+ T divides the whole class into many pairs

 + T asks  students to work in pairs to ask and answer about hobbies: collecting stamps

  + Firstly, T models a dialogue with one student

  + Secondly,T goes around the class to observe and helps them if necessary

   + T calls  some pairs  to make a dialogue in front of the whole class

  A: What is your hobby,Lan?

  B: Well,I like collecting stamps

  A: Could you tell me how you collect your stamps?  

  B: I buy them from post offiice.