Unit 6 When was it invented Section A 2a～2d 教案-2024-2025学年人教版英语九年级全一册

教学设计 课题 Unit 6 When was it invented-Section A-2a-2d 课时 1 教学目标 Language Competence: Grasp listening strategies (identifying key details like invention time/Inventors) and target structures (passive voice with modal verbs "can/must/should be + past participle"). Cultural Awareness: Recognize the cultural significance of inventions (e.g., tea's role in daily life) and their global spread. Thinking Quality: Analyze cause-effect relationships (e.g., how accidents lead to inventions) and logical sequences. Learning Ability: Collaborate in discussions to summarize invention stories and apply listening skills to real-life contexts. 重难点 Key: Master passive voice structures with modal verbs and extract information from listening materials. Difficult: Differentiate between "invent/discover" and connect inventions to historical/cultural contexts. Apply critical thinking to evaluate inventions' impacts while overcoming listening barriers (e.g., rapid speech or accent variations). 教学环节 学习活动 新课教学 一、复习导入（约 3 分钟） T: Good morning/afternoon, class! Before we start today's new lesson, let's have a quick review. Who can tell me some important inventions we talked about last class and when they were invented? （邀请学生回答，回顾电话、汽车、电视、个人电脑等发明及发明时间） S1: The telephone was invented in 1876. T: Very good. What about another one? S2: The car was invented in 1885. T: Right. And do you remember the structure we used to talk about these inventions? S3: It's “was/were + past participle”, like “The telephone was invented in 1876.” T: Excellent. You all remembered well. Now, today we are going to learn more about some other interesting inventions. 二、2a 听力导入（约 5 分钟） T: Look at the pictures in 2a. There are some new inventions here. Can you name them in English? （引导学生说出 zipper, basketball, tea 等词汇） Now, listen carefully. We will hear a conversation about these inventions. While listening, number the inventions in the order you hear them. Are you ready? Here we go. （播放第一遍听力） （听力结束） T: OK, stop. Have you finished numbering? Let's check the answers. （展示答案并请学生核对） Now, listen again. This time, I want you to answer these questions: What are the three inventions mentioned in the conversation? And who were they invented by? Listen carefully. （播放第二遍听力） （听力结束） T: Time's up. Who can tell me the three inventions? S4: They are the zipper, basketball, and tea. T: Great. And who were they invented by? S5: The zipper was invented by Whitcomb Judson. Basketball was invented by James Naismith. And tea was invented by Shen Nong. T: Well done. You listened very carefully. Now, let's learn more details about these inventions. 三、2b 阅读教学（约 10 分钟） T: Open your books to 2b. Read the passage quickly and find out the main idea of each paragraph. Don't worry about the new words for now. Just get the general idea. Start reading. （学生阅读一段时间后） T: OK, time's up. Who can tell me the main idea of the first paragraph? S6: It's about tea, an accidental invention. T: Right. And the second paragraph? S7: It talks about how tea was spread to other countries. T: Correct. What about the third paragraph? S8: It's about the invention of basketball. T: Good job. Now, let's read the passage again carefully. This time, pay attention to the details. Underline the sentences that tell us how these inventions were made or came into being. （学生再次阅读并标注） T: Let's share your underlined sentences. For the invention of tea, which sentence did you underline? S9: “One day, Shen Nong was boiling drinking water over an open fire. Some leaves from a tea plant fell into the water and remained there for some time. It produced a nice smell so he tasted the brown water. It was quite delicious, and so, one of the world's favorite drinks was invented.” T: Very good. This clearly shows how tea was accidentally invented. Now, for basketball, which sentence tells us about its invention? S10: “Basketball was invented by a Canadian doctor named James Naismith, who was born in 1861. When he was a college teacher, he was asked to invent a new game that could be played indoors during the long winters.” T: Great. This explains who invented basketball and why. Now, let's look at some new words in the passage. （讲解新单词和短语，如 accidental, by accident, ruler, boil, remain, smell, trade 等，通过例句帮助学生理解） 四、语言点讲解（约 8 分钟） T: Now, let's focus on some important language points in the passage. Look at this sentence: “Tea was invented by accident.” What does “by accident” mean? （引导学生理解 “偶然地，意外地” 的意思） Yes, it means something happened without being planned. For example, I met my old friend on the street by accident yesterday. Can you make a sentence using “by accident”? （叫几位学生造句） S11: I found a beautiful shell on the beach by accident. T: Excellent. Another language point. “It is said that...” In the passage, we have “It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink.” This structure “It is said that...” means people say that... It's a common way to introduce some information that is widely believed but may not be proven. Can you give me an example using this structure? S12: It is said that there is a monster in the lake. T: Good try. Now, let's look at the passive voice used in these sentences. We already know the structure “was/were + past participle”. But here, pay attention to the preposition “by” when we want to mention the doer of the action. For example, “Tea was invented by Shen Nong.” “Basketball was invented by James Naismith.” This shows who carried out the action of inventing. Let's practice using this structure. I will give you some topics, and you make sentences in the passive voice. Topic 1: The light bulb. S13: The light bulb was invented by Thomas Edison. T: Great. Topic 2: The first airplane. S14: The first airplane was invented by the Wright brothers. T: Well done. 五、2c 口语练习（约 10 分钟） T: Now, let's do some pair work. Look at the information in 2b. Student A, you are a reporter. Student B, you are an expert on inventions. The reporter (Student A) asks the expert (Student B) questions about the inventions in 2b, such as how they were invented, when they were invented, and who invented them. Then change roles. Use the information in the passage to help you. Let's start. （学生开始进行对话练习，老师巡视并给予指导） （一段时间后） T: OK, stop here. Let's invite some pairs to come to the front and show us their conversations. Which pair wants to be the first? （邀请几组学生进行展示） Pair 1: A: Hi, I'm a reporter. Can you tell me something about the invention of tea? B: Sure. Tea was invented by accident. It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink. A: When was it invented? B: It was invented about 5,000 years ago. A: Thank you very much. B: You're welcome. T: Very good. Your pronunciation is clear and you used the information correctly. Another pair? Pair 2: A: Hello, I'm a reporter. Can you tell me about the invention of basketball? B: Yes. Basketball was invented by a Canadian doctor named James Naismith in 1891. He was asked to invent a new game that could be played indoors during the long winters. A: How was it invented? B: He divided his class into two teams and taught them to play his new game. A: Thanks a lot. B: No problem. T: Well done. You both did an excellent job. Now, think about some other inventions you know. Make up conversations with your partner about them. 六、2d 对话教学（约 10 分钟） T: Now, let's move on to 2d. First, listen to the conversation between Paul and Roy. While listening, think about what the main topic is. （播放对话录音） （听力结束） T: What is the main topic of their conversation? S15: They are talking about the zipper, an invention for the school project. T: Right. Now, read the conversation by yourselves and try to understand the details. Pay attention to the new words and expressions, like “project”, “mention”, “at that time”, etc. （学生自主阅读对话） T: Let's explain some new words and expressions. “Project” here means a piece of planned work or activity. For example, we have a school project to do. “Mention” means to talk about something briefly without going into details. For example, He mentioned that he had a meeting yesterday. “At that time” refers to a particular moment in the past. Can you make sentences using these words and expressions? （叫几位学生造句） S16: We are working on a science project about plants. T: Good. Another one. S17: She mentioned her trip to Beijing in her speech. T: Great. Now, let's read the conversation together, sentence by sentence. Pay attention to the pronunciation and intonation. （师生一起逐句朗读对话） 七、小组讨论与展示（约 10 分钟） T: Now, I want you to work in groups. Discuss this question: What other small inventions do you think have changed the world? Each group chooses one invention and makes a short presentation about it. You can talk about what it is, how it was invented, who invented it (if you know), and how it has changed our lives. You have 5 minutes to prepare. （学生分组讨论并准备） （一段时间后） T: OK, time's up. Which group wants to start the presentation? （邀请小组进行展示） Group 1: S18: Our group chose the invention of the ballpoint pen. The ballpoint pen was invented by Laszlo Biro. It was invented in the 1940s. Before the ballpoint pen, people used fountain pens which were messy and needed to be filled with ink often. The ballpoint pen is much more convenient. It has a small ball at the tip that rolls and distributes the ink smoothly. It has changed the way we write. We can write more quickly and neatly with it. It is widely used in schools, offices, and in our daily lives. T: Very good. You provided a lot of useful information. Another group? Group 2: S19: We talked about the Post-it note. It was invented by accident. A scientist at 3M, Spencer Silver, was trying to develop a super-strong adhesive but instead created a weak, reusable one. Another 3M employee, Art Fry, had the idea of using this adhesive to make bookmarks that could stick to pages without damaging them. Post-it notes are now used everywhere. We use them to leave messages, mark pages in books, and for many other purposes. They have made our lives more organized and convenient. T: Excellent job, everyone. You all did a great job in discussing and presenting. 八、课堂总结（约 2 分钟） T: Today, we learned about some interesting inventions, such as tea, basketball, and the zipper. We also learned how to use language to talk about inventions, like the structure of the passive voice and some useful expressions. Remember, inventions have changed our lives in many ways. I hope you can keep an eye on new inventions and use English to talk about them. Next class, we will continue to explore more about inventions. 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$