新目标Unit9SectionB.doc

新目标英语九年级 Unit 9 When was it invented?Section B (1a,1b,2a,2b,2c) 黄 花 Teaching Aims and Demands 1.Knowledge aims:To learn the new word: crispy, salty, sour, by mistakes,chef, sprinkle.To learn some useful sentences about the history of potato chips. 2.Ability aims: To train students abilibities of listening and speaking .To deveop students communicative competence.3.Emotion and attitude aims: To tell green food from junk food . To deveop students interest in English .Teaching Important Points Listening and understanding the history of potato chips.Teaching Difficult PointsListening for key information .Teaching Methods Listening and speaking method.Task-based teaching method .Teaching AidsA tape recorder, oranges, apples, potato chips, candies Teaching procedures and waysStep1 Greeting and Revision1.Greet the class as usual and let a student make a duty report.2.Review the passive voice by practicing conversations with students.Sample conversation: A: When was the light bulb invented? B: It was invented inA: Who was it invented by?B: It was invented byA: What is it used for?B: It is used forStep2 PresentationActivity 1: Show a box to the students and ask several students to come to the front to do a blind taste test.After tasting,these students need to tell how each food tastes and guess what food it is.For example:It is sour.I think it is an orange.Then the teacher write down the words of tastes on the blackboard.(sweet, crispy, salty and sour)Activity2: Ask students to write the description words under the correct pictures.(1a)Step3 Game Divide the students into four groups.Each group chooses a taste from four . Then write down more names of food as quickly as possible after each word on the blackboard. The group that wrote most and best is the winner.Sample answers： sweet: honey, cakes, candies crispy: salad, potato chipssalty: pizza, French fries sour: grapes, pickleStep4 Listening(2a&2b) This activity provides some listening practice.Task1: listen and circle “T”( for true) or “F” (for false). (2a) Before listening, point to the six sentences. Ask a student to read the first sentence , and ask another student to say what the sentence means.Continue this way with each sentence.Then play the recording twice and check the answer.Task2: Complete the sentences. (2b) Read the insructions to class and point out the blanks in the sentences in the story.Then play the recording, ask students to fill in the blanks. Check the answers together.(The teacher write down the key words on the blackboard.)Step5 Pairwork（2c） This activity provides oral practice using the target language.T: After listening to the tape,can you tell me when and how potato chips were invented? Who invented them? Now read the instructions of 2c.Discuss with your partner and role play the conversation.After several minutes , ask some pairs to present their conversations.Sample conversation: S1: Did you know that potato chips were invented by mistake? S2: Oh, I did not know that.Who invented them? S1: They were invented by a chef called George Crum.S2: When were they invented?S1: They were invented in 1853.S2: How were they invented?S1: One day Step6 Task: Close TestDid you know that potato chips were invented by m 1 .It says that they were invented by a chef c 2 George Crum in 1853. One day a customer in the restaurant w 3 George worked sent back his plate of fried potatoes b 4 , he said they were cut too thick. George was in a bad mood, so he cut the potatoes really, really t 5 , and he cooked them for a long time u 6 they were c 7 .And he s 8 lots of salt on them so they were really s 9 .He t 10 the customer would hate them.But the customer loved them and a 11 for more.He told other customers about them ,and soon everyone was ordering thinly-sliced, crispy, salty potato chips. In the e 12 ,they became p 13 .And we are still eating them today.Step7 Summary and Homework T: This class we have learnt some words about food taste and the history of potato chips. After class, please retell the interesting story , and search some information about tea.Blackboard Design Unit9 When w