When was it invented 教学 目标知识与技能：1. 能掌握以下单词和短语：crispy, salty, sour, by mistake, customer2. 提高听说能力。过程与方法：By listening and speaking, students can improve their ability to communicate with others in English.情感态度价值观: 了解世界上一些对人类有着重大意义的发明的相关信息，开阔学生的眼界教学方法兴趣活动教学策略，充分调动学生的积极性。学习方法Individual learning method, Cooperative learning method教学准备Sound recorder, tape, textbook, PPT教 学 过 程设计意图Step 1 GreetingsGreet the students as usual.Step 2 Warming up1. Let students watch an interesting picture. 2. Ask some questions about them. 1)What did they eat? S1: Ice cream. 2)What did the big dog think of the ice-cream? S2: Sweet, cool, and delicious! Well lets look at some other delicious food, please. Step 3 TalkingWork on 1a 1. Tell students 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. Students work with their partners and try to write some proper words under the pictures. 3. Let some students read their answers. Try to remember the new words. Work on 1b 1. Let some students read the adjective words in the box. Make sure they all know the meaning of each word. 2. Students discuss with their partners. Try to write the name of a different food after each word.Learn the new words together.Step 4 Listening Work on 1c 1. Tell students the conversation is about how the potato chips were invented. The story is very interesting. 2. First, let one students 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. 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 customer was happy in the end. 3. Play the recording for the students. Listen for the first time. Play the recording again and judge T or F. Keys: 1. T, 2. F, 3. T, 4. F, 5. F, 6. T4. Listen and answer the questions. 1）Who invented potato chips? 2）When were they invented?3）What did the customer order at the restaurant?4）What did the customer think of the potato chips George cooked at first? 5）How did George cook the potatoes then?Work on 1d1. Let students read the article in 1d first. Tell students to listen again and fill in the blanks with the right words. 2. Play the recording again for the students 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 Crum 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 saltyPair work 1. Work in pairs. Make a conversation about the invention of potato chips. Use the information in 1c and 1d. 2. Ask some pairs to act out their conversations in front of the class. Step 5 DiscussionShow some pictures of playing basketball. Ask students some questions about basketball games. Discuss the sport with your partner and share your ideas with the class.e.g. T: Do you like basketball? (Whats your favorite sport?) S1: Sure. I like it very much. T: Do you watch basketball games?S2: Yes. I like to watch the NBA and CBA. T: Do you know the history of basketball game? Step 6 HomeworkMake conversations with friends in English.Make students be interested in and get involved in the topic of this class.By speaking and listening, students speaking and listening abilities can be improved.板书设计Unit 6: When was it invented? Section B:1a-1eNew words: crispy, salty, sour, by mistake, customer 教后反思4