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1、Unit 6 When was it invented ? 教学设计 Section B (1a-1e) 哈尔脑初中：王智慧一、教学目标： 1.语言知识目标：1)能掌握以下单词：crispy, salty, sour, by mistake, customer 2)能掌握以下句型： Potato chips were invented by mistake. The customer said they were not salty enough.2.能力目标：能谈论物品被发明的时间、发明者，表达某发明的用途。3.情感态度价值观目标：了解世界上一些对人类有着重大意义的发明的相关信息，开阔学生的
2、眼界，养成勤于思考，善于发现的好习惯，培养学生的创造精神。二、教学重难点1.教学重点： 1)掌握本课时出现的生词及用法。2)进行听力训练，提高综合听说能力。 2.教学难点：听力训练。三、教学过程step 1.Warming up1.Let Ss watch an interesting picture. 2.Ask some questions about them. (1)What did they eat? S1: Ice cream. (2) What do you think of the ice-cream? S2: Sweet, cool, and delicious! Well
3、lets look at some other delicious food, please. Step 2.Talking Work on 1a 1.Tell Ss that the words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word. 2.Ss work with their partners and try to write some proper words under the pictures
4、. 3.Let some Ss read their answers. Try to remember the new words. Work on 1b 1.Let some Ss read the adjective words in the box. Make sure they all know the meaning of each word. 2.Ss discuss with their partners. Try to write the name of a different food after each word.Learn the new words together:
5、Step 3. Listening Work on 1c 1.Tell Ss the conversation is about how the potato chips were invented. The story is very interesting. 2.First, let one Ss read the sentences in 1c. Make sure they know the meaning of each sentence. (1)Potato chips were invented by mistake. (2)They were invented in 1863.
6、 (3)The customer thought the potatoes were not thin enough. (4)The customer said they were not salty enough. (5)George wanted to make the customer happy. (6)The custom was happy in the end. 3.Play the recording for the Ss. Listen for the first time. Play the recording again and judge T or F.Keys: T,
7、 F, T, F, F, T4.Listen and answer the questions. 1.Who invented potato chips? 2.When were they invented?3.What did the custom order at the restaurant?4. What did the custom think of the potato chips George cooked at first? 5.How did George cook the potatoes then?Work on 1d1.Let Ss read the article i
8、n 1d first. Tell Ss to listen again and fill in the blanks with the right words. 2.Play the recording again for the Ss to listen and write the words. The History of Potato ChipsDo you know how potato chips were invented? Potato chips _ by a cook called George Crum. They were invented in _. George Cr
9、um cut the potatoes really, really _ and then cooked them for a long time until they were _. Finally he put lots of salt on them so they were _. Keys: were invented, 1853, thin, crispy, really saltystep 4.Pair work 1.Work in pairs. Make a conversation about the invention of potato chips. Use the inf
10、ormation in 1c and 1d. 2.Ask some pairs to act out their conversation in front of the class. Step 5.Exercises 拉链是什么时候被发明的？ _ _ the zipper _? 它于1893年被发明。 It _ _ in 1893. 它是由谁发明的？ _ _ it invented _? 它是由惠特科姆贾得森发明的。 It _ _ _ Whitcomb Judson. 茶叶什么时候被带到朝鲜去的？ _ _tea _ to Korea? 茶叶在六到七世纪之间被带到朝鲜。 It _ _ to K
11、orea _the 6th and 7th centuries. 热冰淇淋勺用来做什么？ What _ the hot ice-cream _ _? 它用于挖很冷的冰淇淋。 Its _ _ _ really cold ice-cream. 电话机在1876年被贝尔所发明。 The telephone _ _ _ Alexander Graham Bell in 1876. 贝尔于1876年发明了电话机。 Alexander Graham Bell _ the telephone in 1876. Step 6 Summary Step 7 Homework1. Remember the new words ,phrases and sentences.2. Preview the passage on Page 46.
