Unit16Scientistsatwork2

1、精品教案设计资料Unit 16 Scientists at work2Unit 16 Scientists at work 涓 6 前低邮纭 就巴汽辣？1. Develop the students reading ability, especially their reading comprehension. 2. Read the reading passage and know about 3. Enable the students to know the serious attitude to scienee.浜 屻？佹暀瀛繃绋 ?Step 1 Prese ntatior锛塚暣浣撴劅

2、鐭乃級Do you know then ames of some famous scie ntist? What are they famous for? Ein ste in Darwin Newt on Edis on Marie Curie Fran kli n Relative theory Evoluti on Gravity Electric Bulb Radioactivity Kite experiment Today we come to the Reading. It s about As we all know ,Benjamin Franklin is a famous

3、 politician锛嶣 ut today, we will read a passage about him as a scientist. His serious attitude to science .Le鈥檚 see how Franklin made his famous electricity experime nt by flyi ng a kite 锛?Step 2 Pre-read ing discussi ons We all know that it is the scie ntists鈥?great effort that makes the great achie

4、veme nt on scie nce. Could you n ame some scie ntists names? And what are they famous for? Try to fill in the blanks of the following form, if youcant, ask your classmate to help you锛嶧 orm: in the 18th & 19th centuries scientists all over the world made many important discoveries锛嶨 ive some example锛

5、嶱 hysics Medicine Chemistry Biology Some famous scie ntists are: Archimedes: mathematics and physics: he discovered pi 蟺)Darwin: biology: he discovered that the an cestors of people were mon keys Curie: physics: she discovered radium and radi 卢 activity Newt on: physics: he discovered why all things

6、 fall dow n to earth. Physics Medic ine Chemistry Biology 鑒？Madame Curie 鑒?Florence Nightingale 鑒歐 atson & Crick 鑒欱 eatrix Potter (Radioactivity) (Pie charts) (DNA) (seeds of mushrooms)鑒?Isaac Newton 鑒?John Snow 鑒欸 ay-Lussac鑒欳 harles Darwin (gravity) (spread of disease) (Gas laws) (Evoluti on)鑒?Lord

7、 Kelvi n 鑒?Louis Pasteur 鑒？Me ndeleev 鑒？Carl Linn aeus (lowest temperature) (germs) (Periodic Table of eleme nts) (Nami ng pla nts) Step 3Read ing Fast read ing Liste n to the tape and an swer the follow ing questi on. 1. Was the experime nt done in June 1752 successful? Yes, the experime nt was suc

8、cessful 2. What did this experime nt prove? This experime nt proved that light- ing and electricity were the same. Read the text carefully again, and give the students some explanations. Get the students read the test and then decide if the following statements are true (T) or false (F). 1锛嶪 n 1752

9、scientists already knew what electricity is. T 2锛嶧 ranklin was helped by a friend to do the experiment. 3 锛嶧 ran kli n made the kite of silk because wet silk does not con duct electricity. 4锛曉 condenser was used in the experiment to store electricity. T 5锛嶵 he key tied to the stri ng was put into th

10、e door to stop he kite from flying away. 6.Fra nkli n con ducted the kite experiment in sunny days. Read he passage and then find out the main idea 锛?Paragraph 1 Introduction of Franklin鈥檚 experiment 锛?Paragraph 2鈥? The process Of the experime nt 锛?Paragraph 4鈥? The tip of doing the experime nt 锛?Ai

11、m: To show that lightning and electricity are the same. Materials: Some wooden sticks, a piece of silk, some rope, a very sharp piece of metal, a silk ribbon, a key, a condenser, a small shed, a thunderstorm with lightning. Instructions: Paragraphs 5 and 6. Description: Paragraph 3. Results: The ele

12、ctricity stored in the conden ser can be used to do other Experime nts, which proves that light ning and electric 卢 ity are the same. Discussion: None. Step 4 Listening to the reading passage Play the tape for the students to listen and follow. Pay attention to the pronun ciati on and in ton ati on.

13、 Step 5 Post-read ing An swers to Exercise 1:1 True 2 False 3 False 4 True 5 False Suggested an swers to Exercise 2: 1 He wan ted to prove that light ning and electricity are the same thi ng. 2 A silk kite will last Ion ger in bad weather than a pa卢 per kite. 3 Yes. Franklins experiment was very dan

14、gerous b卢 cause if someth ing went wrong he could be killed by the light ning. An swers to Exercise 3:1 In correct 2 Correct 3 In correct 4 Correct Exte nsion 1 Fran kli n said, You can collect and store the electricity with the condenser and use it for other experime nts. Ask stude nts what other k

15、inds of simple experime nts could be done using the electricity stored in the conden ser. Benjamin Fran kli n con ducted many experiments in his life. You might want your Ss to go on the Internet to find out what they were and report back to the class. Step 6 Summary the purpose of the experiment To show the lighting and electricity are the same: Time: June 1752 People: Fran kli n, his son Place: a shed in the fields Weather: Thun derstorm, ra iny day Fou