Unit 5 课时6 Section B（3a-3c）（情境教学课件）英语新教材人教版九年级上册

该初中英语课件聚焦“如何将想法转化为现实”的说明文写作，核心知识点包括说明文要素、结构及过去时、被动语态的运用。课堂导入通过滑翔机与飞机对比、视频及问题链，引导学生分析莱特兄弟发明案例，结合阅读材料梳理发明名称、原因等要素，再以“Great Invention Writing Map”搭建从输入到输出的学习支架。 其亮点在于以真实发明案例为载体，融合语言能力（正确使用时态语态）、思维品质（分析挑战与影响）和学习能力（小组讨论、多元评价）。通过3a图表梳理要素、3c范文示范、评价表（自评互评师评）提升写作逻辑性，帮助学生掌握说明文写作，教师可直接应用于课堂，提高教学效率。

这是1908年来的兄弟在法国公开试飞他们发明的飞机，他娴熟地驾驶着飞机在空中盘旋，然而这并不是人类首次在空中飞行，在莱特兄弟之前，已经有几位航空先驱在进行了飞行试验。那么为什么说莱特兄弟才是飞机的发明者呢？因为莱特兄弟的飞机是有动力的持续飞行，并且他们的飞行器是可受控制的，所以他们的首次飞行被国际航空联合会所认可，发明这架飞机的过程充满了曲折。下面我们了解一下他们是如何成功发明飞机的。威尔伯莱特是1867年出生在美国，弟弟奥维尔莱特比哥哥小四岁，兄弟俩都是高中没有毕业。1892年，兄弟俩开办了一家自行车销售和维修店，他们一直从新闻杂志上关注着航空器的信息。航空先驱们的事迹激励着兄弟俩将想法付诸事件。莱特兄弟认真研究了困扰航空先驱们的飞行难题，归纳起来有机翼、发动机和飞行控制三点。其中前两点上，航空先驱们已经积累了丰富的技术经验，反而是对飞行控制系统不够重视。当时的飞行先驱们往往醉心于打造大马力引擎，然后装在飞行控制系统还没有验证过的飞机上，在没有飞行经验的情况下草草起飞，造成了许多飞行先驱们的坠亡。所以莱特兄弟一开始并不着急打造动力飞机，而是通过制造滑翔机来优化飞控系统以及培养操作技巧。当时的航空研究者总是假定航空器会保持在一定的高度，然后把船舶和汽车的转向原理套用过去。莱特兄弟则提出通过倾斜机身来转向，为此他们发明了桥区机翼。1900年，莱特兄弟用制造的第一架滑翔机进行试飞，由于试飞中自由滑翔的次数太少，所以没能彻底检验机翼的工作情况。1901年，他们用改进的新型滑翔机再次试飞，但是新型滑翔机获得的升力只有理论值的3分之1。他们计算升力是使用这个方程式，其中一直沿用下来的空气压力系数是0.0054，所以他们怀疑这个系统不太准确。为此，莱特兄弟打造了一台小型风洞，使用了二百多种不同类型的微缩模型进行风洞测试，由此他们获得了更为精确的空气压力系数和激战险比的知识。莱特兄弟终于在1902年完成了首次飞行转向控制的试飞，并且他们发明的飞机三轴控制系统在1903年申请了专利。现在是时候打造动力飞机了。莱特兄弟用高强度的云杉木来建造机翼，用了一台铝铸钢铁的燃油喷射发动机作为飞机引擎，花了不到1000美元就打造了飞行者一号。1903年12月17日，飞行者一号首次飞行了12秒，共36.5米，这标志着动力飞机的成功发明。1904年，莱特兄弟又建造了飞行者二号。8月13日，飞行者二号的飞行距离达到了四百多米，9月20日，试飞的飞行距离达到了1244米。1905年，莱特兄弟又制造了飞行者三号，这架飞机试飞的飞行时间能持续20分钟，飞行距离达到了40公里。莱特兄弟相信他们的飞机已经有了商业价值，他们在1906年到1907年的时间里，开始游说美国和欧洲政府购买自己的飞机。1908年9月，莱特兄弟为美国陆军做了一次成功的试飞，飞行的时间超过了1个小时。在接下来的几周里，他连连刷新飞行高度和持续飞行时间的记录。他的飞机满足了美军所要求的双座飞机搭载一名乘客、续航一小时、平均时速64公里并无损伤着陆的条件。他们以3万美金的价格将飞机出售给美国通信兵团航空部还为此成立了莱特公司经营飞机生意。那个时候会买飞机的客户还不太多，但是莱特兄弟培养出了许多飞行员，为了飞机事业，兄弟俩终生都没有结婚，如果换做是你，你愿意接受这么大的牺牲吗？ 课型：写作课 课时：3a-3c Unit 5 Power of Ideas Section B How do we turn ideas into reality? 学生能够读懂介绍发明的说明文语篇，理解发明类文章固定写作要素，掌握本单元核心被动语态句型，能梳理并归纳出发明作文的标准写作框架。（学习理解） 01 学生能够脱离模板支架，自主选择陌生发明、自主梳理写作信息，灵活运用所学句型和衔接词独立成文，学会赞美创新精神、感悟发明改变生活，实现语言输出与情感价值的迁移。（迁移创新） 03 学生能够依托课本 3b 写作脚手架，套用固定句型和段落结构，完整、规范地完成一篇介绍新发明的短文写作，能正确使用过去时、被动语态介绍发明过程，做到文章结构清晰、要点齐全。（应用实践） 02 教学目标 01 Lead-in Lead - in glider plane Lead - in What do you know about these inventions? What’s the difference between a glider and a plane? A glider has no engine, while a plane has an engine. The Wright brothers added an engine to a glider to create the first plane. Let’s watch and learn! 02 Pre- writing Words and Expressions be looking to do sth. phr. 试图找到做某事的方法 engine n. 引擎 Let’s read and think! It’s about the invention of the plane. It introduces the Wright brothers’ invention process, their challenges and the great influence of the plane. What is the passage about? Passage Analysis 介绍飞机的 发明 主题 说明文 文体 第三人称 人称 一般过去时 一般现在时 现在完成时 时态 Read the text and complete the chart. 3a Para. 1 What was invented? Who were the inventors? Why was it invented? The plane. Orville Wright and Wilbur Wright (the Wright brothers). They wanted to fly like birds. Read the text and complete the chart. 3a Para. 2 What challenges were met? How was it invented? When was it invented? Getting the glider into the air and controlling it during flight. They studied bird flight to solve flight problems, then fixed an engine to a glider. In December 1903. Read the text and complete the chart. 3a Para. 3 What was its effect? It shortens travel time greatly, makes international communication simpler and connects the whole world closer. Fill in the blanks according to the passage. _________ was invented by _________________ in _______________. It was invented because ________________________. It was made of / from ___________________. The inventor had difficulties in ____________________________________ _____________. The invention was responsible for / led to __________________________ _____________________________________________________________. The plane the Wright brothers December 1903 they wanted to fly like birds a glider and an engine getting the glider into the air and controlling the world and better communication between people from different countries easier and faster travel around it during flight Mind Map 03 While-writing Choose a great invention you are interested in. Do some research and make notes about it. 3b ________________ was invented by ____________in _______. It was invented because ___________________________________________. It was made of / from _____________________________. The inventor had difficulties in ____________________________________ ____________________. The invention was responsible for / led to __________________________ _______________________. The ballpoint pen László Bíró 1938 fountain pens leaked easily and their ink dried slowly metal, plastic and quick-drying ink making the tiny metal ball work well without people to write everywhere a cheap and convenient way for ink leaking or blocking —————————————————————————————— —————————————————————————————— —————————————————————————————— —————————————————————————————— —————————————————————————————— —————————————————————————————— —————————————————————————————— —————————————————————————————— The ballpoint pen was invented by László Bíró in 1938. At that time, fountain pens were not convenient. They often leaked and their ink dried slowly, so Bíró decided to create a better writing tool. It was made of plastic, metal and quick-drying ink. The inventor had many difficulties. It was not easy to design the tiny metal ball and stop the pen from leaking. After lots of tests, he made it. This great invention led to a cheap and convenient way of writing. Now ballpoint pens are widely used all over the world and bring great convenience to our daily life. Write about the invention you have chosen using the information from 3b. 3c 04 Post- writing Checklist Self-evaluation Peer-evaluation Teacher-evaluation Clear structure Topic sentence More relative information Right linking words Right grammar Right spelling Good handwriting Let’s evaluate! 真题速递 在英语课上，你们班开展了一次以“The Power of Ideas”为主题的讨论。请你根据以下要点，用英语写一篇短文，向校英语报投稿，分享你对“想法的力量”的理解。 要点提示： 1. 想法的重要性：想法可以改变世界（举例说明）； 2. 如何产生好的想法：观察生活、多问问题、合作交流等； 3. 作为中学生，我们该如何培养创造性思维？ 真题速递 As the saying goes, “A good idea can change the world.” I strongly believe that ideas have great power. Here are my thoughts on this topic. Ideas are powerful enough to change the world. Many great inventions, such as the Internet, came from simple creative thoughts. Good ideas won’t appear easily. We need to observe daily life, keep curious and ask more questions. Besides, valuable ideas can be improved through collaboration with partners. As middle school students, we should develop creative thinking. We’d better keep curious and dare to put forward new opinions. Don’t fear failures, for they can guide us to turn ideas into reality. In short, never stop thinking and creating. 05 Exercises The great man’s success lies in his brave and ________ thoughts. A．inspire B．inspired C．inspiring D．inspiration 2 —What materials ________ paper ________ from in ancient China? —Bark, plants, and old clothes. A．is; made B．was; made C．did; make D．was; making 3 The spread of printing and paper ________ a rapid increase in the number of books. A．resulted from B．resulted in C．led to D．B and C 1 Multiple choice. A film was __________ (produce) by a film company to tell us about robots. News could travel much more ________ (rapid) with inventions like the radio. The use of modern medicine has helped control many __________ (danger) diseases. It first spread to China’s neighbouring countries and finally ________ (reach) Europe in the 12th century. The emperor was very pleased and ________ (praise) Cai Lun for his great work. Fibre made from oil provides a cheap ________ (solve) to the problem. produced 语法填空 rapidly dangerous reached solution praised 1. 这些材料要么很难使用，要么非常昂贵。 These materials are ________ difficult to use, ________ very expensive. 2. 便利贴逐渐流行起来，现在在世界各地被广泛使用。 Sticky notes gradually became popular and now are widely used ______ ______ ______ ________. 3.令他惊讶的是，他生产出了一种非常弱的胶水。 _______ ______ ___________, he produced a glue that was really weak. either or 根据汉语提示完成句子 all over the world To his surprise 06 Homework 假设你是李华，学校正在举办“改变世界的伟大想法”主题征文活动。请你根据以下提示，写一篇英语短文，介绍一个你认为改变了世界的想法或发明。 提示要点： 1. 这个想法/发明是什么，是谁提出的； 2. 它如何改变了人们的生活或世界； 3. 你从中得到的启示。 Homework Thanks! Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 $