1、Unit 4 Astronomy: the science of the stars,Using Language,Listening,Gravity made everything fall back to the earth.,Isaac Newton,牛顿 16421727,Universal gravity万有引力,Pre-listening,Hes a Jew. Hes famous for his Theory of Relativity.,Einstein, Albert (1879-1955)爱恩斯坦,Relativity（相对论）,霍金,Black holes （黑洞）,Li
2、sten for the first time,1642-1727,1879-1955,1942-,Listening,Listen for the second time,Everything falls back to the earth because of a pull called gravity.,Gravity is different in space.,Black holes would eat stars and they may also push stars into space.,Listen for the third time,Newtons gravity wa
3、s about earth.,Einsteins idea about gravity was about universe.,Hawkings idea was about black holes.,Which sentence is correct?,1. I heard about how three men made mistakes when they tried to describe gravity.2. I heard about how three men wanted to find out about the beginning of the universe.3. I
4、heard about how the idea of gravity had developed over a long period of time.4. I heard about three scientists and their work.,answering the following questions,Reading,a visit to the moon,Do you want to visit the moon?,July 20th1969,Warming up,The photo from the moon,Chinas first astronaut-Yang Liw
5、ei,Write down the three ways in which gravity changed for Li Yanping.,scanning& skimming,3. It became very light.,The gravity became very strong.,2. The gravity disappeared.,His weights changed three times too. Now write them down.,He became very heavy.,He had no weight and could float around like a
6、 feather.,He was about one-sixth of his weight on the earth.,Speaking,What would you need?,Speaking task:,spaceship,spacesuit,water,Oxygen producer,a space camera,If we were going to the moon,Discussion,Fill in the chart.,spaceship with water to cool you,carrying oxygen tanks,spacesuit,spacebuggy,sp
7、acesuit,a rope to tie you to the spaceship,space food that you can eat easily,spacesuit,sunglasses,space camera,Students work in pairs and give each other a number of “does” and “donts”for going to the moon.When finished,you can write some suggestions of yours down and read them out to the rest of t
8、he class.,Discussion:,These words and phrases may help you:,Writing,Brainstorming for writing,What will we meet on the moon?,when,where,what,who,problems,Solve (how),writing an outline,How to write an outline?,Outline (main idea),The first paragraph(introduction),Body (your own ideas on the item),Co
9、nclusion (summing up),heading,summing up,You are expected to design 3 problems:,Main idea:explain the three problems you will have while visiting the moon.,Paragraph 1: problem 1 and how you will solve it.,Paragraph 2: problem 2 and how you will solve it.,Paragraph 3: problem 3 and how you will solve it.,Summing up: how successful the holiday will be if you follow this advice.,Homework,Write an article telling your teacher and classmates about your ideas and hopes for traveling in space.,
