Teaching Aids

　　a tape recorder, a projector and the blackboard

　　Three Dimensional Teaching Aims

　　Knowledge aims:

　　Let the Ss know about some scientists and their life and contributions. 

　　Get the Ss to learn how to talk about scientific work and how to describe a person. 

　　Ability Aims: 

　　Train the students' speaking ability by describing, talking and discussing. 

　　Train the students' listening ability. 

　　Emotional Aims: 

　　Train the students' ability to cooperate with others. 

　　Encourage the students to learn from scientists to show interest in scientific exploration and research. 

　　Teaching Procedure

　　Step 1 Greeting

　　T: Hello, boys and girls. 

　　Ss: Hello, Miss Wang. 

　　Step 2 Revision

　　T: Today we will begin our lesson with a competition between groups. In the last period, we learnt about John Snow who defeats "King Cholera". Now, please say something that you know about it. If you offer a complete sentence, you will be given ten marks. Your group will be given twenty marks when your expression is especially beautiful. 

　　S: John Snow was a well-known doctor in London, who attended Queen Victoria to ease the birth of her babies. 

　　S: He became inspired when he thought about helping ordinary people exposed to cholera, which was the deadly disease of his day. 

　　S: John Snow got interested in two theories explaining how cholera killed people. 

　　S: He believed in the second theory that is people absorbed this disease into their bodies with their meals. From the stomach the disease attacked the body quickly and soon the affected person was dead.

　　Ss: . . . 

　　(The teacher should encourage more students to join in the competition. At the end of the competition, the teacher should announce the result of this competition. Praise the winner and encourage the losers. )

　　T: What can we learn from John Show?

　　S: We should base our theories on practice. 

　　S: We are inspired to have a spirit of scientific exploration. 

　　S: We do some research with the purpose of serving the people and society. 

　　Ss: . . . 　

T: Yes, we can learn a lot from the scientist. In fact, there are a great number of people working on science worthy of being learned both at home and abroad. Can