1、河北省石家庄市第一中学高中英语 unit4 Astronomy Reading教案1 新人教版必修3教材章节Unit 4课题Astronomy课型Reading教学目标知识与能力知识内容重点词汇和短语 astronomy, atmosphere, system, violent, solid, explode, carbon, dioxide, oxygen, surface, planet, harmful, development, spread, method, depend, solar system, in time, preventfrom, depend on等级水平(A)识记(
2、B)理解(C)应用(D)分析(E)综合(F)评价能力目标Enable Ss to talk about the science of the stars, the development of life and space travel and gravity Understand the text 过程与方法Exercise while explaining ; interactive way情感态度与价值观Enable Ss learn how to talk about the beginning of life on the earth教学设计重点难点分析a. Talk about t
3、he beginning of life on the earth.b. Discuss the order of development of life教学技术设备blackboard and slides教学环节学习目标1、学习的主要知识New words and sentence patterns.2、需要掌握的方法Reading comprehension 课题概述1、 本节知识的主要意义The most important part in the unit and provides the most information2、 本节知识在知识体系中的地位和联系The core of
4、this unit. It calls for the students reading and comprehending ability.石家庄市第一中学教案教 学 环 节分 析 讲 解学生活动设计Step I PresentationT: Hello, everyone! Today well come to Unit4 Astronomy. Before that I have a question: Where do we come from? Or we can say: Who are our ancestors?S1: Monkeys!S2: Beijing Ren who l
5、ived many years ago.S3: Reptiles.S4: Mammals.S5: Amphibians.S6: Dinosaurs.T: Very good! Can you put them in right order?S7: Amphibians, Reptiles, Dinosaurs, Mammals, Beijing Ren T: Do you know what it was like before life appeared on earth?S8: It was full of water, perhaps.T: Before that, what was i
6、t like?S9: Sorry, I dont know.T: Do you want to get more information? Today well learn something about How Life Began on the Earth. Turn to Page25. Lets come to Warming up first.Step II Warming up 1. Read the three questions, while the students listen and follow.2. Give them some time to discuss the
7、 questions.3. Collect answers from the whole class.4. Check the answers while discuss.T: Ill read the three questions for you. You should listen to me carefully. (If students dont know how to discuss, show them an example.) For example, medicine. When someone gets very serious illness, he will go to
8、 the hospital. The doctor will examine him. He will take his temperature, measure his blood pressure and give him an X-ray, or a CT. For the whole process of the examination, what kind of science has been used?S1: Biology.S2: Chemistry.T: So we can say medicine combines biology and chemistry. What a
9、bout biochemistry and geophysics?S3: I think biochemistry combines biology and chemistry.S4: Geophysics combines geology and physics.T: What about astronomy?S5: Physics.S6: Mathematics.T: Very good. We should know that astronomy is a multidisciplinary subject and if we want to do some research on it
10、, we should know many science subjects related to it. Now discuss the second question: What do we mean when we say we are studying a subject scientifically? Or whats the correct attitude towards science? S7: We should be objective, not superstitious.T: Whats the correct way to prove a scientific ide
11、a?S8: We should design experiments to test it for several times.S9: Then we can analyze the results and draw a conclusion at last.T: Lets sum up the answers. To study a subject scientifically, we must try to be objective. In order to test our idea, we should design experiments, then analyze the resu
12、lts and draw a conclusion. Now we talk about the third question. What are the most important skills we need to be real scientists?S10: We should be very careful.S11: Be objective and logical.S12: We should be wise enough to design an experiment and write the reports clearly.S13: We should be able to
13、 draw conclusions from the experiments and not impose conclusions on the data.T: I think you have done great work. From the discussion we know that its not easy to be a scientist. So you should work harder if you want to be a scientist.Step III Pre-readingGet the Ss to discuss the questions on Page
14、25 with their partners. Then ask the Ss to tell their stories. Encourage the Ss to tell different stories. If they dont know any, tell them some.T: Now please look at the slide show. And discuss these questions with your partners. Then Ill ask some students to tell us their stories. Are you clear?Ss
15、: Yes, sir/madam.1.Do you know each religion or culture has its own ideas about the beginning of the universe?Please give an example if you know.2. Do you know what a scientific idea is?After the Ss discussion, teacher says the following.T: Now whod like to tell us a story? Volunteer!S1: Let me try.
16、 In China, we have Pangu separates the sky from the earth.T: Can you describe the story in details?S1: Sorry, I cant remember clearly.T: Who can? Nobody? Now Ill tell you. Look at the screen. Pangu separates the sky from the earth. The sky and the earth were at first one blurred entity like an egg.
17、Pangu was born into it. The separation of the sky and the earth took 18,000 years- the yang which was light and pure rose to become the sky, and the yin which was heavy and murky sank to form the earth. Between them was Pangu, who went through nine changes every day, his wisdom, greater than that of
18、 the sky and his ability greater than that of the earth. Every day the sky rose ten feet higher, the earth became ten feet thicker, and Pangu grew ten feet taller. Another 18,000 years passed, and there was an extremely high sky, an extremely thick earth, and an extremely tall Pangu. Then came the T
19、hree Emperors (the Emperor of the Sky, the Emperor of the Earth, the Emperor of the Men.) So these numbers came into existence and evolve like this. The number begins with one, becomes established at three, is completed at five, prospers at seven, and ends in nine. So the sky is ninety thousand li f
20、rom the earth.Other legends about the beginning of universeThe Biblical AccountIn the beginning God created the heavens and the earth. Now the earth was formless and empty, darkness was over the surface of the deep, and the spirit of God was hovering over the waters. And God said. Day 1 : God spoke
21、and separated light from darkness creating Day and Night Day 2 : God spoke and separated the water creating sky and ocean Day 3 : God spoke and created dry land Day 4 : God spoke and created the sun, moon, and stars Day 5 : God spoke and created living creatures in the air and sea Day 6 : God spoke
22、and created the land animals and man Day 7 : God rested and blessed this day calling it Holy India Brahma has created the world many times. This creation is repeated every four ages or yugas. There are four yugas in one eon or kalpa. In the beginning of each kalpa the world is a watery chaos. As Bra
23、hma thought beings were created. The demons were created by a wind from his rectum. After creating the demons he discarded his body which became night. He assumed a new body and out of his mouth came the shining gods or devas. This body was also discarded and became day. With his next body he create
24、d ancestor spirits. With his fourth body Brahma created human beings were created. This discarded body became the moon. With the fifth body Brahma had a strange thought and he created ogres, terrible creatures, that wanted to devour the primordial sea of chaos. In shock at what he had done he then c
25、reated ghouls, or Gandharvas. Finally he regained his senses and created birds, mammals, plants, and all the other life that we see today. Japan In the beginning was chaos until the heaven and earth separated. When this separation occurred the Three High Deities created two principles, the passive,
26、Izanami or the Female, and the active, Izanagi or the Male. It was these two people who are our ancestors.In the beginning the heaven and the earth were one. The In (Yin) and Yo (Yang) had not been separated. All that existed was chaos in the form of an egg. This egg contained the seeds of the creat
27、ion. Heaven, being made of the purer portion of the substance rose and the earth being heavier did not. As the heaven rose the islands began to be formed. Later a strange plant grew between heaven and earth which became a great male god. Two additional male gods followed. These three were formed by
28、the will of heaven. Following this six deities were formed and then Izanagi ( the male ) and Izanami ( the female ). Izanagi and Izanami were the first ancestors. They thrust down the jeweled spear of heaven into the sea. As they lifted the spear the liquid on the tip formed the islands of Japan. Eu
29、ropeCelticThere were giants in the past. These giants were the gods. During the first winter a large giant was made from the hoarfrost. When this giant was exposed to fire he naturally melted. The body of this giant became the world. His hair became the forests. His skull became the sky. His blood p
30、roduced the sea. His bones produced the mountains. In the middle of the earth on high mountains live the gods. The underworld is beneath, the land of the dead. South America IncaThe Incas worshiped a god named Pachacamac, also known as Viracocha. This god had originally risen from the waters of lake
31、 Titicaca and created the stars, planets, and the moon. Pachacamac created everything, including people, out of clay. Because he felt sorry for humans, Pachacamac sent his daughter, the moon god, to teach humans how to build houses, grow crops, and make clothes. The children of Pachacamac lived at l
32、ake Titicaca but could travel. When they traveled they were required to stick into the ground a golden rod they received from their father, Pachacamac. Each time this happened the humans would build a city.T: Are they interesting? Though they are interesting, they are only legends. We should believe
33、 a scientific idea. Whats a scientific idea?S2: It should be an idea coming from scientific theory.T: Quite right. Now well come to Reading. Thats a scientific idea.Step IV Reading.ScanningGet the Ss to read the passage quickly and accurately and meanwhile help the Ss to form a good habit of reading
34、. Teacher gives the Ss a couple of minutes to look through the whole passage. Tell the Ss to read the text silently and then ask some detailed questions about the text on the slide show with their partners. Teacher encourages the Ss to express their ideas.T: Were going to learn a passage about How l
35、ife began on the earth .Now lets look at the slide show. Read the text quickly and find answers to the following questions. Show the questions on the screen.1 What was there on the earth before life could begin? 2. Why do scientists think there has never been life on the moon?3. Why did animals firs
36、t appear in the seas?4. Why did green plants help life to develop?5. Why were mammals different from other animals?T: Now who can answer the first one?S1: Watervapour, carbon dioxide, oxygen, nitrogen and other gases.T: What about the second one?S2: Because there is no water on the moon.T: What abou
37、t the third one?S3: Because water allowed the earth to dissolve harmful gases into the oceans and seas. T: The fourth one?S4: Because green plants can take carbon dioxide from the atmosphere and fill the air with oxygen.T: What about the last one?S5: They were different because they produced their y
38、oung from within their bodies.T: Well done! Now turn to Page26 Comprehending1.I think you may continue to read it again to get more details.SkimmingIn this part, Ss will read the text again and then finish Part1,2 and 3.T: Now please skim the passage fast to finish Part1. Then we will check the answ
39、er.Key to Part1:BCBBT: Skim paragraph2 ,3 and 4 and finish Part2 and 3.Key: DBIGEHACFJT: For Part3, discuss them with your partner.T: Why is it wrong in films and stories to show dinosaurs and people together?S: Because dinosaurs died out long before human beings developed on the earth.T: Do you agr
40、ee with him?S: Yes.T: What about the answer to the second question?S: They are the cleverest animals because they have larger brains than any other creatures on the earth so far.T: Excellent job! Ill check how much you have learned about the passage.Step V ListeningListen to the tape for the student
41、s to follow and have further understanding of the passage.T: Read after the tape, then answer me some questions with your book closed.Play the tapeT: The first question: How did water come into being on the earth?(If one student cant answer completely, ask two or three or more students.)S: The explo
42、sion of the earth produced water vapor, which turned into water when the earth cooled down.T: No.2.Why is water important on the earth?S: Because water allowed the earth to dissolve harmful gases into the oceans and seas.T: No3, finish the following form.2 1 small plants in water4 insects(on land)5
43、3 green plants on land7896 forestsKey to the exercise:2.shellfish and all sorts of fish 5.amphibian(on land and in water) 7.reptiles(on land) 8.dinosaurs(on land) 9.mammals(on land)T: Thats all for this passage. Now lets deal with some language points.ExplanationT: Turn to page 25. Lets look at the
44、sentences: 1.It exploded loudly with fire and rock, which were in time to produce the watervapour.which leads non-restrictive attributive clause.in time: sooner or later; eventuallyIll see him in time.in time (for sth./to do sth.): not lateShe will be back in time to prepare dinner. in / out of time
45、: in/not in the correct timeThe audience clapped in time to the music.2. Nobody knew that it was going to be different from other planets going around the sun.be different from: not like someone or something else in one or more waysNote: We can use very, much, quite, entirely, totally to modify diff
46、erentCity life is quite different from country life.going around the sun is ing form that serves as attributive.Men breaking the law will be punished.Can you see the girl dancing with your boyfriend?3. Whether life will continue on the earth for millions of years to come will depend on whether this
47、problem can be solved.to come: serves as attributiveShe is the last person to do such a thing.depend on: something might only happen or be true if the circumstances are right for itOur success depends on whether everyone works hard or not.4. Walking does need a bit of practice now that gravity has changed. now that: because of the fact thatNow that Im free, I can enjoy music for a while.Now that youve grown up you can decide it yourself.Passage Analyzing I Text Chart .How life began on the earthwater1 small plants in water3 green plants on l
