Unit 5 Revealing Nature Understanding Ideas A journey of Discovery 课-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“Two Truths and a Lie”活动猜测达尔文事迹导入，衔接热身环节进化因素讨论，再引导学生阅读主旨选择、整理时间线、归纳科学方法，搭建从兴趣激发到深度探究的学习支架。 其亮点在于以任务型活动链培养思维品质与学习能力，如通过时间线梳理训练细节提取能力，“Think & Share”结合文本分析达尔文的观察性、毅力等品质，小组讨论未来进化提升合作探究能力。既助学生深化语言应用与科学精神理解，也为教师提供结构化教学流程与多元活动参考。

<a href="https://www.freepik.com/free-photos-vectors/flower">Flower vector created by pikisuperstar - www.freepik.com</a> A Journey of Discovery Understanding ideas By the end of the class, students will be able to： 1. recognise and summarize the main idea of the passage; 2. sort out the procedure of the journey; 3. appreciate the spirit of the scientist’s exploration; 4. optimise cooperative learning strategy. Learning Objectives Engagement warm-up What factors can cause the process of evolution? environmental changes; genetic mutation(基因突变）； population immigration； climate change... lower forms of life higher forms of life Evolution Engagement Two Truths and a Lie Activity 1 : Please guess which one is false from the following statements about Charles Robert Darwin. (1 min.) 1. Darwin spent 5 years traveling on a ship called Beagle. 2. He immediately published his theory of evolution after the trip. 3. He studied finches in the Galapagos Islands. Exploration Reading for main idea Activity 2 : Choose the main idea of the passage and give your reasons. (2 mins.) a. Darwin's interest in various living things made him a great naturalist. b. Darwin's journey on the Beagle inspired his Theory of Evolution. c. Darwin went on a journey to confirm his theory that humans hadevolved over time. How did he make this discovery? Exploration Reading for details Activity 3 : Organize information from the passage and complete the timeline. (4 mins) ①In 1831, He left . and studied . ②In South America, He asked . when he studied . ③In 1835, He concluded the answer: w , through looking for more evidence. ④In 1859, he proposed and . published . on the Beagle England various living things how different species came to exist samples he collected They evolved from earlier ancestors. a theory of evolution On the Origin of Species 1. Observe the phenomenon 2. Generate an idea 3. Develop the idea 4. Propose a theory Exploration Reading for details Activity 4 : What Scientific Method did Darwin apply? 1. Observe the phenomenon 2. Generate an idea 3. Develop the idea 4. Propose a theory Induction（归纳法） A method of discovering genral rules and principles from particular facts and examples. Deduction（演绎法） The process of reaching a conclusion by reasoning（推理）. Explanation Think & Share Activity 5 : What other factor do you think contributes to this discovery? scientific method of exploration ② field exploration（实地考察）; ③ The opportunity to explore; ④ Darwin’s personal qualities; ...... Explanation Think & Share Activity 6 : What kind of person was Darwin according to the passage? Example: I think the Darwin is a determined man, because in paragraph...we can know... courageous observant adventurous perseverant ... Elaboration Group Discussion Please work in groups to discuss how the human species will evolve in the future and give the evidence to support your ideas.(4 mins) Sample: Criteria(评分标准） Rating Content Language Performance English Flunency We think humans will generally grow taller in the future due to abundant nutrition and improved healthcare. Sufficient nutrition could sustain height growth. Elaboration Group Discussion Homework Compulsory: 1. Complete the exercise about this class. 2. Write an essay discussing changes of people in the future. Optional: Research more information about a theory of evolution. ---Charles Robert Darwin “I can succeed in science, the most important thing is the love of science and insisting on long-term exploration.” $