发布时间 : 星期六 文章2019-2020学年高中英语人教版必修三Unit4全单元教案更新完毕开始阅读dd7d625ef58a6529647d27284b73f242336c318a
题。
2.5 泛读 是把Using language中的Reading和Workbook中的Reading task 整
合在一起。这两部分利用science fiction story向读者解释gravity和black hole.
2.6 写作练习是把Using language中的Writing 和Workbook中的Writing Task
以及Project整合在一起上一堂写作练习课。
3. 课型设计与课时分配（经教材分析，本单元可以用6课时教完） 1st period
Intensive Reading Language study Listening Extensive Reading Speaking Writing
2nd period 3rd period 4th period 5th period 6th period
IV. 分课时教案
The First Period Intensive Reading
Teaching goals 教学目标 1. Target language目标语言
重点词语：theory, atom, billion, globe, violent, carbon, atmosphere, fundamental, harmful, acid, multiply, oxygen, exist, prevent, dioxide 2. Ability goals 能力目标
a. Enable Ss to talk about the science of the stars, the development of life and space travel and gravity. Where do we come from? How did the universe begin? Why is the universe the way it was? How will it end?
How much do you know about universe? Do you want to have a space travel? Do you know something about gravity?
b. Understand the text and answer the following questions: What was there on the earth before life could begin?
Why do scientists think there has never been life on the moon? Why did animals first appear in the seas? Why did green plants help life to develop? Why were mammals different from other animals?
c. Enable the Ss to understand the details about the passage, choosing the correct answer according to the text and put the order of development of life into a time line and answer questions.
d. Retell the passage using key sentences. 3. Learning ability goals 学能目标
Enable Ss to learn how to talk about the beginning of life on the earth. Teaching important points教学重点
a. Talk about the beginning of life on the earth. Why did animals first appear in the seas? Why did green plants help life to develop? b. Discuss the order of development of life. Teaching difficult points教学难点
a. Understand the beginning of life on the earth. b. Discuss the questions:
What will our future be if the earth may become too hot for the lives on it? Why are humans the cleverest animals on the earth? Teaching methods教学方法 a. Skimming and scanning.
b. Asking-and-answering activity to check the Ss’ understanding of the text. c. Individual, pair or group work to finish each task. d. Discussion.
Teaching aids教具准备
A recorder, a computer and a projector. Teaching procedures & ways教学过程与方式 Step I Presentation
T: Hello, everyone! Today we’ll come to Unit 4 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 lived 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 it like? S9: Sorry, I don’t know.
T: Do you want to get more information? Today we’ll learn something about How Life Began on the Earth. Turn to Page 25. Let’s come to Warming up first. Step II Warming up
1. Read the three questions, while the students listen and follow. 2. Give the Ss several minutes to discuss the questions. 3. Collect answers from the whole class. 4. Check the answers while discussing.
T: I’ll read the three questions for you. You should listen to me carefully. (If students don’t know how to discuss, show them an example.) For example, medicine. When someone gets serious illness, he will go to 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 about 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, 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 what’s the correct attitude towards science?
S7: We should be objective, not superstitious. T: What’s the correct way to prove a scientific idea? 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: Let’s 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 results and draw a conclusion. Now let’s 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 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 it’s not easy to be a scientist. So you should work harder if you want to be a scientist. Step Ⅲ Pre-reading
Get the Ss to discuss the questions on Page 25 with their partners. Then ask the Ss to tell their stories. Encourage the Ss to tell different stories. If they don’t know any, tell them some.
T: Now please look at the slide show. And discuss these questions with your partners. Then I’ll ask some students to tell us their stories. Are you clear?