Junior3Unit4Amazing____science

1、Junior 3 Unit 4 Amazing scienceTopic2. When was it invented? Section BTeaching aims and demands:1. Go on learning the simple past passive voice.2. Know about some modern technologies, especially the cloning technology. Discuss the advantages and disadvantages of the cloning technology.3. Foster stud

2、ents Positive attitude towards science.Teaching Procedure:Step1 Review and lead in T: Hello! Nice to see you again!Ss: Nice to see you, too.T: How are you these days?Ss: Im fine.T: Today, well learn the lesson of Unit4, Topic2, section B. But first, lets see some pictures together.Ss: OK!T: Whats it

3、 made ? Choose “of” or “from”?Ss: ofT: Read out the whole sentence, please?Ss: Whats it made of? Its made of iron.T: What is it used for?Ss: Its used for cutting things.(The repliers win a candy by answering. And some other pictures can be asked and answered by that way)Step 2 PresentationT: Whats t

4、his? (Show a picture about the light bulb)Ss: Its a light bulb.T: Whats it made of?Ss: Its used for lighting.T: Do you who invented it and when was it invented?Ss: Yes.T: Please look at these pictures. (Teacher shows the pictures about the inventions and inventors.) Watch a flash and then match.Ss:

5、(Do the exercise of matching)T: Are you OK?Ss: Yes.(The teacher let the students say out the answer and then check.)T: No, lets read after the flash and imitate the intonation and pronunciation.Ss: (Read after the flash carefully for one time)T: Very good. Ill give you some time to practice in pairs

6、. And then please play out the dialogue in pairs.Ss: (Do the pair work actively)T: (Teacher goes around the students to see the work in different groups. After several minutes) Are you ready?Ss: Yes. (The students read out the dialogue by pairs. The teacher gives the candies to the group which are t

7、he repliers in.)Step 3 consolidations.Task 1: Individual workT: After knowing these three inventions. I want you to know more about modern inventions. Please have a look (Show some pictures from 1b.) Do you want to know something about them?)Ss: Yes.T: Please listen to a piece of listening material

8、and do the exercise of 1b. (Play the listening material and let the students do it.)Ss: (Do the exercise of listening carefully.)T: Lets check the answers together.Ss: (Ss answer the questions together with the teacher.)Task 2: Pair workT: (Show some pictures from part4)Now, Id like you to tell me s

9、omething about these things. Can you?Ss: Yes.T: One minute for you to prepare, and then Ill give you the chance to say out.Ss: (Do the dialogues in pairs.)T: (Go around the students to help some students who are in need.) Lets have a check of your reading.Ss: (Play out by pairs of the volunteers)Ste

10、p4: Practice reading.T: We have learned so many inventions. Heres a picture for you. (Show a picture of Dolley.)T: Whats her name?Ss: Dolley.T: Was it invented?Ss: No, it was cloned.T: Very good. Would you like to .know more about the cloning technology.Ss: Yes, wed like to.T: Here are two questions

11、 prom the book.(Show the questions on the powerpoint). Please watch a flash about cloning and answer them.Ss: (Watch the flash carefully)T: Can you catch the ideas of these questions.Ss: Yes.T: Now, please answer the first question.S3: Dolly is a cloned sheep.T: Yes, youre right. And next?S4: DNA is

12、 used in cloning.T: Great! OK! Lets find out and think over the answer of question2: The advantages and disadvantages of cloning.S5: Cloning can save those animals in danger.T: Very good! (Show the point on the powerpoint.)S6: It can also benefit human beings.T: Perfect.(Show the point.)(The student

13、s answer the points about the cloning one by one, the teacher gives the candies to the group.)T: Now, we have known something about modern technology of cloning. Please read the passage again and discuss the passage, catch the main ideas of each paragraph.Ss: (Read the passage and discuss each other

14、 carefully.)T: Please give me your ideas of each paragraph.S7: Paragraph 1 tells is something about “Whats Dolley?”T : Good, Anything more?S8: Whats cloning?T: Very well. (Show the main ideas of the parggraph1) (Do the some way, the teacher help the Ss finish this part)T: Therere also some key point

15、s and useful expressions in the passage. Can you find them out.S9: So far. T: Good. Do you know the weaning?S9: Yes.(Teacher help the student explain the “so far”, and also show the examples it.)(Give the fine to the students to find the points and help them explain them, do just the same way above).Step5 SummaryT: We know the inventions and cloning. Do you want to know more