Unit 5 Revealing nature Starting out & Understanding ideas 课件-2024-2025学年高二英语外研版（2019）选择性必修第一册

Unit 5 Revealing nature reveal :make something that previously unknown known. 1 FREE TALK:What animals are you interested in? Group work. Discuss the animals you are interested in.What makes you interested in them? （one minute） Look at the page from a science magazine and answer the questions. 1 What do you know about these animals?What makes them special? They are all species that exist thousands of years on earth. They are old and rare (unusual). Look at the page from a science magazine and answer the questions. 2.What other similar animals do you know about?Share your knowledge with the class. Goblin shark 哥布林鲨 giant salamander娃娃鱼 aardvark 土豚 Living fossil 活化石 Charles Darwin If a friend of you is curious about evolution, which famous person do you recommend him to know about? What do you know about him? Pre-reading: Predict the main idea of the text according to the picture and the title. A Journey of Discovery 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. Read for the main idea（5 minutes） Para 1. Para 2. Para 3. Para 4. Para 5. Para 6. Para 7. A. Darwin was not the captain’s first choice but his adventures on the Beagle led to one of the most importnat scientific discoveries of all time. C. Darwin began his journey. D. Darwin began to think differently. B. Some bird on the Galápagos Islands interested Darwin . F. Darwin suspected that the birds evloved from earlier ancestors. G. More and more people started to believe Darwin’s theory of evolution. E. On the Origin of Species is regarded as one of the most important works ever written. This passage is a narrative essay, in which Darwin’s journey of discovery is described in time order. This kind of essay is usually used to tell about a specific person or event. So it’s convenient to present all the facts from earlier to the later and it’s more understandable for the readers. Before the journey During the journey After the journey Para.1 Para.2 Para.3 Para.4 Para.5 Para.6 Para.7 Introduction On his journey Generate ideas Look for more evidence Develop ideas Propose a theory Conclusion Read for structure（one minute） Read for details Order the puzzle pieces and complete them. very similar to each other come to exist Maybe animals evolved as they adapted to their changing environments? 1 2 various living things in their natural environments and samples of the plants and animals he had collected. 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. had evolved from a common ancestor, which had arrived on the islands a long time before slowly evolved into many new species. had evolved from lower forms of life What was Darwin's new theory then? A. Environment played an important role. B. Species evolved with the changing environment. C. Different species lived in different environment. D. The more complicated the species were, the more time it took. 16 Think & share What good qualities does a person like Darwin should have? Think & share Speech Discuss with your group and make a short speech on “Inspiration on the ‘A Journey of Discovery’”. Tips: 1. You can use the some information that leaves you a deep impression in the passage. 2. You can talk about reflection(反思） on the shortcomings and improvements in life or study after learning the journey of Darwin. 3.You can talk about what you have learnt about the spirit of scientific exploration and how this spirit can help you in your life and study. The first spirit you learn from Darwin is to be brave enough to try. Be active in class activities is the first step you move towards him. Homework: a.Polish your speech draft, make it more logical. b.Write a narrative essay about another scientist, who has also made a great discovery. 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 See you next class! 21 $$