Teaching Procedures I. Introduction 1. Introductory remark A survey is a detailed investigation of people's behavior or opinions. as a major research tool, surveys have been used by politicians, business people and social scientists to find out more about a group of people. The most complete and important survey in the United States is the national census, which is an official count of the number of people living in the country. The censor gives a great deal of information about both population and changes in American life. And it helps the government and people to under-stand and to adjust to the changing society 2. Text-related Information 1)Opinion polls A survey of potential voters to determine their mood and attempt to determine he outcome of the election. Opinion polls started to play a part in American politics in the 1930s when the Gallup poll predicted the election of President roosevelt in 1936 2)Census(Latin census, to assess)Teaching Procedures Ⅰ.Introduction 1. Introductory remark A survey is a detailed investigation of people’s behavior or opinions. As a major research tool, surveys have been used by politicians ,business people and social scientists to find out more about a group of people. The most complete and important survey in the United States is the national census, which is an official count of the number of people living in the country. The censor gives a great deal of information about both population and changes in American life. And it helps the government and people to under-stand and to adjust to the changing society. 2.Text-related Information 1) Opinion Polls: A survey of potential voters to determine their mood and attempt to determine he outcome of the election . Opinion polls started to play a part in American politics in the 1930s when the Gallup poll predicted the election of President Roosevelt in 1936. 2)Census(Latin census ,”to assess”)