Unit 10 Connections 学案-2021-2022学年高中英语北师大版（2019）选择性必修第四册

UNIT 10 CONFLICTION 美文导入 素养解读:近几年英语高考的突出特点是坚持能力立意,突出对核心素养的考查。下面这篇文章就是围绕“思维品质”这一学科素养展开的。文章介绍了与本单元话题紧密相关的“小世界理论”在社交网络中广泛运用的情况,有助于提升同学们在多方面地了解人际交往的基本原理,从而拓宽自己对人际关系、人与社会的理解。 主题:人与社会 学科素养:思维品质 难度系数:★★★★★ 【导读】本文简单介绍了“小世界理论”的原理及其在社交网络中的广泛运用。 The Small-World Phenomenon and Decentralized Search The small-world phenomenon - the principle that we are all linked by short chains of acquaintances, or "six degrees of separation" - is a fundamental issue in social networks; it is a basic statement about the abundance of short paths in a graph whose nodes are people, with links joining pairs who know one another. It is also a topic on which the feedback between social, mathematical, and computational issues has been particularly fluid. The problem has its roots in experiments performed by the social psychologist Stanley Milgram in the 1960s. To trace out short paths through the social network of the United States, he asked participants to forward a letter to a "target person" living near Boston, with t