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1、HOW LIFE BEGAN ON THE EARTH?Reading Revision：天文学天文学大气层；气氛大气层；气氛基本的，基础的基本的，基础的原子原子水生有壳动物水生有壳动物两栖动物两栖动物爬行动物爬行动物哺乳动物哺乳动物形成形成发展发展astronomyatmospherefundamentalatomshellfishamphibianreptilemammalform develop formation n.development n.How does the earth come into being?Brainstorm:Pangu separates the sky f
2、rom the earth The Big Bang How Life Began on the Earth?Nuwa makes human beingsFast Reading Fast Reading Find out the main idea of the text Find out the main idea of the text The text mainly tells us how the earth began and how life develop on the earth.Main idea of each paragrapha.The importance of
3、water for life b.The development of plants and animals on the earth c.The formation of the earth d.A widely accepted theory about the formation of the universe e.The arrival of humans and their impact on the earthParagraph 5:Paragraph 1:Paragraph 2:Paragraph 3:Paragraph 4:Listening:Careful readingCa
4、reful reading Task 1：Read para 1 and answer the following questions.1.According to a widely accepted theory,how the universe began?2.After the“Big Bang”what began to form?The universe began with a“Big Bang”.After that,atoms began to form and combine to create stars and other bodies.Task 2：listen to
5、Para.2 and fill in the blanks.For several billion years after the _,the earth was still just _.Between _and_ years ago when the dust settled into_.It exploded loudly with _and_.They produced some gases,which were to make the earths _.As the earth cooled down,_ began appear on its surface.Big Banga c
6、loud of dust4.53.8billiona solid globefire rockatmospherewater waterPlants in the waterShellfish and fishPlants on landReptilesDinosaurshumanTask 3：How does the life develop on earth?Insects and amphibiansMammalsGlobal warming global warming Earth song How to protect the earth and make it a better p
7、lace to live on?Discussion:solar energy plant trees recycle rubbish prevent desertificationClear your plate low carbon lifeHow to protect the earth and make it a better place to live on?We have only one earth!We should take care of the earth!ks5u精品课件Homework Retell the passage according to the form.Do some exercise on exercise book-创新导学案sectionII
How life began on the earth
