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1、-高中英语必修三unit4教案-第 4 页二次备课河南省淮阳县实验高中教案主备教师： 雷欣 二次备课教师： 编号： 19 课 题：Unit4 Astronomy: the science of the stars Period 1 Wanrming Up and Reading 教学目标：1. Develop students reading ability and let them learn different reading skills. 2. Enable students to know about the development of the earth.教学难点：1. Enab
2、le students to understand the passage and know about the development of the earth. 2. Let students learn how to use different reading skills for different reading purposes.教学方法: Skimming, discussion, individual work and group work.教学过程： 【自研课导学】1. Let students learn the useful words and expressions i
3、n this part: astronomy, system, religion,theory, atom, billion, globe, violent, atmosphere.2. Get students to learn about the development of the earth.【展示课导学】Step1: Leading-inHave a free talk with students.1. Let students discuss the following questions:Who are our ancestors?Do you know what it was
4、like before life appeared on the earth?Do you know how life began on the earth? Do you want to get more information? 2.Tell students: Today we will learn something about how life began on the earth. Turn to Page 25. Lets come to Warming Up first.Step2: Warming up二次备课Let students think about the foll
5、owing questions and then discuss them with their partners.1. In our solar system eight planets circle around the sun. What are they? Can you match the names with the planets?(P25)2. What interests you in astronomy? Do you know any questions that astronomersare interested in?Step3: Pre-reading1. Get
6、students to discuss the questions with their partners.1) The origin of life on earth is a question that interests astronomers.What do you know about it? 2) Each religion and culture has its own ideas about how life beganon earth.What do you know about them?2. Ask them to read the title and look at t
7、he pictures. Predict what the reading will be about.Step4 : Reading 1. Fast reading :ScanningGet the students to read the passage quickly . Give ten minutes to lookthrough the whole text and answer questions:1). What is the passage about?2). Whats the main idea of the text? 2. Detail reading Choose
8、the best answer to each question according to the text.1). What is important for the beginning of life?A. The water on the earth.B. The earths atmosphere.C. The form of forests.D. Dissolving harmful gases.2) Which of the following appeared on the earth first?A. Insects.B. Reptiles.二次备课C. Amphibians.
9、D. Shellfish and fish.3) Which of the following statements true?A. Water still exists on Mars.B. The earths atmosphere is made up of oxygen and nitrogen.C. The earth had dissolved the harmful atmosphere into the oceans and seas.D .Plants provide oxygen to the earth.4) What is the passage mainly about?A. The appearance and development of life on the earth.B. The birth of the earth.C. Why dinosaurs died out.D. The fact that human begings caused global warming.Suggested answers:(1) A (2) D (3) D (4) A【板书设计】_【教学反思】_