1、Unit20 Lesson4 学习目标 By the end of the class, the students will be able to: Internalizing and externalizing the knowledge Enhancing scientific knowledge and interest in space exploration Inspiring and motivating students 学习过程 课堂活动 （一） 预习交流 Discussion Write down relevant key words: Before Reading : Wo
2、rd Guessing 1. boundary 2）barrier 3) primitive 4) permanent 5) spin （二） 合作探究 Just from reading the title , make a prediction about the main idea of the article. Write it Down. I think this article will be mainly about _ _ . First Reading P26 Ex.1 Second Reading P26 Ex.2 / P26 Ex3 Third Reading Task
3、1. P26 Ex4 Task 2 Summary: Classify the linking words Task 3 Linking Practice P74 Ex4 Task 4 Complete the sentences P27 Ex5 （三） 分层提高 Fill in the form with Detailed Information Event Time Country/Significance Sputnik I Soviet Union 1962 The beginning of the space race between the US and USSR the laun
4、ching of Hubble 1969 US 1990Telescope the International Space Station 1990 Exploring solar system ,looking for water on the moon now being built working as a permanent manned scientific base Further space projects such as Deep Space now To send cameras to find_ to be set up on the moon manned flights Some time later To other plannets （四） 总结归纳 （五） 巩固反馈 Finish the exercise
