高二英语教案：UNIT 4 THE SCIENCE OF THE STARS教学设计1（新人教必修3）.doc

1、Unit 4 Astronomy: the science of the starsPart 1 Teaching Design 第一部分 教学设计Period 1 A sample lesson plan for reading(HOW LIFE BEGAN ON THE EARTH)IntroductionIn this period, after the warming up, students will first be guided to talk and share. Then they will be helped to read an exposition（说明文）entitl

2、ed HOW LIFE BEGAN ON THE EARTH. Then the students may be asked to listen and read aloud，read and underline，read and understand difficult sentences，read and transfer information，read and translate, read to decide on the type of writing and summary of the text and finally read to draw a tree diagram o

3、f the text and retell the story with the help of the diagram. The period will end in students having a discussionHow Did the Universe Begin? ObjectivesTo help students understand the texts forms and contents and learn about festival Astronomy To help students communicate on the topic in focus with t

4、he words, expressions and structures learned in this unitFocusWordsdissolve， exist，puzzle，crash，pull，float，exhaustExpressionsin time, lay eggs, give birth to, block out, cheer up, now that, break out, watch outPatterns1. It exploded loudly with fire and rock, which were in time to produce the water

5、vapor, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earths atmosphere. 2. Nobody knew that it was going to be different from other planets going round the sun. 3. It allowed the earth to dissolve harmful gases, which had become part of the earths atmosphere, into the ocea

6、ns and seas. 4. This encouraged the development of early shellfish and all sorts of fish. 5. They produced young generally by laying eggs. 6. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. 7. Whether life will continue on th

7、e earth for millions of years to come will depend on whether this problem can be solved. Aids Multimedia facilities, tape-recorder, photos, diagramsProceduresI. Warming up by learning vocabularyGood morning, class! Today, we are going to take Unit 4 Astronomy: the science of the stars. Before we rea

8、d the text, lets turn to page 99 and get familiarized with the vocabulary first. Pay attention to the making of the word. Study the prefixes, roots and suffixes in the words.II. Pre-reading1. Looking and sayingHave you ever wondered how the universe began? Well Im sure you may have many answers to t

9、his question, but I have one that perhaps, you may not have heard of yet. I will be giving you my theory on this subject. Now look at the screen and listen to me telling you something exciting.科学家透露：宇宙可能有两个我们的宇宙和一个隐藏的宇宙共同镶嵌在五维空间中。在我们的宇宙早期，这两个宇宙发生了一次相撞事故，相撞产生的能量生成了我们宇宙中的物质和能量。 2. Talking and sharingD

10、o you know how the universe began?In the 1920s in California, astronomer Edwin Hubble observed distant galaxies using an extremely powerful telescope. He made two mind-boggling (unbelievable) discoveries. First, Hubble figured out that the Milky Way isnt the only galaxy. He realized that faint, clou

11、d-like objects in the night sky are actually other galaxies far, far away. The Milky Way is just one of billions of galaxies. Second, Hubble discovered that the galaxies are constantly moving away from each other. In other words, the universe is expanding. The biggest thing that we know about is get

12、ting bigger all the time. A few years later, Belgian astronomer Georges Lematre used Hubbles amazing discoveries to suggest an answer to a big astronomy question: “How did the universe begin?” 3Listening and reading aloudNow please listen to the recording and then read the text aloud. Pay attention

13、to how the native speaker is reading along and where the pauses are within each sentence. I will play the tape twice and you shall read aloud twice, too.4 Reading and underliningNext you are to read and underline all the useful expressions or collocations in the passage. Copy them into your notebook

14、 after class as homework.Collocations from HOW LIFE BEGAN ON THE EARTHa cloud of energetic dust（具有能量的尘埃）, combine into（合成）, move around the sun（环绕太阳运转）, become violent（变得激烈）, the solid surface（固体表面）, explode loudly（猛烈爆炸）, in time（及时，最终）, produce the water vapor（产生水蒸汽）, make the earths atmosphere（构成了

15、地球的大气层）, cool down（冷却）, on the surface（在表面）, be different from（与不同）, go round the sun（环绕太阳运转）, disappear from（从消失）, stay on（存留在）, show ones quality（显现某人的特性）, dissolve harmful gases（分解，溶解有害气体）, become part of（变成的一部分）, develop life（发展生命）, grow in the water（在水里生长）, fill with（用来填充，充满了）, encourage the de

16、velopment of（鼓励的发展）, millions of years later（几万年以后）, live on land（在陆地上生活）, live in the sea（在海里生存）, grow into forests（长成森林）, produce young（生出幼仔）, lay eggs（下蛋）, animals with hands and feet（长着手脚的动物）, spread all over the earth（遍布全世界）, develop new methods（发展了新的方法）, grow food（种植）, move around（迁徙）, go by（过

17、去，推移）, take care of（在意，照看好）, putinto（把带入，放入）, preventfrom（防止做）, escape from into（从逃离到）, become hot（变热）, depend on.（依靠，依赖，取决与）, solve a problem（解决一个问题）3. Reading and understanding difficult sentences Skim the text and identify the difficult sentences of each paragraph. You may put your hand up if you

18、 have any questions. 4. Reading and transferring informationRead the text again to complete the table below, HOW LIFE BEGAN ON THE EARTHWhat was the earth like after the “Big Bang”?Why was the earth different?How was life developed on earth?What did small clever animals do? HOW LIFE BEGAN ON THE EAR

19、THWhat was the earth like after the “Big Bang”?A cloud of energetic dust at first and then a ball around the sun. In time as a result of its explosion, water vapor and many other gases were produced to make the earths atmosphere. Water then appeared when it cooled down, offering the possibility for

20、the beginning of life.Why was the earth different?The arrival of small plants growing in the water filled the oceans and seas with oxygen, encouraging the development of small living things.How was life developed on earth?Carbon dioxide and air with oxygen helped life developed. First were insects a

21、nd amphibians, and then appeared reptiles and dinosaurs, producing young by laying eggs. At first, came mammals producing young from within their bodies.What did small clever animals do? With hands and feet, they spread all over the earth, developing new methods of growing food, hunting and moving a

22、round, yet neglecting the environment protection, causing new problems for human beings existence for good.5. Reading the text once again to decide on the type of writing and summary of the textType of writingThis is a descriptive writing.Main idea of the passageThe earth came into being after the “

23、Big Bang”. Then small plants came growing in the water, followed by green plants appearing on land. In the end appeared small clever animals.Topic sentence of 1st paragraphAfter the “Big Bang”, the earth was just a cloud of energetic dust.Topic sentence of 2nd paragraphThe earth was different becaus

24、e of the arrival of small plants growing in the water.Topic sentence of 3rd paragraphMany millions of years later the first green plants began to appear on land.Topic sentence of 4th paragraphSmall clever animals appeared and spread all over the earth.6. Going over the text to make a tree diagram an

25、d retell the story with its helpAfter the “Big Bang”, the earth being just a cloud of energetic dust.Small clever animals appearing and spreading all over the earth.green plants beginning to appear on landthe arrival of small plants wing in the water7. Reading and translatingAs you have read the tex

26、t times, you can surely put it into Chinese. Wang Hongqin, will you be the first to have a try, of putting the first paragraph into Chinese.8. Closing down by watching a movie entitled From the earth to the moon从地球到月球Through dramatization, this series relates the story of the conquest of the moon by

27、 the Americans, from the Mercury and Gemini projects to the legendary Apollo missions. “这是我的一小步，却是人类的一大步。”美国太空人尼尔阿姆斯壮在1969年踏上月球的那一刻留下了这句名言。这句话代表人类文明的跃进，宣告了太空时代的到来。在阿姆斯壮登月近三十年后，好莱坞巨星汤姆汉克斯、金奖导演朗霍华与王牌製作人布莱恩葛瑟三人斥资6800万美金将美国登陆月球的太空计画拍摄成迷你影集【飞向月球】，重现当年太空人的奋斗历程，并在充满史诗的气魄中纪录了所有的艰辛、骄傲、失败与悲壮的牺牲，为人类的文明写下了精彩的一页。