人教版必修三UNIT4reading阅读学案

精品文档英语科 必修三第四单元导学案课 题Unit 4 Astronomy: the science of the stars课 型reading学习时间第6周 第1课时教师寄语 If you think you can, you can. And if you think you cant, you are right.学习目标1、 Know the origin and development of life on the earth2、 Improve the students reading skills3. Take interest in astronomy and improve the awareness of protecting the earth学生自主活动材料课前知识储备：Step 1: Warming up: 1. How many planets are there in our solar system? What are they? On which planet does life exist? 2. How did life come into being? Did you hear any story?Step.prediction：Guess what the text will tell us according to the pictures and title of the passage.Step Skimming: Skim the passage to see whether you are right and match each paragraph with its main idea. Para1 the importance of water for life Para2 the arrival of humans and their effect on the earthPara3 a widely accepted theory about the formation of the universe Para4 the formation of the earth and appearance of waterPara5 the development of plants and animals on the earthStepCareful reading Task 1: Read para1 to para3 and answer the questions 1.How did the universe begin?2.How did water appear on the earth?3.Whats the importance of the presence of water on the earth?Task 2: read para 4 and 5 to list the correct order about the development of plants and animals on the earth （use the key words）1234578961110Task 3: Read the last paragraph to find out what is the problem caused by man.Step Discussion: “Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.”What should we do to solve the problem?Step Summary: Guide students to summarize what they have learnt in this lesson.Step Homework Writing:Human beings are putting too much carbon dioxide into the atmosphere, and it causes global warming. As a student what should we do to live a low carbon-dioxide life?学后