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Play a chant eliciting the words ：invent, inventions.
Look and say
Show the pictures of the four great inventions to help the ss master inventions and practice the sentence ... Is a great invention.
S1：The computer is a great invention.
S2: The train is a great invention.
Step2 While-task procedures
1.Play the recording of listen and say.
T: The children in Ms Guo’s class are talking about inventions. Listen to the conversation and name the inventions they talk about.
Ss: Paper, the watch…
2.Complete the chart
T: Do you know any great inventions ?What does Kitty think ?
Ss: She thinks paper is a great invention.
T: Why ?
T: Because people can ...
Look and learn
Show the pictures of the watch and travel .
Play the recording again and ask the ss to read it in role.
Listen and complete
What does Joe think ? Listen carefully ,then fill in the blanks.
Group work
Read the dialogue in groups.
Step3 Post-task activities
Read and guess
Show the riddles on P69 to review the words and the sentences.
Make a new riddle
Do a survey.
Do you know any great inventions in the world ?
I think _____ is a great invention.
People can ____________________
练习设计1. Complete the exercise on page 69.