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1、 精品資料 第三冊第四單元第一課時(shí)閱讀導(dǎo)學(xué)案 Book 3 Unit 4 Astronomy: the science of the stars Warming Up & Reading Learning Goals: 1. Arouse students’ interest to search for the mystery of space. 2. Develop Ss’reading ability. Step I: Lead in Task 1: Go over words about names of sub

2、ject and scientists in these fields Hey. Do you like... Do you want to be an/a... biology(生物學(xué)) biologist(生物學(xué)家) chemistry chemist(化學(xué)家) Physics physicist(物理學(xué)家) geography（地質(zhì)學(xué)） geologi

3、st(地質(zhì)學(xué)家） music musician politics(政治) politician(政治家) astronomy(天文學(xué)) astronomer(天文學(xué)家） Task 2: Talk about something about astronomy. Here is the picture of the solar system.Can you locate (定位) the eight planets in

4、 the picture? Uranus Venus Earth Mars Mercury Jupiter Neptune Saturn solar system They are : 、 、 、 、 、 、 、 、 Research in class Read the text book in Page 25 “How life begin on earth”. Step 2 Thinking &Discussing (1) Scan and predict.

5、 What is the passage about? It is about how on the earth. (2)Skim and find the main idea of each paragraph Para. 1 The arrival of humans and their impact on the earth. Para. 2 The development of plants and animals on the earth. Para. 3 A wi

6、dely accepted theory about the formation of the universe. Para. 4 The formation (形成) of the earth. Para. 5 The importance of water for life. (2) Careful reading: read the text carefully,then fill in the chat of“ How life began on the earth” 1 small plants in water

7、water 3 2 shellfish and all sorts of fish 6 4 5 11. human 10. 7 reptiles (on land) 8 9 Step 3 Discussing and presenting your answers to your groupmats. Step 4Testing True (T) or False (F). 1. The earth appeared before the Big Bang happened. 2. The original atmo

8、sphere consisted of nitrogen and oxygen. 3. The main difference between the earth and other planets is that there is water on the earth. 4. Life began in water and then on land. 5. Mammals appeared before the development of dinosaurs. 6. Dinosaurs could give birth to young baby animals and pr

9、oduced milk to feed them. 7. Human beings produce too much carbon dioxide which causes the global warming on the earth. 8. According to the text, human beings would disappear in the end. Reading comprehension 1. How were stars and other bodies created? A .Atoms combined to create them. B C

10、louds of dust combined to create them. C.Water combined to create them. D. Gases combined to create them. 2. Which is the most important for life appearing on the earth? A. Fire B.Rock C.Water D.Clouds 3. It can be known from the passage that_____________. A. plants and animals appeared on

11、 the earth at the same time B. plants appeared later on the earth than animals C. early shellfish appeared earlier than plants D. .animals appeared later on the earth than plants 4. How many years did dinosaurs exist on the earth? A. More than 140 billion years B. .More than 140 million years

12、 C. .More than 140 thousand years D. .More than 140 years 5. Why can the earth become too hot to live on? A. Small clever animals produce more heat. B. .Small clever animals produce too much carbon dioxide. C. .Small clever animals don’t want heat to escape from the earth. D. .Small clever animals like to live on a hot planet.