1. Look at the pictures in 1a.Discuss with your group, in what order do you think they were invented? Try tonumber them [1-4].

　　2. Ss discuss with their partners and number the pictures.

　　3. Talking about the inventions:

　　A: I think the TV was invented before the car.

　　B: Well, I think the TV was invented after theTV.

　　Ⅳ. Listening (1b)

　　1. T: Tell Ss look at the pictures and years on the left.

　　2. Play the recording for the Ss to listen.

　　3. Ss listen to the conversation and try to match the invention with the proper year.

　　4. Play the recording again.

　　5. Check the answers.

　　Ⅴ. Pair work (1c)

　　1. Ss try to remember theinvention and the year.

　　2. Student B, cover thedates. Student A, ask Student B when the things in the picture in 1b wereinvented. Then change roles and practice again.

　　3. Let some pairs ask andanswer in pairs.

　　e.g. A: When was the telephone invented?

　　B: I think itwas invented in 1876.

　　...

　　Ⅵ. Learning the new words & Listening

　　Look at the pictures then learn the new words.

Work on 2a: