Unit 5Power of Ideas（Section A 3a-3d）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 (3a-3d) What do you think is the most useful invention? I think... is the most useful invention because... Discuss and share I think the mobile phone is the most useful. We can use it to call others and take photos. 3a Do you know this machine? What is it? What do people use it for? Look at the picture and make a prediction. Pre-reading What do you think is the most useful invention of all time, Peter? It has to be the radio. The radio? Why? 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: Peter: Fu Xing: Peter: Right. Who was the inventor? An Italian inventor called Guglielmo Marconil. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Wow! That was quite a distance at that time. Yeah. And because of the radio, some other important inventions were developed as well. Like the television? 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. Fu Xing: Peter: Fu Xing: Peter: Fu Xing: Peter: Read the conversation. What does Peter think is the most useful invention of all time? 有史以来；自古以来 What does “radio” refer to here? VS Skimming Presentation Presentation Wireless Telegraph Radio Early radio sent messages by radio waves ,using Morse code Later radio is a receiver for sound. It plays music and news . Radio can mean both the early technology and the later receiver Look and learn Scan and answer 1. What was it like before the radio was invented? Information travelled very slowly. The world felt “big” and disconnected. What do you think is the most useful invention of all time, Peter? It has to be the radio. The radio? Why? 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: Peter: Fu Xing: Peter: 2. Why does Peter think the radio is the most useful invention of all time? 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. Peter: Yeah. And because of the radio, some other important inventions were developed as well. Like the television? 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. Peter: Fu Xing: Peter: Reason 1 Reason 2 Reason 3 Further thinking: What other inventions were developed because of radio? 3. Who developed the radio? An Italian inventor called Guglielmo Marconi. Right. Who was the inventor? 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. Wow! That was quite a distance at that time. Fu Xing: Peter: Fu Xing: 古列尔莫・马可尼 教育背景：出生于博洛尼亚市，毕业于博洛尼亚大学 重要发明与成就： 1895 年：在家庭实验室完成首次无线电通信实验，传输距离达 2.4 公里。 1897 年：在伦敦创立马可尼无线电报公司，推动无线电技术的商业化应用。 1900 年：获得调谐式无线电报专利，大幅提升无线电通信效率。 1901 年：实现跨大西洋无线电信号传输，是无线电通信史上的里程碑事件。 1902 年：改进磁检波器，提升了无线电通信的稳定性。 荣誉与贡献 1909 年：与布劳恩共同获得诺贝尔物理学奖。 其无线电报技术被广泛应用于航海安全通信，曾在 1909 年汽船事故救援中发挥关键作用，挽救了大量生命。 Guglielmo Marconi 1874.4.25－1937.7.20 意大利无线电工程师、企业家，实用无线电报系统创始人，被称为 “无线电之父”。 教师可以根据实际情况介绍。 9 4. How did he invent the radio? In the 1890s, he developed the idea(of wireless telegraph system). In 1901, he sent a radio message across the Atlantic Ocean for the first time. Right. Who was the inventor? 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. Wow! That was quite a distance at that time. Fu Xing: Peter: Fu Xing: Read again and complete the chart. 3b Invention: _________ Who was the inventor? ____________________ When was it invented? ____________________ How did it change the world? the radio Guglielmo Marconi (Italian) In 1890s. News could be spread around the world in seconds by radio. ___________________________ ___________________________ It also helped develop other important inventions like the television. ___________________________ It had a big effect on music, making it easier for people to enjoy music from artists around the world. 提出话题 解释原因 介绍发明者、发展史 从通信、科技延伸到文化生活，完整总结无线电的多重影响，自然收尾。 Read and analyze How to talk about an invention? What + Who + When + How (effect) Choose another invention you think is the most important and make a mind map about it. Then describe it to a partner. 3d I think ... is the most useful invention. It was invented by ... It was invented in ... It changed the world because ... What + Who + When + How (effect) Invention: _________ Who was the inventor? ____________________ When was it invented? ____________________ How did it change the world? ___________________________ the telephone Sample: Alexander Bell. In 1876. It made communication much faster and easier. The telephone was invented by Alexander Bell in 1876. The telephone changed the world a lot. It made communication much faster and easier. In the past, people had to send letters, which took a long time. But with the telephone, they could talk to each other at once, even if they were far away. The telephone brought people closer and made the world feel smaller. Presentation Presentation Must do: 1.Copy the key words and passive sentence patterns of this lesson, finish the exercises in Grammar Focus. 2.Try to recite the dialogue between Fu Xing and Peter . Choose to do: Write a short passage (about 80 words) to introduce the most important invention in your mind. You need to use at least two passive voices in the article. $