Unit 6 When was it invented Section B 3a～Self Check 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 B-3a-Self Check 课时 1 教学目标 Language Competence: Review vocabulary (website, pioneer, list) and grammar (passive voice in different tenses), practice writing invention introductions. Cultural Awareness: Explore global inventions (e.g., Chinese paper-making) and appreciate their cross-cultural impacts. Thinking Quality: Classify inventions by functions, develop systematic thinking on "invention categories and social values". Learning Ability: Self-check knowledge via exercises, apply creative writing skills to compose invention stories. 重难点 Key: Integrate passive voice with time markers (e.g., "The telephone has been used for over 100 years"). Difficult: Avoid confusion between "invention" (noun) and "invent" (verb); correctly use complex sentences (e.g., "It is believed that...") in writing. 教学环节 学习活动 新课教学 开场与复习（5 分钟） 教师：Good morning, class! How are you today? Before we start our new lesson, let's have a quick review. So far in this unit, we've learned about many important inventions. Can anyone tell me one of the inventions we've talked about and when it was invented? Raise your hands, please. 学生 1：The telephone was invented in 1876. 教师：Great! You're right. Alexander Graham Bell invented the telephone. What about another one? 学生 2：The light bulb was invented by Thomas Edison in 1879. 教师：Exactly! Edison's invention of the light bulb has changed our lives significantly. Now, let me ask you a more challenging question. How do we usually talk about the invention of these things in English? What grammar structure do we use? 学生 3：We use the passive voice. 教师：Very good. Can you give me an example using the passive voice to describe the invention of the light bulb? 学生 3：The light bulb was invented by Thomas Edison. 教师：Perfect! So, we use “be + past participle” to form the passive voice in the past tense when talking about inventions. Now that we've refreshed our memory, let's move on to today's new content, which is also about amazing inventions. 阅读教学（10 分钟） 教师：Look at the screen. Here is a passage from 3a. First, let's skim through the passage quickly to get a general idea. While you're skimming, try to figure out what inventions are mentioned in the text. You have 2 minutes. Start now. （学生快速浏览文章） 教师：Okay, time's up. Who can tell me the inventions mentioned in the passage? 学生 4：The zipper and the tea. 教师：Correct. Now, let's read the passage more carefully. This time, I want you to find out the detailed information about these inventions, such as who invented them, when they were invented, and what they are used for. You can take notes while reading. I'll give you 5 minutes. （学生认真精读文章，做笔记） 教师：All right. Let's stop here. Let's start with the zipper. Who can tell me about the invention of the zipper? 学生 5：The zipper was invented by Whitcomb Judson in 1893. It's used for fastening shoes, clothes, and bags. 教师：Great! You've got all the key points. Now, how about the invention of tea? 学生 6：Tea was invented around 5,000 years ago in China. It was first used for medicine, and later, people found it had a nice smell and began to drink it. 教师：Exactly. Now, let's work in pairs and discuss which of these two inventions you think has had a greater impact on our daily lives and why. You have 3 minutes to discuss. （学生两两讨论） 教师：Time's up. Which pair wants to share your ideas with the class? 学生 7 和学生 8：We think the zipper has had a greater impact because it's used in so many daily items like clothes and bags. It makes our lives more convenient. For example, it's much easier to put on and take off clothes with zippers compared to buttons. 教师：That's a very good point. What about other pairs? Do you have different opinions? 学生 9 和学生 10：We believe tea has had a bigger impact. Tea is not only a drink but also a part of many cultures. It has a long history and is widely consumed around the world. It can bring people together, like in tea ceremonies. 教师：Both of your views are really interesting. In fact, both the zipper and tea have made great contributions to our lives in different ways. 词汇巩固（8 分钟） 教师：Now, let's turn to Self Check 1 on page XX. Here, we have some words in the box: “invent”, “doubt”, “mention”, “website”, “all of a sudden”. Read the passage carefully and fill in the blanks with the correct forms of these words. You can work on your own first. I'll give you 3 minutes. （学生独立完成词汇练习） 教师：Okay, let's check the answers. For the first blank, what should we fill in? 学生 11：mention 教师：Yes, “It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may mention things which are almost the same.” How about the second blank? 学生 12：all of a sudden 教师：Correct. “Some inventions can also lead to other inventions all of a sudden.” Now, let's focus on the word “mention”. Can you give me some more examples using this word? 学生 13：She mentioned that she would go to the party tonight. 教师：Good example. And for “doubt”, can someone use it in a sentence? 学生 14：I don't doubt his ability to finish the task. 教师：Great. Understanding and using these words correctly will help us express ourselves better in both speaking and writing. 写作教学（15 分钟） 教师：Now, it's time for our writing part, which is based on Self Check 2. First, let's think about a topic. We are going to introduce an invention that has a great influence on our lives. You can choose any invention you like, such as the computer, the Internet, or the smartphone. So, what invention do you want to choose? Raise your hands and tell me. 学生 15：I want to write about the computer. 教师：Good choice. The computer has indeed changed the way we live and work. Now, let's list the outline together. First, in the beginning part, we should introduce what the invention is. For example, if you choose the computer, you can start like this: “The computer is one of the most important inventions in modern times.” Then, in the main body, we need to talk about some key points. What are they? 学生 16：We can talk about when it was invented, who invented it, and how it works. 教师：Exactly. And also, we should mention how it has changed our lives. For example, “Since its invention, the computer has made our work more efficient. We can now finish complex tasks in a much shorter time.” Finally, in the ending part, we can make a simple conclusion. For instance, “In conclusion, the computer has become an essential part of our daily lives, and we can't imagine living without it.” Now, based on this outline, start writing your own introduction to the invention you've chosen. You have 10 minutes to write the first draft. I'll walk around and offer help if you need it. （学生开始写作，教师巡视并给予个别指导） 总结与作业布置（2 分钟） 教师：Okay, class. Let's stop here. Today, we've read about some interesting inventions, learned and reviewed some important words, and practiced writing an introduction to an invention. Remember to use the knowledge we've learned today in your future studies. For homework, first, finish your writing. Make sure it's well - organized, with correct grammar and spelling. Second, review all the inventions we've learned in this unit and make a mind - map to summarize the key information about them. I hope you all have a great day. See you next class! 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 $$