Unit 2 DNA.docx

1、Unit 2 DNAUnit 2 DNALesson 9: Whats a “Horkey”? Teaching Content: Mastery words and expressions: helpful, at the same time Oral words and expressions: DNA, combine, juicy, mule, donkeyTeaching Aims: 1.Know more about cloning. 2.How to combine two different things.Teaching Important Points: 1.Talk ab

2、out the ability and inability. 2.The use of coordinating conjunctions. 3.Combine two different things.Teaching Difficult Points: Talk about the ability and inability.Teaching Preparation: picturesTeaching Aids: flashcards, audiotape, picturesType of lesson: new lessonTeaching Procedure:Step1. Lead i

3、n the class by showing some pictures about combining to the students. They may be about different things, such as food, fruit, animals and other things. Step2. Listen to the tape and answer the following questions: 1. Can Danny combine a donut and a pizza? 2.Who wants to combine a cow and a chick? L

4、et the students answer the questions with the help of the pictures. Finish the task in oral in class.Step3. Read the text and fill in the blanks with the correct words. 1.We can combine two different _ or two different _. 2.Brian would combine _ and _. Look through the whole text quickly and answer

5、the questions in class in oral.Step4. Encourage the students find the new words in this lesson. Give more examples and let the students understand more about the words. I would combine a donut and a pizza. Then I could have breakfast and lunch together. Then I would have little, juicy bananas. Do yo

6、u know what a mule is? It has a horse as mother and a donkey as a father.Step5. Read the text again and encourage them to find more questions about the text. One student stands up and asks a question. The others who want to answer can stand up and answer it as quickly as he can. For example: 1.What

7、would you combine? 2.What about combining a duck and a deer? 3.Can we combine apples and bananas? Step6. Come to “PROJECT”. Finish the task in groups of three or four students. Think about something that is combined by two different things. Each of the group writes his answer down and shows it to ot

8、hers. Then choose the most meaningful one to study.What will your group combine? What if you combine the two things? What can it do for us? Whats its advantage? Talk about the questions above, then sum their ideas. Give a report in front of the class. Demonstrate your ideas. Describe the thing that

9、you combine in detail. Describe its advantages and disadvantages.Step7.Homework 1.Finish off the exercises in activity book. 2.Go on the next reading in the student book.Summary In this lesson, we learn to combine two different things together. In order to get new living things, we must make full us

10、e of our imagination. What can the things that we combine are used for? It is important for us to discuss. During the discussion, we practice our spoken English.Lesson 10: What is DNA?Teaching Content: Mastery words and expressions: generally, twin, clone, not onlybut alsoOral words and expressions:

11、 blueprint, identical, egg, identifyTeaching Aims: 1.Know how to write a passage on science. 2.Learn something about DNA. 3.Know more about our body.Teaching Important Point: 1.Master the words and expressions of this lesson. 2.The ability and inability. 3.The use of coordinating conjunctions.Teachi

12、ng Difficult Point: The use of DNA.Teaching Preparation: picturesTeaching Aids: flashcards, audiotape, picturesType of lesson: new lessonTeaching Procedure:Step1.Lead in the text by discussing what DNA is. Divide the class into several groups. Then talk about the subject for several minutes. Then on

13、e of the groups presents their opinions in front of the class.Step2. Listening task: Listen to the tape and fill in the blanks with the correct words you hear. 1.Generally speaking, a _ is a drawing. 2._ for identical twins, each living thing has its own unique DNA. Play the tape once. Then let the

14、students try to finish the task in class in oral.Step3. Reading task: Read the text quickly and answer the following questions: 1.Where does your DNA come from? 2.Is your DNA in every part of your body? Finish the reading task in class in oral. Try to get more information about the text at the same

15、time.Step4. Read the text again. Find the sentences with the new words. Try to create situation about the new words. Then make sentences with the new words. If someone can make a whole story with the new words that we learn in this lesson, the teacher must encourage her. The sentences with the new w

16、ords: Generally speaking, a blueprint is a drawing. Identical twins are two children that grew from the same egg. They are clones. From your DNA, scientists can identify not only you, but also people related to you.Step5.Let some students tell some details about the text. What is DNA? Where is your

17、DNA from? What is DNA used for?Step6. Come to “LETS DO IT”. Finish the task with a partner. Find the things about you that show your parents DNA. Talk about if for a while. Then let some volunteers come to the front to talk about the subject.Step7.Homework 1.Finish off the exercises in the activity

18、book. 2.Go on the next reading in the student book.Summary: You look like your father or your mother. That identifies the DNA of your body from your parents. DNA is very fascinating. Each living thing has its own unique DNA. Try to find more ways to use the DNA in many fields. Discuss the use of DNA

19、 in this class. Make full use of it to help more people in the world in more fieldsLesson 11: Cloning People?Teaching Content: Mastery words and expressions: exactly, divide, crazy Oral words and expressions: human being, original, adult, Dolly, insectTeaching Aims: 1.Know more about cloning. 2.Crea

20、te the students spirit of cooperation.Teaching Important Points: 1.The advantages and disadvantages of cloning. 2.The expression of ability and disability. 3.The use of coordinating conjunctions.Teaching Difficult Points: The advantages and disadvantages of cloning.Teaching Preparation: picturesTeac

21、hing Aids: flashcards, audiotape, picturesType of lesson: new lessonTeaching Procedure: Step1: Show a picture of Dolly. Then let the students discuss what our life will be if we make a clone of ourselves. Divide the class into groups of three or four. Discuss for five minutes. Then present their res

22、ults to the class.Step2. Listening task: Listen to the tape and fill in the blanks with the correct words you hear. 1.The clones are the _ height. 2. There are _ ways to clone people. Finish the task in class in oral.Step3. Reading task: Read the text and decide whether the following statements are

23、true (T) or false(F). 1.We can make clones from dead animals. 2.Each clone would be a different person. 3.We can combine the DNA of pigs and dogs. Finish the task in class in oral.Step4. Pair work: Read the text again and find more details about the text. Try to solve the following problems. Talk ab

24、out them with your partner. At the same time, encourage them to ask more questions about the text. How many ways are there to clone people? What are they? Do you want a clone of your self? Why? What is the use of cloning? Try to finish it in a limited time in order to improve their comprehension abi

25、lity.Step5. Read the text by the students. Give the students time to listen to the tape again. Then make a chance for them to practice in front of the class. Step6. A debate Divide the class into two groups. One group is for the advantages of cloning. The other is for the disadvantages of cloning.Th

26、e teacher designs the task in order to find out the meanings of cloning.Step 7.Come to “LETS DO IT. This task is similar to the one is step6. This topic is about the food. The students can use their imaginations. Of course the best way is to search on the Internet for more information about the subj

27、ect.Step8. Homework 1. Search more information about cloning on the Internet or in the newspaper. 2. Finish off the exercises in the activity book.Summary: Cloning is a popular subject in the modern society. It is good for the students to know more about that. Encourage the students to find out more

28、 information on the Internet. They can use other tools to get more. Give them chances to present their results in the next lesson.Lesson 12: Did You Ever See a “Chorse”? Teaching Content: There are no new words and expressions in this lesson.Teaching Aims: 1.Know more about combining. 2.Find the dif

29、ferences between the Chinese and foreign songs.Teaching Important Points: 1.The expression of ability and disability. 2.The use of coordinating conjunctions. 3.Sing the song fluently.Teaching Difficult Points:Combine two different living things.Teaching Preparation: picturesTeaching Aids: flashcards

30、, audiotape, picturesType of lesson: new lessonTeaching Procedure:Step1.Show some pictures of animals to the students. Let them imagine what animals what animals they would like to combine. What would they look like? What are they used for? Divide the class into groups of three or four. Then discuss

31、 the questions for five minutes. After a while, show their results to the class in front of the class.Step2. Listen to the song and repeat after it. Play the tape for several times. Let the students to be familiar to the rhythm of the song.Step3. Read the song as a lyric. Then let the students make up other similar songs according to their imagination. Let some volunteers present their song to the class. Step4. Let the students try to sing the song together. Play the tape again. Ask them to sing after it for several times again. Step5. Ask some volunteers to sing in front of