Unit2 Great ideas Listening 课件 2026-2027学年沪教版英语九年级上册

该初中英语课件围绕“富兰克林的风筝实验及避雷针发明”展开，通过生活中避雷针的图片导入，结合预听思考、听中问答与填空任务，构建从现象观察到原理探究再到应用理解的学习支架，衔接词汇学习与听力技能训练。 其亮点在于以听力为核心融合语言能力与思维品质培养，利用音频材料和问题链引导学生分析实验工具、目的及结果，讨论“想法来源”环节提升批判性思维。任务型教学法结合词汇拓展，助力学生提升听力理解与表达能力，为教师提供结构化教学资源，提高课堂效率。

Unit 2 Great ideas Key question How do great ideas change the world? 主题范畴：人与社会 主题群：历史、社会与文化；科学与技术 子主题：对世界、国家、人民和社会进步有突出贡献的人物。 (1) know about Benjamin Franklin and his famous kite experiment on lightning. (2) master key words and understand how the lightning rod was invented. (3) improve listening skills to get key information and finish related exercises. Learning objectives 学习目标 After learning, I will be able to: New words and phrases 1. *wire /ˈwaɪə(r)/ n. 金属丝；电线 p.24 2. prove /pruːv/ v. 证明；证实 p.24 3. lightning rod 避雷针 p.24 Lead-in Look at the pictures In rainy thunderstorms, lightning may hit buildings and cause fires. But many tall buildings are safe now. Do you know what protects them? lightning rod Where can we see lightning rods? (on the top, tall buildings, houses, towers.) What are the lightning rods made of? (metal / copper or iron) What’s the use of lightning rods? (protect buildings from lightning) Let’s discuss Work in groups and talk about the following questions. Do you know who invented the lightning rod? How was it invented? Tips: Study the questions and notes before you listen. Mark some key words. Predict possible answers. What do great ideas bring about? Think 伟大的想法能带来什么？ Pre-listening A brilliant idea You may see lightning rods in different places. But do you know how lightning rods were invented? Look at the picture below and discuss the experiment in pairs. P24 Look and discuss 丝绸风筝 金属丝 /ˈhemp strɪŋ/ 麻绳 金属钥匙 丝线 Look at the picture and think: ① What did Franklin use for the experiment？ ② What did he want to prove with the experiment? ① A silk kite, a metal wire, a hemp string, a metal key and a silk string. ②He wanted to prove that lightning was a kind of electricity. Listen to the story and answer the questions below. While-listening P24 Listen and answer (1) Who was Benjamin Franklin? (2) According to the speaker, what helped Benjamin Franklin solve different problems? (1) Who was Benjamin Franklin? (2) According to the speaker, what helped Benjamin Franklin solve different problems? He was an American scientist and inventor in the 18th century. What helped him was that he was always very curious about the world. / His curiosity. Listen again and fill in the blanks. Listen and fill P24 hit buildings fly a kite during lightning was electricity Lightning rods save buildings from being destroyed by fire invented the lightning rod a thunderstorm Discuss and share P24 Discuss the question below. How did Benjamin Franklin come up with such a brilliant idea? He was curious about nature. He saw lightning damaged buildings. He loved science and observed nature carefully. He thought hard, then came up with the experiment idea. He dared to do experiments to find the truth. ... Some possible points Tape script Post-listening Benjamin Franklin was an American scientist and inventor in the 18th century. He was always very curious about the world, and this often helped him solve different problems. Back in those days, lightning often hit buildings during thunderstorms. There were many terrible fires, and the worst fires could burn whole towns to the ground. Franklin wanted to prevent such things. He believed that lightning was actually electricity, so he decided to fly a kite during a thunderstorm to see if he was right. He made a silk kite with a metal wire on top. Then he attached a hemp string to the bottom part of the kite. When the hemp string got wet, it could conduct electricity. Franklin also attached a metal key and a silk string to the hemp string. One day in June 1752, a thunderstorm was coming in, so Franklin and his son went out with the kite. They flew it high in the sky. Then they walked inside a farm building. However, they left the door open so the kite could continue flying. That way, they kept the silk string dry. This was very important — they didn't want to get hit by lightning. Franklin was pulling on the string anxiously when lightning flashed near the kite. He put his hand close to the key and felt an electric shock. "I've been shocked! Success! Success!" he shouted to his son. Franklin's experiment was very dangerous. No one should ever try it today. In fact, Franklin was lucky that the kite wasn't hit by lightning. It would have killed him. However, it did lead to one of Franklin's inventions — the lightning rod. In Franklin's day, lightning rods saved buildings from being destroyed by fire. They continue to protect buildings today. 1. wire /ˈwaɪə(r)/ n. 金属丝；电线 如：这根细电线连接电灯和电源。 This thin wire connects the lamp to the power. 【拓展】 wire v. 接线；布线→ wire a house 给房子布线 wireless adj. 无线的 → wireless WiFi 无线网络 2. prove /pruːv/ v. 证明；证实 ① prove＋n. 证明某事 如：他想要在比赛中证明自己的能力。 He wants to prove his ability in the competition. ② prove to be + adj. / n. 事实证明；原来是 如：这项任务比我们预想的更难。 The task proved to be more difficult than we thought. 如：这张照片证明他当天在现场。 The photo proves that he was at the scene that day. ③ prove + that从句 注意：其过去式 / 过去分词：‌ prove 的过去式是 proved‌，‌ 过去分词通常是 proven，也可以写成 proved。‌ 3. lightning rod 避雷针 如：高层建筑需要避雷针来保障安全。 A tall building needs a lightning rod to keep safe. 【拓展】 lightning adj. 闪电般的→lightning speed 闪电般的速度 Finish the exercises in EW (English Weekly). Recite the four key answers about Franklin’s kite experiment. Preview Grammar on P25-P26. Thank you! 25 2298.7756 2298.7756 3709.3938 147520.05 148303.8 27846.7 35004.246 49083.516 31033.71 $