that extinct animals like dinosaurs, can possibly be brought back to life through cloning.

(fortunate),with what we know now, this is either impossible or

(suitable). There are many reasons. All efforts of cloning an animal will be in vain

there is not enough diversity in the group to overcome illnesses . Diversity in a group means

(have)

animals with their genes arranged in different ways. The advantage is that if there is a new illness some of these animals may die, but others will survive and pass on the ability to resist that disease to the next generation. The great drawback to cloning a group of animals is that they would all have the same

__________(arrange) of genes and so might die of the same illness. So the chance of dinosaurs ever returning to the earth is _______(mere) a dream. Key points: 1.strick......into one's heart

使......刻骨铭心

2. in fact =as a matter of fact=actually=in reality 事实上

3. be able to do sth.

能够做某事

4. experiment with...... 用......做实验

5. from time to time=occasionally=now and then

不时；偶尔

6. bring back to life

使复生；使复活

7. fortunate(adj.)--fortunately(adv.)--unfortunately 8. in vain

白费力气；枉费心机

9. mean to do sth.

做某事

mean doing sth.

意味着做某事

10. some......others.......

一些......其他的...... 11. drawback =disadvantage=shortcoming

缺点

12. arrange(v.)--arrangement(n.) 安排；排列

13. mere(adj.)--merely(adv.)=only

仅；只；不过

(Justification: From this part, students can understand the text as a whole. Then help them find out the key points of the text. )

② Conclusion People interested Not only film makers but also _________________.

in cloning Reasons for its Perfect DNA is needed.There is not enough _____ in the group. impossibility

A (n) _________ would be needed for the cloned extinct animals. Conclusion The chance of dinosaurs returning to the earth is ______________ now. (Justification: Training students’ ability to summarize.

And according to the chart, students can further understand the structure of the text clearly.)

Step 4 Teamwork(1 min) Tell students to discuss in groups after class, write about their opinions of cloning. Every coin has two sides......

Cloning is useful because...... It is a bad thing because...... As for me, I suggest that ...... (Justification: For this part, I use one minute to explain what the students will do after class. And

I give them an example that I have written the opinions about cloning to make the task easier. Then students will give more opinions after discussing.)

Step 5 Homework:

1. According to what we have learned , rewrite the text.

2. Writing down your opinions about cloning. (Justification: Make students review and master what have learned in this class.) 8. Blackboard design: THE RETURN OF THE DINASAURS

Word bank: strike resist ......

impossible or unsuitable: 1.

Perfect DNA 2.

Diversity to resist the diseases 3.

A suitable habitat 9. Teacher’s reflection:

In this section, through my guidance, I have highlighted the main position of students and basically achieved various goals. Through the design of various links, from shallow to deep, from small to large, we have deepened the theme step by step and strengthened the ability of students. The use of multimedia audio-visual functions inspired the

students’ enthusiasm of learning English.

One class couldn’t cover all the language points and provide enough chances for students to practice and use them in real context. If time permits, I will give students some time to discuss in class. Then learning efficiency will be better. In the following class, I will provide more chances for the students to analyze the text and use some structures in real context.