Unit 4 Astronomy: the Science of the Stars
Using language 教学案例
教学目的:
知识目的：理解太空行走时产生重力和相应的体重变化。
才能目的：学生能掌y 1: Scanning
1. Who do I have a chance to travel to the moon with ?
2。 How did we travel to the moon？
3。 What’s the writing order in this text?
4. How many times would the force of gravity change on our journey？
Which change would be the most powerful？
Activity 2: Careful reading
Read Para。2 and underline the sentences about the gravity and our weight during the journey。 Pay special attention to their three times' of changes。 Then do the following match work。
What happened to me when I tried to step forward? Why?
Why was returning to the earth very frightening?
How did I feel?
【设计意图】将泛读文本a visit to the moon融入到参观的第二站“漫步太空”中，带着学生体验一次太空之旅，并通过几个任务环节使学生掌握文章大意及月球旅行时重力和相应体重的变化，同时训练学生一些阅读技能，比方寻读，归纳。
Step 4：： The Third Stop： Wonderful Home—Discussion (Speaking)
Suppose someday we are going to live on the moon， what problems will you meet with? To solve these problems, what things will you take？
Example： If I lived on the moon， I might have problems。 The first one is···· Because ···· To solve this problem, I would take····with me。 The second one is ···· ····
Group 1…Group 2…
Problems： How to breathe; what to eat; how to cool you； what to dress…
Solutions： oxygen tanks, space food; water； spacesuit…
【设计意图】本讨论属半开放式的,有朝一日，我们在地球上住不下去了，要住到月球上去,会怎么样？关
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