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history of an invention;
2.Guide the students how to write the beginning and how to end an passage.
Teaching method: 1.Question-and-answer activities to go over the passive
voice and learn about the history of the invention.
2.Correcting mistakes with each other.
3.Display good examples from the students’ passages.
Teaching aids: Multimedia
Teaching steps:
Step 1: Greeting
Step 2: Warm up and lead-in:
T: Hey,boys and girls, what’s this?
Ss: It’s a piece of paper.
T: Yes,it is a piece of paper.Today we are talking about paper. As we all know,paper is one of the four greatest inventions in ancient China. And it played an important role in history of human civilization. Now,let’s watch a video about it,and then answer my questions.
Step 3: Presentation
1.Talk about the history of paper;
(After the video,ask and answer questions about the inventing of paper)T: Boys and girls, what was paper made from in ancient time?
Ss: It was made from waste cloth, used fishing net,bark and hemp .(Learn the new words-- bark, hemp)
T: I think it is amazing!Who was it invented by?
Ss: It was invented by Cai Lun.
T: And when was it invented?
Ss: It was invented in 105.
2.Talk about the importance of paper;
T:Do you know what paper was used for in ancient China?
Ss: It was used for ...
T:Yes,it was mainly used for writing and drawing. And when was it spread to the world? Please look at the map.OK,when was it spread to Korea?
Ss: It was spread to...in the 4th century.
T: That is to say, in the 4th century, people in other countries began to use paper.And at the same time,with the help of paper, China’s long and colorful culture could be spread to the world.And now,paper is widely used in our daily lives.What is it used for?
Ss: It is used for...
3.Talk about the problems that producing paper and wasting paper bring to the environment.
T: But in order to produce paper,a large number of trees are cut down. Many woods and forests are disappearing.And tons of paper is thrown away every year.The environment is badly polluted.