Unit 5 Section B (2a-4d) 教学设计 2026-2027学年英语人教版九年级上册

该初中英语教学设计围绕“小发明改变世界”主题，聚焦9个新词、词形变化及be looking to do sth等表达，通过情景导入激活背景，新词学习结合词缀构词法，再经词形练习、短语填空、阅读信息提取至写作，构建递进式学习支架。 特色在于主题情境与核心素养融合，以便利贴、飞机发明故事为载体，阅读分析挑战与解决培养逻辑思维（思维品质），项目活动小组协作制作海报提升合作探究能力（学习能力），助力学生综合运用语言，为教师提供结构化教学流程与多样化活动设计。

AI 生成 Unit 5 Power of Ideas — Section B (2a-4d) 一、教材分析 本课为人教版(2024)九年级上册Unit 5 Section B(2a-4d),围绕“小发明改变世界”主题展开。通过sticky notes和飞机发明的故事,训练词形变化、短语填空、阅读理解和写作能力,培养创新思维。 二、学情分析 九年级学生已掌握一定的词汇和阅读策略,但对词形变化和发明类话题的深度表达仍有困难。学生对项目活动兴趣浓厚,但小组协作和海报制作能力需进一步引导。 三、核心素养目标 1. 语言能力:掌握9个新词及be looking to do sth、come up with sth等表达,能运用被动语态谈论发明。 2. 思维品质:通过阅读飞机发明故事,分析发明过程中的挑战与解决思路,培养逻辑思维。 3. 文化意识:了解中外发明家的创新精神,增强文化自信与科技报国意识。 4. 学习能力:通过项目活动完成发明海报制作,提升合作探究与展示能力。 四、教学重难点 重点:掌握9个新词的音形义,理解2c阅读文本并提取关键信息。 难点:运用be looking to do sth和come up with sth进行准确表达,完成发明主题写作与海报制作。 五、教学过程 Step 1 情景导入 【教师活动】展示图片,提出核心问题:How small ideas turn into world-changing inventions? 引导学生思考小发明如何改变世界,激活背景知识。 【学生活动】观察图片,思考并讨论小发明改变世界的实例,如便利贴、飞机等,分享自己的想法。 情景导入:小发明改变世界 【过渡语】同学们的想法都很棒!接下来我们学习本课的新词,为深入理解课文做好准备。 Step 2 新词学习 【教师活动】呈现本课9个新词,带领学生朗读并讲解词性、音标和中文释义,强调易错发音。 1. rapidly / r p dli/ adv. 迅速地;快速地 2. afford / f d/ v. 买得起;能做 3. company / k mp ni/ n. 公司;剧团 4. sticky / st ki/ adj. 黏(性)的;闷热的 5. songbook / s b k/ n. 歌曲集 6. production /pr d k n/ n. 生产;制作 7. gradually / r d u li/ adv. 逐渐地;逐步地 8. widely / wa dli/ adv. 广泛地;普遍地 9. glider / la d (r)/ n. 滑翔机 【教师活动】讲解词缀构词规律:rapid(adj.)+ ly rapidly(adv.);produce(v.)+ tion production(n.);wide(adj.)+ ly widely(adv.),帮助学生理解词形变化。 【学生活动】跟读新词,注意发音准确,同桌互读互纠,尝试用新词造简单句子。 【易错提示】发音辨析 rapidly中/dli/发音不要漏掉/d/;gradually的/gr d u li/注意/d /的发音;glider的/gl/辅音连缀要连贯。 【知识点】词缀构词法:rapid + ly rapidly;produce + tion production;wide + ly widely。掌握构词规律有助于快速记忆和辨析词形。 【过渡语】新词学习完毕,接下来通过2a练习巩固词形变化。 Step 3 2a 词形变化与选词填空 【教师活动】引导学生观察2a词形变化表格,讲解collect/create/invent/produce四组词的名词、动词、形容词形式转换规律。 Complete the table with different forms of the words. Noun Verb Adjective collection collect collective creation create creative invention invent inventive product produce productive Choose the correct word to complete each sentence. 1. The use of modern medicine has helped control / spread many dangerous diseases. 2. News could travel much more rapidly / slowly with inventions like the radio and the television. 3. Fibre made from oil provides a(n) cheap / expensive solution to the problem that many people cannot afford to buy enough clothes. 4. A film was invented / produced by a film company to tell us about what robots could do for people's lives in the future. 5. In January 1911, Feng Ru carried out a secret / public test flight in Oakland City. He showed the world what Chinese people could achieve. 【教师活动】核对答案,讲解易错题。第3题cheap与expensive的辨析要结合“cannot afford”的语境;第5题secret与public的判断依据后文“showed the world”的转折关系。 【学生活动】独立完成词形变化表格和选词填空练习,完成后同桌核对答案,圈出不确定的选项。(参考答案:1. control 2. rapidly 3. cheap 4. produced 5. secret) 【解题口诀】选词填空技巧 先通读全句理解语境,再根据上下文逻辑判断词义方向(正向/负向),最后排除不符合语义的选项。 【过渡语】词形和选词练习完成,接下来进入2b短语填空,了解便利贴的发明故事。 Step 4 2b 短语填空 【教师活动】讲解2b任务要求:用方框中短语的正确形式填空,并讨论便利贴发明故事。呈现备选短语。 短语:piece of stand up result in to sb's surprise Did you know that an accident led to the invention of sticky notes? In 1968, a scientist named Spencer Silver was trying to make a strong glue. _, he produced a glue that was really weak. It could stick things, but it could be removed very easily. The glue was interesting, but no one could find a use for it. Then, in 1974, a man named Arthur Fry was trying to mark the pages in a songbook using small _ paper. However, whenever he _ to sing, the pieces fell to the floor. Then he remembered Silver's glue. With the glue, the paper stayed in the songbook, but it could later be removed. Fry's idea _ the production of sticky notes of many sizes and colours. They gradually became popular and now are widely used all over the world. 【学生活动】阅读短文,根据上下文选择正确短语并用适当形式填空,讨论便利贴从“意外”到“实用”的转变过程。(参考答案:To his surprise; pieces of; stood up; resulted in) 【过渡语】便利贴的故事告诉我们发明源于生活。接下来阅读飞机发明的故事,学习如何从文本中提取信息。 Step 5 2c 阅读理解与信息提取 【教师活动】指导学生阅读2c文本,分段提取关键信息,完成图表。引导学生关注发明过程中的挑战与解决方式。 Paragraph 1: The invention of the plane has greatly changed the world. However, it seems that its inventors, Orville Wright and Wilbur Wright, were not looking to change the world at all. Rather, they just wanted to fly like birds. Paragraph 2: To solve the problem of heavier-than-air flight, the Wright brothers began working with gliders. There were two main challenges. The first was how to get the glider into the air. The second was how to control it once it was flying. For both problems, they found their solutions by looking at how birds flew. After they solved these problems, they added an engine to the glider. Then, in December 1903, the world's first plane flights were made. Paragraph 3: The invention of the plane has made our travels around the world much easier and faster. Journeys that once took days, weeks, or even months, can now be made in only a few hours. As a result, communication among people in different countries is now much easier, and the world has become a much smaller place. 2c 阅读文本 根据各段内容提取信息: Paragraph 1 信息提取: 问题 信息 What was invented? The plane Who were the inventors? Orville Wright and Wilbur Wright Why was it invented? They just wanted to fly like birds. Paragraph 2 信息提取: 问题 信息 What challenges were met? How to get the glider into the air; how to control it once it was flying. How was it invented? By looking at how birds flew; then added an engine to the glider. When was it invented? In December 1903. Paragraph 3 信息提取: 问题 信息 What was its effect? Travel became easier and faster; the world became a much smaller place. 【教师活动】引导学生完成三段信息提取图表,讲解被动语态在描述发明时的运用,如“the world's first plane flights were made”。 【学生活动】阅读三段文本,完成信息提取图表,小组讨论飞机发明的意义,用被动语态复述发明过程。 【理解要点】阅读策略 信息提取题先找准段落主题句,再根据图表中的疑问词(What/Who/Why/How/When)定位原文关键句,最后精简概括填入图表。 【过渡语】阅读理解完成,接下来进入3a-3b写作环节,学习如何研究一项发明并撰写短文。 Step 6 3a-3b 发明研究与写作 【教师活动】指导学生选择一项感兴趣的发明进行研究,完成3a研究笔记,以电话发明为例示范。 3a Choose a great invention you are interested in. Do some research and make notes about it. 示例(电话发明): The telephone was invented by Bell in 1876. • It was invented because people wanted a faster and more convenient way to communicate over long distances. • It was made of / from metal and plastic. • The inventor had difficulties in testing and improving the sound transmission. • The invention was responsible for / led to the rapid development of global communication. 3b Write about the invention you have chosen using the information from 3a. 范文:The telephone is one of the most important inventions in the world. It was invented by Alexander Graham Bell in 1876. Bell invented the telephone because he wanted to help people communicate more conveniently across long distances. During his invention, he met many difficulties, especially in improving sound transmission. However, he never gave up and finally made it. The telephone has greatly changed our life. It makes long-distance communication much faster and easier, and also promotes the development of global communication. 【教师活动】分析范文结构:开头(发明概述) 原因(发明动机) 过程(困难与坚持) 影响(改变生活),指导学生模仿结构进行写作。 【学生活动】选择一项发明进行研究,完成研究笔记,参照范文撰写一篇介绍该发明的短文,注意使用被动语态。 Step 7 语言点1 be looking to do sth 【知识点】be looking to do sth 意为“打算/计划/想要做某事”,侧重心里有明确目标、主动计划去做,区别于单纯“想要”。基本结构:主语 + be动词 + looking + to do(动词不定式)。同义替换:= plan to do sth = intend to do sth = want to do sth(语气更弱)。 语言点1:be looking to do sth 练习: 1. My brother _ improve his English, so he reads English every morning. A. looking to B. is looking to C. looks to D. was looking 2. 翻译句子。我们打算参加学校的发明展。 We are looking to take part in the school's invention exhibition. 【教师活动】讲解be looking to do sth的用法,强调be动词随主语变化,引导学生完成练习并核对答案。(参考答案:1. B 2. We are looking to take part in the school's invention exhibition.) 【学生活动】完成练习,造句巩固be looking to do sth的用法,注意主谓一致和时态。 【学生活动】核对答案,归纳be looking to do sth的用法要点,与plan to/intend to进行同义替换练习。 【重点强调】be looking to do sth用法 be动词必须与主语保持人称和数的一致,looking to后接动词原形(不定式)。如:They are looking to invent a new device.(他们正计划发明一种新装置。) 【过渡语】掌握be looking to do sth后,接下来学习第二个语言点come up with sth。 Step 8 语言点2 come up with sth 【知识点】come up with sth 核心义为“想出;提出;找到”(主意、计划、发明、答案、解决方案等)。同义替换:= think up(口语化,想出)= put forward(正式,提出计划/观点)= work out(侧重想出、算出具体方案)。例:He came up with a good plan. 他想出了一个好计划。 语言点2:come up with sth 练习: 1. 同义句改写。She thought up a creative invention.(用come up with) She _ _ _ a creative invention. 2. 翻译句子。他提出了一个改变人们生活的发明。 He came up with an invention that changed people's lives. / He put forward an invention that changed people's lives. 【教师活动】讲解come up with sth的用法,与think up/put forward/work out进行同义辨析,引导学生完成练习。(参考答案:1. came up with 2. He came up with an invention that changed people's lives.) 【学生活动】完成同义句改写和翻译练习,尝试用come up with造句,与同义短语进行替换练习。 【知识拓展】come up with同义辨析 think up偏口语,强调创意过程;put forward偏正式,适用于会议或学术场合;work out侧重经过思考或计算得出具体方案。根据语境选择恰当的表达。 【过渡语】语言点学习完毕,接下来进入4a-4d项目活动,动手制作发明海报。 Step 9 4a-4d 项目活动 【教师活动】组织学生阅读学校通知,选择一个想要改进的领域,分组讨论可能的发明创意。 4a Read the school notice. Choose one area you want to make improvements in. 4a 选择改进领域 4b Work in groups. Discuss what inventions could help in your chosen area. 4c Make a poster about your invention. The poster should include: • the name of the invention • a picture of it • what it is made of / from • what it is used for • what effect it has on people's lives 4c 海报制作要求 4d Present your poster in the exhibition. Vote for your favourite ones. 【学生活动】阅读通知选择改进领域,小组讨论发明创意,制作海报并在班级展览中展示,投票评选优秀作品。 【教师活动】组织展示活动,引导学生在Show Time环节展示海报,互相评价,投票选出最佳发明创意。 【学生活动】小组展示海报,介绍发明名称、材质、用途和影响,互相评价,投票选出最佳作品。 【重点强调】海报制作要点 海报须包含五项要素:发明名称、图片、材质、用途、对生活的影响。语言简洁明了,图文并茂,突出发明的创新性和实用性。 【过渡语】项目活动展示完毕,接下来进行课堂总结。 六、板书设计 类别 内容 新词 rapidly, afford, company, sticky, songbook, production, gradually, widely, glider 表达 be looking to do sth, come up with sth 句型 (1) ...were not looking to change the world at all. (2) The invention of the plane has made our travels around the world much easier and faster. 学科网(北京)股份有限公司 $