Unit 5 Revealing nature Starting out & 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“Revealing nature”主题，聚焦达尔文进化论的发现过程及科学探索精神。课堂导入通过观察科学杂志动物特征、讨论种子传播方式、分析进化树结构，从具体生物现象到进化概念，搭建由浅入深的学习支架，帮助学生建立知识脉络。 其亮点在于融合任务型教学与思维训练，通过“拼图排序整合信息”“词汇填空丰富表达”等活动，提升学生的语言运用能力和逻辑思维品质。例如，While-reading环节让学生按“旅程观察-产生想法-寻找证据-发展理论-提出理论”顺序排列拼图，培养信息梳理与批判性思维。Post-reading引导学生联系自身探讨科学精神，助力学习能力提升。学生在任务中深化对主题的理解，教师可借助连贯活动设计高效开展教学。

Revealing nature Book 4 Unit 5 Starting out & Understanding ideas Activity 1 Look at the page from a science magazine and answer the questions. 1. What do you know about these animals? What makes them special? 2. What other similar animals do you know about? Share your knowledge with the class. They are all species that exit thousands of years on earth; They are old and rare (unusual). Activity 2 carried by the wind, water, and animals. a better chance at life How can seeds travel? How can this benefit plants? 2. Can you think of another example of seeds travelling? Share it with the class. • Dandelion seeds have little parachutes to catch the wind and go further; • Humans can spread seeds if seeds get stuck to their clothing or shoes. 4 Activity 3 Look at the evolutionary tree and answer the questions. 1 What species do you recognise in the picture? Paramecium(草履虫), earthworm(蚯蚓), snail, crab, fish, tortoise, bird, horse, human, frog, alga(藻类), moss(苔藓), fern(蕨类植物), plant... 2 What factors can cause the process of evolution? The ever-changing environment of nature; environmental changes; population immigration; genetic mutation(突变); cultural preferences... Who made this discovery? What is the discovery? While-reading 6 Choose the main idea of the passage and give your reasons. 1. Darwin’s interest in various living things made him a great naturalist. 2. Darwin’s journey on the Beagle inspired his Theory of Evolution. 3. Darwin went on a journey to confirm his theory that humans had evolved over time. The title of the passage is “A Journey of Discovery”. So the passage is mainly about how Darwin’s Theory of Evolution generated and developed on his journey on the Beagle. Who made this discovery? What is the discovery? While-reading How did he make the discovery? 8 Number the puzzle pieces in order. Organise information from the passage and complete them. 1 4 2 3 5 1 On his journey various living things in their natural environments and samples of the plants and animals he had collected very similar to each other 2 Generate ideas • come to exist • Maybe animals evolved as they adapted to their changing environments？ Number the puzzle pieces in order. Organise information from the passage and complete them. 1 4 2 3 5 3 Look for more evidence 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. 4 Develop ideas had evolved from a common ancestor, which had arrived on the islands a long time before slowly evolved into many new species. 5 Propose a theory • had evolved from lower forms of life. What words would you put before the words? A/An __________Journey of __________ Discovery by __________Darwin dangerous adventurous time-consuming important revolutionary refreshing far-reaching courageous determined persistent devoted curious 11 Post-reading What have you learnt about the spirit of scientific exploration? How can this spirit help you in your life and studies? Lavf56.40.101 Tencent APD MTS $