Unit5 section A 3a-3d 公开课课件2026-2027学年人教版九年级英语上册

Unit 5 Power of Ideas Section A 3a-3d Learning Objectives 1. Learn about the inventor of the radio, the time of its invention, and its influence on the spread of information and music. 2. Talk about an invention with simple sentences. 3. Discuss the radio technology we still use today. Lead-in What is the invention? It’s the mobile phone. When was it invented? It was invented in 1973 Who was the inventor? It was invented by Martin Cooper What changes can it bring to us? We can communicate(交流) with others _______. The world is made much _______ by the smart phone. smaller easily Lead-in Lead-in Pre-speaking Do you know who he is? maybe he has something to do with radio. While-speaking 1. What does Peter think is the most useful invention of all time? Peter thinks that radio is the most useful invention of all time. After watching the video, let’s read the dialogue together to learn more about him. While-speaking 2. What does [radio] refer to here? A. B. Wireless Telegraph Radio Early radio sent messages by radio waves using Morse code Later radio a receiver for sound played music and news, people called it a radio Radio can mean both the early technology and the later receiver knowledge-extending What is the difference? Invention: ________ Who was the inventor? ____________________ When was it invented? ____________________ How did it change the world? ____________________ ____________________ ____________________ While-speaking 3b Read and complete the chart. Radio Let’s read it carefully and find out the answers. Fu Xing: What do you think is the most useful invention of all time, Peter? Peter: It has to be the radio. Fu Xing: The radio? Why? Peter: Before the radio was invented, information travelled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. Fu Xing: Right. Who was the inventor? Peter: An Italian inventor called Guglielmo Marconi. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Fu Xing: Wow! That was quite a distance at that time. Peter: Yeah. And because of the radio, some other important inventions were developed as well. Fu Xing: Like the television? Peter: That's right. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. Who’s the inventor? While-speaking When was it invented? How did it change the world? ① The world was made ___________. ② News could be spread _______________ in seconds. ③ It also _____________ on music. The radio made it much easier for people to __________. much smaller around the world had a big effect enjoy music Listen to the conversation. Pay attention to how the key information is stressed. Then role-play the conversation. Post-speaking Fu Xing: What do you think is the most useful invention of all time, Peter? Peter: It has to be the radio. Fu Xing: The radio? Why? Peter: Before the radio was invented, information travelled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. Fu Xing: Right. Who was the inventor? Peter: An Italian inventor called Guglielmo Marconi. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Fu Xing: Wow! That was quite a distance at that time. Peter: Yeah. And because of the radio, some other important inventions were developed as well. Fu Xing: Like the television? Peter: That's right. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. What do you think…? 你认为…怎么样？ I think… 我认为… When was…invented? ……是什么时候发明的？ It was invented in… 它是在……发明的。 Who was the inventor? 是谁发明的？ It was invented by… 它是被……发明的。 It had a big effect on… 对……有巨大影响 It change the world because… 它因……而改变世界 3c Pair-work 3d Choose another invention you think is the most important and make a mind map about it. Then describe it to a partner. I think ... is the most useful invention. It was invented by ... It was invented in ... It changed the world because ... Question Answer What Who When How Invention: ________ Who was the inventor? ____________________________________ When was it invented? ____________________________________ How did it change the world? ___________________________________ ___________________________________ ___________________________________ Summary Guglielmo Marconi. It was developed in the 1890s; the first radio message across the Atlantic Ocean in 1901. ① The world was made much smaller. ② News could be spread around the world in seconds. ③ It also had a big effect on music. The radio made it much easier for people to enjoy music. Radio Further thinking When do you use a radio in your daily life? We use radio technology every day when we use mobile phones or Wi-Fi. Further thinking What other influence do you think the radio has on your world today? Mobile phones use radio to send messages to each other. Radio helps drivers find their way and get road information. Radio helps local farmers know the weather today. Radio can also help people call for help. Many modern technologies are based on the invention of radio, so it is one of the most useful inventions. Homework Choose to do Use your words to retell the dialogue of 3a. Thank you for your listening Must do Suppose you are Fu Xing or Peter. Continue to talk about another invention. Prepare at least 4 turns of dialogue with your partner. Self - evaluation Peer assessment Teacher assessment Pronunciation and Intonation Fluency流利度 Grammar and Vocabulary Accuracy准确性 Expression and Creativity null 81841.805 $