Unit 10 Lesson 1 How Closely Connected Are We 课件-2023-2024学年高中英语北师大版（2019）选择性必修第四册

Unit 10 Lesson 1 How Closely Connected Are We ? 第一课时 Learning objectives Study and conclude the structure and language features of an expository writing. Talk about the development of the theory. Better understanding on the theory and its enlightment over human beings. Assess your performance based on the checklist. How many contacts do you have on social media? How many people do you regularly communicate with? Activate and share I A random people in the world Predict what the passage is about. Read and explore The theory Six Degrees of Separation Skim the passage to find out the structure and text type. What's the text type of the passage？ A. Narrative writing. B. Argumentative writing. C. Expository writing. Read and explore Structure Part 1 ： Introduction Part 2 ： Development Part 3 ：Conclusion Main idea： Six Degrees of Separation Read and explore What’s the text type of the passage？ A. Narrative writing. B. Argumentative writing. C. Expository writing. A detailed explanation of something such as an idea or process. Scan the first part of the passage. What does the theory Six Degrees of Separation mean? Who invented this theory? Read and explore Read and explore The theory was first introduced by Hungarian author Frigyes Karinthy in the early 20th century. Who invented this theory? It states that any person on Earth can be connected to any other person through a chain of no more than five other people. What does the theory Six Degrees of Separation mean? Scan and finish the timeline. 1929 Frigyes Karinthy Read and explore 1929 Frigyes Karinthy 1967 Stanley Milgram Mid-1990s two college students in US 2001 Columbia university 2011 University of Milan 1967 Stanley Milgram Mid-1990s Two college students in the US Process Results/ Findings 2001 Columbia University 2011 the University of Milan Take notes about the four experiments. 1967 Stanley Milgram Mid-1990s Two college students in the US …… in the middle of America…… Massachusetts（in the northeast of the US）. It only took between 5-7 people…… . …… to link…… no more than six links. …… in universities across the US. 2001 Columbia University 2011 the University of Milan ……24, 163 ……18 target people ……13 different countries. …… the average number of links was 6. …… between 721 million social media users. 92% ……by only 4 or 5 degrees of separation. Talk to yourself and introduce the theory in your own words. Compare and summarize People involved in the experiments are from different time, ages, countries and backgrounds. People want to study the rules of human social activities to prove that we are closely connected and the world is small. Differences similarities What writing techniques are used in the text? What do the title and the last paragraph have in common? What can you learn from the theory ? Think and share Writing technique：______________________ 1. What writing techniques are used in the text? Definition Think and share Writing technique：______________________ Think and share Giving examples It only took between five and seven people … … through no more than six links. The experiment involved 24, 163 email chains … 92 percent were connected by only … … with 18 target people in 13 different countries … … analysed the relationship between 721 million … Writing technique：______________________ Listing numbers It only took between five and seven people … … through no more than six links. The experiment involved 24, 163 email chains … 92 percent were connected by only … … with 18 target people in 13 different countries … … analysed the relationship between 721 million … In the 1950s, an attempt was made by two scientists to prove the theory mathematically Once the parcel had been received by this person, …… until the parcel could be personally delivered to the correct person. Soon the game was being played in universities across the United States. The concept was first talked about as long ago as in the 1920s. Writing technique：______________________ Passive voice objective scientific accurtate convincing Definition Giving examples Listing numbers Passive voice Writing techniques 2. Look at the title and the last paragraph. What do they have in common? Think and share To arouse readers’ interest and inspire further thinking. Why does the writer use questions to begin and end the article? 3. What can you learn from the theory ? Think and share Summary The structure of an expository writing The use of writing techniques, like listing numbers and giving examples The meaning and enlightment of the theory Six Degrees of Separation Reflecting Are you a wise reader? The things I can do Evaluation I can draw a mind map for the structure of an expository essay. 5 4 3 2 1 I can summarize an expository essay with its structure. I can discover the language features of an expository essay I can develop some deeper thoughts about an expository essay. I raise my confidence in reading expository. Homework Make a summary of the passage in 160 words. Based on the structure and writing techniques we learned today, write an essay to introduce another theory and say what you learn from it. Design an experiment to find out how many degrees of separation there are between students in your city who don’t know each other. Write an essay to exposit your experiment and your finding. Choose one of the tasks to complete. $$