Unit 5 Revealing nature Understanding ideas 课件-2025-2026学年高中英语外研版选择性必修第一册

该高中英语课件围绕达尔文进化论的发现历程展开，通过Pre-reading的词汇学习（如zebra、tortoise等新词汇）、进化树物种识别、对话情境引入及达尔文背景介绍，搭建从基础词汇到科学理论的学习支架，帮助学生建立主题认知。 其亮点在于将语言能力培养与科学探究结合，Pre-reading的进化树活动既巩固词汇又建立生物分类概念，Fast reading按时间顺序梳理文章结构（旅行前、中、后）培养逻辑思维，Careful reading通过时间线（1831年旅程、1835年思考、1859年出版）和“Think and share”分析达尔文品质，渗透科学精神（truth-seeking、perseverance）。采用任务型阅读与主题小结（形容词概括旅程特点），学生能提升语言运用与逻辑思维，教师可借助清晰流程和多样化活动提高教学效率。

Unit 5 Revealing nature Understanding ideas Contents Post-reading Careful reading Fast reading Pre-reading I II III IV I Pre-reading zebra 斑马 tortoise 乌龟 crab螃蟹 snail蜗牛 earthworm 蚯蚓 paramecium 草履虫 [ˈɜːθwɜːm] earthworm [ˌpærəˈmisɪəm] paramecium New words Ⅰ go back frog 青蛙 moss 苔藓fern蕨类植物 algae水藻，海藻 New words Ⅱ go back pre - reading Look at the evolutionary tree and answer the questions. Q1. What species do you recognise in the picture? Evolutionary tree Q2. What factors can cause the process of evolution? weather, environment,genetic mutation(基因突变) .... 物种 认出 因素 进化 human zebra tortoise fish crab snail fern moss earthworm paramecium algae 1. What species do you recognise in the picture?(P66) Evolutionary tree bird frog pre - reading New words Ⅰ New words Ⅱ pre - reading lower forms of life higher forms of life evolution The direction of evolution: Tom ... pre - reading Tom:Hey, juli. I am curious about evolution . Can you recommend something to me ? Who do you recommend ? Tom : That will be great! Tom pre - reading pre - reading Charles Darwin geologist(地质学家）, naturalist British (英国人） The founder of Theory of Evolution 进化论 Published the Origin of Species 《物种起源》 [tʃɑ:lz] [ˈdɑːwɪn] Turn to P66 and step on Darwin’s journey of discovery! What’s the story behind Darwin’s discovery of Theory of Evolution? II Fast reading A Journey of Discovery What is the journey like? What’s the discovery? Fast - reading Para_____ The structure 2-5 The text is organized in order of______ . Para___ Para _____ time During the journey After the journey 1 6-7 Fast - reading Before the journey III Careful reading He was not the captain's _______________ He was a ________ to himself and all his family He was a young man who had left ______________ without_______________. first choice completing his degree medical school disgrace Labels on the young man In common people's eyes In captain's eyes In father's eyes careful - reading Para.1 careful - reading 1.on his journey 踏上旅途 2.generate ideas 产生观点 3.look for more evidence 寻求更多证据 4.develop ideas 发展观点 5.propose a theory 提出理论 Para.2前半部分 Para.2后半部分 Para.3 Para.5 Para.6 careful - reading various living things in their natural environments very similar to each other Para.2 Para.3 careful - reading come to exist Maybe animals evolved as they adapted to their changing environments ? Para.2 Para.3 careful - reading that there was a difference between the finches on each of the islands. had evolved according to what food was available on that particular island. Para.4 1. In which aspect were these birds different？ 2. What caused their differences? Beaks Food available on that particular island A _________ ancestor common __________ into different species evolve 共同的 careful - reading had evolved from a common ancestor slowly evolved into many new species Para.5 careful - reading had evolved from lower forms of life. Para.6 _______ to believe people were _______ ______ to believe refused shocked started People’s reaction towards the theory Para.6 What do you think about the theory of Evolution? Today, On the Origin of Species is regarded as one of the most important works ever written. It has changed ideas about life on Earth forever. And it all began with the journey on the Beagle A Journey of Discovery Journey on the ___________ Journey to discover _______________ the Beagle The Theory of Evolution careful - reading Choose the main idea of the passage and give your reasons. Darwin’s interest in various living things made him a great naturalist. Darwin’s journey on the Beagle inspired his Theory of Evolution. Darwin went on a journey to confirm his theory that humans had evolved over time. 激励 渐渐地，慢慢地 P68 1831 the Beagle started his journey South America, asked himself questions (generated ideas) 1835(developed an idea) answered the question 1859 published the book (proposed a theory) Darwin spent _____ years on his discovery But spent _____years publishing his Theory of Evolution in 1859 4 24 A ________ Journey of __________Discovery by_______Darwin tough important brave perseverant Summary dangerous revolutionary Think and share What kind of person was Darwin according to the passage? What have you learnt about the spirit of scientific exploration? Darwin was a determined man. He had strong curiosity and interests in science and was good at thinking and making discoveries. truth-seeking. perseverance. dare to question/challenge the authority.... I can succeed in science. The most important thing is the love of science and insisting on long-term exploration. —Charles Robert Darwin Darwin’s scientific spirit null 3030.2073 Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 $