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1、2022年高中英语人教版必修3 Unit 4 Astronomy：the science of the stars period1 教案1Warming up & Reading Textbook Edition: NSEC Book3Sections: Module Unit4 Astronomy: the science of the starsTopic : How Life Began On The EarthTeaching Materials Analysis教学分析This lesson is mainly a reading skills training class. How
2、 life began on the earth, is the passage from Students Book 3 Unit 4 , is concerned with astronomy and how human beings first evolved on the earth and understand the universe around them. This lesson is the first part of Unit 4. Focusing on the topic of the unit, astronomy, students are trained to l
3、earn the knowledge about astronomy and the language used to describe the development of life through speaking and reading activities. Most importantly, students are supposed to mand the effective way of reading a expository writing written in the order of time and get trained to improve their readin
4、g ability, like skimming, summarizing the main idea of the passage, guessing the meaning of new words in the context and so on. Teaching goals 教学目标1). Target language目标语言a. Words and expressions: astronomy, theory, atom, billion, globe, violent, carbon, atmosphere, fundamental, harmful, acid, multip
5、ly, oxygen, exist, preventfrom, block out, cheer up, now thatb. Grammar: Noun Clauses as the subjectWhat it was to bee was a mystery. (主语从句)It was not clear whether the solid shape was to last or not. (主语从句)2). Ability goals 能力目标a. Enable Ss to talk about the science of the stars, the development of
6、 life. b. Enable students to improve their speaking skills and reading ability.3). Learning ability goals 学能目标a. Enable Ss to learn how to talk about the beginning of life on the earth.b. Foster the Ss interests of science and lead the Ss to study scientifically.c. Train the Ss creativity and expand
7、 their imagination.Teaching important points教学重点1). Talk about the beginning of life on the earth.2). Discuss the order of development of life.Teaching difficult points教学难点Understand the beginning of life on the earth.Teaching methods教学方法1). Task-based teaching and learning2). Cooperative learning 3
8、). Discussion and practice 4). Fast-reading, scanning and careful-reading Teaching aids教具准备Multimedia and PowerPointTeaching procedures & ways教学过程与方式Step 1 Lead inTalk about science subjectsT: Good morning/afternoon, everyone. What class do you have today?S1: Maths, English, Chinese, physics, histor
9、y, and geology.T: What other subjects do you have in school?S2: puter, chemistry, biology, music, PE, and politics. T: Which is your favourite? Why? S3: My favourite one is because its very interesting/exciting/instructive/S4: I like best because T: Which ones are science subjects?S5: Physics, chemi
10、stry, biology, geology and mathematics.T: All these subjects play an important role in the study of science. What subjects are used to study medicine? How about biochemistry? What about geophysics? What subjects are part of astronomy? S6：Mathematics and physics.T: Can you understand the following bi
11、ned science subjects?physics + mathematics = astronomygeology + physics = geophysics（地球物理学）T: What does astronomy deal with? S7: Astronomy is the scientific study of the universe and the heaven bodies (such as the sun, moon, and stars), gas, and dust within it.T: What do we call people who study ast
12、ronomy? S8: Astronomer. Step 2 Warming up Talk about universe and solar systemT: Lets follow this astronomer to learn about universe. How did the universe e into being? S9: After the “Big Bang”, the universe came into being. T: Do you know the solar system in the universe? What is it made up of? S10
13、: The solar system contains eight planets and many ets and other objects.(Note：According to the present day scientific study, there are only eight planets, with the Pluto excluded. Why the planets remove the Pluto?)T: Can you name the eight planets?S11: Mercury, Venus, Earth, Mars, Jupiter, Saturn,
14、Uranus, and Neptune. T: Which planet do we live on? Can you describe what it looks like?S12: Earth. It supports a variety of life and 70% of the earth is covered with seas or oceans. T: Is there life on other planets?S13: Not yet. T: Right, there is a famous saying “Water is the headspring of life”.
15、 But how did the water appear on the earth? If you want to get the correct answer, please read the passage on P25. It will tell you. Step 3 Reading Task1: Fast-readingFast reading for the main idea and the structure 1.Ask the students to number the paragraphs and pay attention to the first and the last sentences of each paragraph. 2.Ask the students to read the whole passage quickly and match the main idea of each paragraph. Para. 1 The development of plants and animals Para. 2 The importance of water Para. 3 The formation of the universe Para. 4 The arrival of human beings Par
