Unit 10 Connections Lesson 1 How closely connected are we? 课件-2025-2026学年高中英语北师大版（2019）选择性必修第四册

Lesson 1 — How Closely Connected Are We? 1 Pre-reading 1. How many contacts (a person that you know) do you have on WeChat or QQ? 2. How many people do you regularly communicate with? 500 + contacts 10 people Theory: Six Degrees of Separation Pre-reading We are closer to the rest of the world than we think ! While-reading 1. Who introduced the theory? 2. When was the concept first talked about? 3. What does “Six Degrees of Separation” theory mean? Read the first two paragraphs: While-reading In the 1920s, Frigyes Karinthy invented the theory, which means any person on Earth can be connected to any other person thorough a chain of no more than five other people. You ! A Stranger! 1 2 3 5 4 While-reading Do you believe Six Degrees of Separation ? experiments ! How- He chose a random sample of people in the middle of America and asked them to send packages to a stranger in the state of Massachusetts. Who- Stanley Milgram In 1967 Findings/Results- It only took between five and seven people to get the parcels delivered. Text builder—How Closely Connected Are We? Examples to prove the theory Line21: “small-world problem” 7 How- They invented a game, the idea of which was to link any actor to Kevin Bacon through no more than six links. Who- Two college students in the United States In the mid-1990s Findings/Results- The game was being played in universities across the United States. Text builder—How Closely Connected Are We? Examples to prove the theory 8 How- Columbia University tried to recreate Milgram’s experiment on the Internet. It involved 24, 163 email chains with 18 target people in 13 different countries. Who- Columbia University In 2001 Findings/Results- It confirmed that the average number of links in the chain was six. Text builder—How Closely Connected Are We? Examples to prove the theory Line 51: “ Columbia Small-world Project” 9 How- The experiment analyzed the relationship between 721 million social media users. Who- the University of Milan In 2011 Findings/Results- 92% were connected by only four stages, or five degrees of separation. Text builder—How Closely Connected Are We? Examples to prove the theory six four /five degrees of separation. 10 In the mid-1990s How Closely Connected Are We In 1967 Text builder—How Closely Connected Are We? In 2011 In 2001 Examples to prove the theory Introduction Conclusion Who: Hungarian author Frigyes Karinthy People are closely connected. When: in the 1920s. definition 11 Does "connected" mean "knowing each other"? Discuss the difference between a "link" and a "friendship" Post-reading According to the theory, how can weak ties (friends of friends, online friends, schoolmates) bring you chances? Post-reading Do you think “more connections mean more value”? What makes a truly good relationship? $