高中英语Unit 21 Lesson 2 《Brain Power》课件3 北师大版 选修7（ppt课件）

1、Brain Power,1,学习交流课件,Test your memory : Look at the following numbers for about one minute and then write down as many as you can remember .,73 49 64 83 41 27 62 29 38 93 74 97,How is your memory ? more than 9, 7-8 , 4-6 , less than 3,2,学习交流课件,Before you start : Complete the sentences with the follo

2、wing words .,atom , billion , cell , nerve cell , organ , function , sight , hearing ,fear,3,学习交流课件,atom , billion , cell , nerve cell ,organ , function , sight , hearing , fear,1.The eyes are the organs of . 2.How many are there in the universe ? 3.Human tissue (组织) is made up of . 4.The liver is a

3、n and so is the heart. 5.The population of China reaches up to 1.3 .,sight,atoms,cells,organ,billion,4,学习交流课件,atom , billion , cell , nerve cell ,organ , function , sight , hearing , fear,6.The of the heart is to pump blood through the body . 7.A is a tiny part of the body that helps carry messages

4、to and from the brain . 8.He will finish the job without of hardship or death .,function,nerve cell,fear,5,学习交流课件,Listening Strategies : Completing a text 1 Before you listen , read the text and predict what kind of information you need . 2 Underline some important words in the text before each gap(

5、空格) . 3 While you are listening , listen for these important words the information you need should follow them . 4 You can complete the gaps using abbreviations (简写) save time , then write them in full .,6,学习交流课件,Important word(s) and our predictions,For example :,1.consist of a color,2.weighs how h

6、eavy ?(number),3.energy how much ?(number),4. contain how many much ? (number),7,学习交流课件,Important word(s) before each gap :,1. consist of 6. are responsible for 2. weighs 7. controlling 3. energy 8. signals 4. contain 9. emotions 5. more than 10. own (language),8,学习交流课件,Listening : Listen to the sci

7、ence lesson . Use the strategies to complete the gaps in Ex 2.,9,学习交流课件,Listening : 1 Listen for the first time : get a general idea. Dont hurry to write down your answers . 2 Listen again : write down your answers and check with your partners . 3 Listen for the last time : check your answers again

8、and make sure they are right .,10,学习交流课件,Listening : Remember , you may need more than one word in each gap .,11,学习交流课件,Check your answers :,1. white,2. just over a kilo,3. 20,4. 100 billion cells,5. atoms in the universe,6. different functions,7. sight and hearing,8. all the time,9. fear,10. foreign,12,学习交流课件,A challenge : Look at the following words for about two minutes and then write down as many as you can remember . Try to find out their relationship . ( It