Unit5 Power of Ideas SectionA(2a-2d)课件 2026-2027学年人教版英语九年级上册

What changes can inventions bring to our lives? Unit 5 Power of Ideas Section A (2a-2d) What’s the invention in the video? Let’s watch =Three Dimensional (三维) What do you want to know about the 3D printer? 3D printer /ˈprɪntə（r）/ 打印机 What is a 3D printer? Which country is the first 3D printer made in? What is it used for /what can it do? It is a special printer that can make real objects. The first 3D printer was invented in USA in 1983. Some basic information about 3D printer How does it work? What can the 3D printer make? Presentation Watch and answer Presentation 1.What is a 3D printer used for? 2.How does it work? First, you draw the thing you want to make on a computer. Then the computer creates a special kind of file and sends it to the 3D printer. Finally, the 3D printer reads that file and prints the object layer by layer. 3.What things can a 3D printer make? It is used for making things. Watch and answer Presentation Tick the things that you think a 3D printer can make. You can add more. 2a □ medicine □ arms and legs □ hearts □ toys □ chairs □ tables □ shoes □ computers □ houses □ food □ _________________________ I think ... can be made by a 3D printer. In my opinion, ....can also be produced by it. I don’t think ...can be made by a 3D printer. clothes, cups, cars ... In fact, almost everything can be made by 3D printer. Tick and add Presentation Listen to the conversation and choose right answe. 2b 1.Where did Han Lin go last weekend? A. To a science museum. B. To the International Exhibition of Inventions. C. To a 3D printing shop. 2. Why was the 3D printer Han Lin’s favourite invention? A. Because almost everything under the sun can be made by it. B. Because it can make all kinds of paintings. C. Because it was cheap and easy to use. 天底下，世间 Listen and choose Presentation What things can be made by the 3D printer? All kinds of ________________.______,______ , _______, and even _______can all be made by the 3D printer. 日常用品 And in________for example,______________ , and even______ can be created by the 3D printer. 医学 It can even make________. chairs everyday objects Toys tables houses medicine arms and legs hearts food Listen and fill How does the 3D printer work? Complete the sentences with the correct forms of the words in the box. Then listen again and check your answers . read design produce create send 读（盘） 设计 制造 创建 发送 2c Listen and complete First, the object is ________ on the computer. 1 Then, a file is _______ by the computer. 2 And the file is ________ to the 3D printer. 3 Next, the file is _______ by the 3D printer. 4 Finally, the object is _________ by building up plastic. 5 designed created sent read produced Ella: Hi, Han Lin! Did you go to the International Exhibition of Inventions last weekend? Han Lin: Yes, some amazing inventions were shown from all over the world. Ella: What invention did you like the most? Han Lin: Oh, the 3D printer was amazing. Ella: Why? Han Lin: Almost everything under the sun can be made by it. Ella: Really? Like what? Han Lin: Well, all kinds of everyday objects. Toys, chairs, tables, and even houses can all be made by the 3D printer. Ella: That’s cool! Listen again and repeat , then find the Passive Voice. 被动语态: be done 全世界 各种各样的 日常物品 Han Lin: Yeah. And in medicine for example, arms and legs, even hearts can be created by the 3D printer. Ella: That’s great! How does it work? Han Lin: Well, first, the object is designed on a computer. Then, a file is created and sent to the 3D printer. The 3D printer reads the file, and after that, the object is produced by building up plastic. Ella: Is only plastic used? Han Lin: No, other material can also be used to produce things. It can even make food. Ella: Oh, really? I’d love to try 3D-printed food! Listen again and repeat , then find the Passive Voice. 被动语态: be done 堆积，堆叠 Hi, Han Lin! Did you go to the International Exhibition of Inventions last weekend? Yes, some amazing inventions were shown from all over the world. What invention did you like the most? Oh, the 3D printer was amazing. Why? Almost everything under the sun can be made by it. Ella: Han Lin： Ella: Han Lin: Ella: Han Lin: 询问周末是否去了发明展，引出 “inventions” 主题，交代背景 询问对方最喜欢的发明是什么，核心对象聚焦 通过追问喜欢的原因进一步深入话题。 Read and analyze Really? Like what? Well, all kinds of everyday objects. Toys, chairs, tables, and even houses can all be made by the 3D printer. That’s cool! Yeah. And in medicine, for example, arms and legs, and even hearts can be created by the 3D printer. Ella: Han Lin: Ella: Han Lin: 追问具体例子，引出日常和医疗用途 That’s great! How does it work? Well, first, the object is designed on a computer. Then, a file is created and sent to the 3D printer. The 3D printer reads the file, and after that, the object is produced by building up plastic. Is only plastic used? No, other materials can also be used to produce things. It can even make food. Oh, really? I’d love to try 3D-printed food! Ella: Han Lin: Ella: Han Lin: Ella: 追问原理，引出工作流程 补充追问材料，完善认知 Presentation What invention do you like the most? There are so many great inventions in our daily lives. List the things you use every day and choose one that is the most. Then talk about what it can be used for and its importance. 2d A: What invention do you like the most? B: I like.... the most. A: What can it be used for? B: It can be used for /to ...... A: Amazing!/Fantastic! Is it important in your daily life? B: Yes, it is. ..... Things I use every day I.laptop 2.pencil 3.desk 4.______ Pairwork A: What invention do you like the most? B: I like _____________ the most. A: What can it be used for? B: It can be used for_______________________________ _______________________________________________ A: Amazing! Is it important in your daily life? B: Yes, it is. It ________________________________________. smartphones communicating with friends, taking photos, surfing the Internet and so on. makes our life more convenient 方便的 Pairwork 1. Why was the 3D printer Han Lin’s favourite invention? printer /ˈprɪntə（r）/ 〔名词〕 由“print（v. 打印）+-er（名词后缀）”构成 (1)打印机 Could you please show me how to use the 3D printer? 请问你能教我如何使用这台3D打印机吗？ (2)印刷公司；印刷工人；印刷商 Helen has been a printer in that printer for five years. 海伦在那家印刷厂做印刷工已经五年了。 拓展：print〔名词〕印刷品 〔动词〕打印 Language points Presentation 2.Finally, the object is produced by building up plastic. 最后，物体通过堆叠塑料的方式被生产出来。 ① produce /prəˈdjuːs/ [及物动词]生产；繁育;制作，拍摄;[不可数名词] 产品；（尤指）农产品 This factory produces bikes. Scientists did a lot of research to help pandas produce more babies. How many films has the famous director produced so far? Hundreds of people prefer to buy farm produce online. ② product n. 产品；制品[可数名词]production n. 生产；产量 The 3D printer can make many products. The factory increased its production. Presentation Presentation At the International Exhibition of Inventions, two great inventions are introduced to visitors. The first one is Super See from Germany. It looks like a pair of sunglasses. It 1.________ (make) for people with poor eyesight. A mini-camera 2.______________ (connect) to its front. Words on books can 3.__________ (turn) into sound, so it helps users read and watch TV easily. The second invention is Smart Cook 4 China. People need to put food into the machine and press the button first. After that, the food 4._________ (cut) and fried by the machine. Oil and salt 5.__________ (add) automatically. There are many recipes in its app, 6._____ it can cook hundreds of dishes. Besides these two inventions, the 3D printer is also popular. Different daily objects 7._____________ (produce) with plastic or other materials. Many medical parts can be made, 8.__________ (include) man-made hearts. Creative ideas can always change our life 9.______ a better way. is made is connected be turned are added is cut so are produced including in Class test Presentation Lavf58.46.101 Other 82651.68 null 96680.805 $