北师大版（2019）选择性必修第四册Unit 10 Connections Lesson 1 How Closely Connected Are We 课件(共20张PPT，内镶嵌视频)

(共20张PPT)
Unit 10 Connections
Lesson1 How Closely Connected Are We
1. How many of you use social media
2. How many contacts do you have on social media
3. How many people do you regularly communicate with
Activate and share
Activity1 Prediction
Connections
Activity 1 Prediction
Pre-reading
Six Degrees of Separation
六度分隔，又称为“小世界现象”。大意是说，任何两个素不相识的人中间最多只隔着六层关联，即只需要不超过五个人就可以将两个陌生人联系在一起。
Look at the picture and talk about the theory “Six Degrees of Separation”.
introduction
development
conclusion
introduction
in 1967
in the Mid-1990s
in 2003
in 2011
conclusion
Q1. What does the theory “Six Degrees of Separation” mean Q2. When was the concept first talked about The theory means aperson can be connected to anyone through no more than five other people.The concept was first talked about in the 1920s.Activity 3
introduction
conclusion
1967
mid-1990s
2003
2011
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result
who
who
how
Activity 3
1967
mid-1990s
2003
2011
Activity 3
who
result
how
introduction
conclusion
introduction
conclusion
1967
mid-1990s
2003
2011
who
result
how
Columbia University
Activity 3
introduction
conclusion
1967
mid-1990s
2003
2011
who
result
how
the University of Milan
Activity 3
Four different experi-ments
Who
How
When
Different
Fill in the mind-map
What
Similar/Same
Connections
Activity 4
Retell two experiments based on the following formation.
Connections
Tips: Who invented the idea How did people do
What was the result
1967 Program: choose, a random of , ask sb to do sth, send packages to ….,
It takes … to do sth, get the parcels delivered.
2003 Program: recreate Milgram’s experiment, involve 24,163 email chains, 18 target people, confirm, the average number of …. is…
You can begin your retelling like this:
In 1967, Stanley Milgram tried to test the theory.
Activity 5
Group Work. Think and share.
1. Why did Milgram and Columbia University
both label their experiments “Small world”
2. Why do you think people study how people are connected
Activity 6
Group Work. Think and share.
1. Why did Milgram and Columbia University
both label their experiments “Small world”
Because they believed that any person on earth could be connected to any other person through a chain of no more than five other people. In this sense the world is small.
Activity 6
Group Work. Think and share.
2. Why do you think people study how people are connected
Probably because people want to study the structures of human society, the rules of human social activities, and how people are connected with each other.
Activity 6
Ⅴ Assignment
Suppose you did an experiment in groups based on the “Six Degrees of Separation” theory last week. Write an essay to introduce its process and findings.
Experimental subject: A bus driver/ delivery man
Assessment sheet
Items Criteria Scores
Content reasonable 1 2 3
Structure coherence and transition 1 2 3
Language rich expressions and sentence patterns 1 2 3
Accuracy correct spelling and grammar 1 2 3
Handwriting neat and beautiful 1 2 3
Total score 15
Thank you !