Unit 4 Astronomy: The Science of The Stars
Teaching aims:
1. Enable students to improve their listening skills and reading ability. 2. Enable students to understand the development of gravity and how gravity
affects us in different times and places.
3. Arouse students ’ interest to search for the mystery of space.
Emphasis:
1. Words and expressions: gravity, float, cheer up, now that, break out, etc 2. Astronomic knowledge like gravity and black hole.
Difficulties:
1. Help the students to understand the development of gravity. 2. Help the students to know how gravity influences us.
Teaching methods:skimming, scanning, discussing.
Teaching aids: tape recorder, a projector and a computer. Teaching procedures:
Period one Reading
Step 1. Presentation
T: Hello, everyone!odayT 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.
’ ll learn something about How Life Began
T: Do you want to get more information? Today we
the Earth. Turn to Page 25. Let
’ s come to Warming up first.
Step 2. 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 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, measurehis blood pressureand 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 medicinecombinesbiologyand chemistry.What about biochemistryand 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 researchon it, we shouldknow many sciencesubjectsrelatedto it. Now discussthe
second question:
Whatdo we mean when we say we are studying a subject scientifically? Or what
’ s t
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 shoulddesign experiments,then analyzethe 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 scientist. So you should work harder if you want to be a scientist.
’ s not e
Step 3. 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 th
T: Nowplease look at the slide show. And discuss these questions with your partners. Then I ask some students to tell us their stories. Are you clear?
Ss: 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 who ’ d like to tell us a story? Volunteer!
S1: Let me try. In China, we all know that Pangu separates the sky from the earth.
人教新课标高一英语必修三教案：Unit4Astronomy全单元.docx
