Teaching Important Points

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

　　Help the students improve their listening ability. 

　　Teaching Difficulties

　　Train the students' listening ability. Especially listen and understand what the speakers mean beyond words. 

　　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