高中英语Unit4《thescienceofthestars》教案1新人教版必修3.pdf
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1、用心 爱心 专心- 1 - Unit 4 Astronomy: the science of the stars Part 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) Introduction In this period, after the warming up, students will first be guided to talk and share. Then they will be helped to read an exp
2、osition(说明文) entitled 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 t
3、o draw a tree diagram of the text and retell the story with the help of the diagram. The period will end in students having a discussionHow Did the Uni verse Begin? 用心 爱心 专心- 2 - Objectives To hel p students understand the texts forms and contents and learn about festival Astronomy To help students
4、communicate on the topic in focus with the words, expressions and structures learned in this unit Focus Words dissolve, exist,puzzle ,crash ,pull , float, exhaust Expressions in time, lay eggs, give birth to, block out, cheer up, now that, break out, watch out Patterns 1. It exploded loudly with fir
5、e and rock, which were in time to produce the water vapor, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earths atmosphere. 2. Nobody knew thatit was going to be different from other planets going round the sun. 3. It allowed the earth to dissolve harmful gases, which had
6、become part of the earths atmosphere, into the oceans 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 ea
7、rth into space. 7. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. Aids Multimedia facilities, tape-recorder, photos, diagrams 用心 爱心 专心- 3 - Procedures I. Warming up by learning vocabulary Good morning, class! Today, we are goi
8、ng to take Unit 4 Astronomy: the science of the stars. Before we read 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-reading 1. Looking and saying Have you ever wonde
9、re d how the universe began? Well Im sure you may have many answers to this 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 “
10、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. T alking and sharing Do you know how the universe began? I n the 1920s in California, astronomer Edwin Hubble observed distant galaxies using an extremely powerful telescope. He made two mind-boggling (unbelievable) discoveries. First
11、, Hubble figured out that the Milky Way isnt the only galaxy. He realized that faint, cloud-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 oth
12、er. In other words, the universe is expanding. The biggest thing that we know about is getting bigger all the time. 用心 爱心 专心- 4 - A few years later, Belgian astronomer Georges Lema?tre used Hubbles amazing discoveries to suggest an answer to a big astronomy question: “How did the universe begin?” 3L
13、istening and reading aloud Now please listen to the recording and then read the text aloud. Pay attention 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 underlining Next you are t
14、o read and underline all the useful expressions or collocations in the passage. Copy them into your notebook after class as homework. 用心 爱心 专心- 5 - Collocations from HOW LIFE BEGAN ON THE EARTH a 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
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