(
课件网) Unit 9 Unit 9 HUMAN BIOLOGY LESSON 3 EPIDEMICS EXPLAINED To read and talk about diseases To make and confirm guesses based on a general understanding To read for general information and specific information To notice the organisational structure of a passage To express and discuss ideas in a group setting To practise using phrasal verbs To search online for information and present findings to the class What do you know about flu What is the biggest difference between a common cold and a flu When having a cold, in most cases one can recover by himself within one week. But flu spreads quickly and can affect large numbers of people! Besides flu, what other epidemics do you know about SARS, swine flu（猪流感）, bird Flu, Corona virus（冠状病毒） EPIDEMIC What do you know about epidemics Tick ( ) the statements that you think are correct. There is a scientific term for diseases that affect many people. They’re called epidemics. An epidemic is the rapid spread of an infectious disease. An epidemic can affect a large number of people in a given population. An epidemic can occur within a short period of time, usually two weeks or less. An epidemic may spread to several countries or continents. Some common viruses, such as the common cold, are not epidemics. A new epidemic can be a different variation of a virus that people caught in the past. What can you predict from the title EPIDEMICS EXPLAINED Read the passage. Find out what an epidemic is and how a disease can be classified as an epidemic. Then circle all the epidemics mentioned in the passage. bird flu, 1918 Spanish Flu, the Black Death, the SARS, Ebola Virus Disease How does the passage develop In order of time. In order of space. In order of logic. In order of place. Read the passage again. Complete the table about the epidemics mentioned. Then chose one disease to talk about with a partner. Name Period Places Death toll Bird Flu Epidemics in the Roman Empire The Black Death The Spanish Flu SARS EVD since 1997 more than a hundred lives 500-550 CE Rome half the population 1330s Asia and Europe 1918 - the end of World War I 50 million people 2002 - 2003 China, Canada, Vietnam and Singapore 2013-2016 West Africa more than 11,310 death Tick ( ) the aspects of information that are mentioned in the passage. Use a diagram to demonstrate in a logical way how they are organised. when epidemics started definition examples of epidemics when it ended treatments possible causes of epidemics baseline number of deaths possible solutions of epidemics Developing Concepts Based on the Text Concepts are not always clearly defined in a text. You need to read and develop your understanding. Read the text to get the general idea. Identify all the information related to the concept, e.g. examples, developments, effects, etc. Organise the information and explain the concept from different angles. Draw your diagrams. definition when epidemics started examp ... ...
