Unit 4 Astronomy: the science of the stars(Period 1　Warming up and reading)

教學難點1. enable 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.三維目標知識目標1. get students to learn the useful new words and expressions in this part: astronomy, system, religion, theory, atom, billion, globe, violent, carbon, atmosphere, unlike, fundamental, harmful, acid, chain, multiply, oxygen, exist, thus, dioxide, puzzle, solar system, in time, lay eggs, give birth to, in one’s turn, carbon dioxide, prevent. . . from2. let students learn about the development of the earth.能力目標1. develop students’ reading ability and let them learn different reading skills.2. enable students to know about the development of the earth.情感目標1. train students’ interest in science and stimulate their love for astronomy.2. develop students’ sense of cooperative learning.

教學過程設計方案（一）→step 1 presentationhave a free talk with students.1. let students brainstorm the following questions:who are our ancestors?do you know what it was 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. let’s come to warming up first.→step 2 warming uplet students think about the following 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?venusearthmarsmercuryjupiterneptunesaturn2. what interests you in astronomy? do you know any questions that astronomers are interested in?→step 3 pre-reading1. get 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 began on earth. what do you know about them?2. let them tell their stories. encourage them to tell different stories. if they don’t know any, tell them some, for example, pangu separated the sky from the earth, pangu turned into a myriad of things, nuwa made men, and so on.3. ask them to read the title and look at the pictures. predict what the reading will be about.→step 4 reading1. fast readingget students to read the passage quickly and then write down the main idea for each paragraph and the whole passage in the following chart.how life began on the earthparagraph 1