(
课件网) LESSON 3 EPIDEMICS EXPLAINED UNIT 9 HUMAN BIOLOGY LEARNING OBJECTIVES To read and talk about epidemics and diseases; To compare personal opinions with the ideas of others; To read for specific information to understand words in context; To notice the organisational structure of the passage; To express and discuss ideas in a group setting; To learn and practise using phrasal verbs; To search online for information and present findings to the class. KEY POINTS AND DIFFICULT POINTS To answer the comprehension questions; To get key information in the text; To get the organisational structure of a passage; To learn words and expressions in context; To struggle with complicated sentence structures; To think critically and express opinions freely. LEADING IN What epidemics do you know about LEADING IN What epidemics do you know about COVID-19 is a new strain of coronavirus that has not been previously identified in humans. The COVID-19 is the cause of an outbreak of respiratory illness first detected in Wuhan, Hubei province, China. LEADING IN What epidemics do you know about Severe acute respiratory syndrome (SARS) is a viral respiratory illness that was recognized as a global threat in March 2003, after first appearing in Southern China in November 2002. LEADING IN What epidemics do you know about Ebola Virus Disease (EVD) is a deadly disease with occasional outbreaks that occur mostly on the African continent. EVD most commonly affects people and nonhuman primates. It is caused by an infection with a group of viruses within the genus Ebola virus. LEADING IN Epidemics VS Pandemics What do you know about epidemics Tick ( ) the statements that you think are correct. □ 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. √ √ ACTIVATE AND SHARE √ What do you know about epidemics Tick (√) the statements that you think are correct. □ 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. √ √ ACTIVATE AND SHARE √ Read the passage and find out the following questions. READ AND EXPLORE 1. What is an epidemic An epidemic is the name given to an infectious disease that rapidly spreads to a large number of people within a short period of time—usually two weeks or less. 2. How can a disease be classified as an epidemic Each disease can only officially be classified as an epidemic once a certain number of deaths have occurred from the disease. 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. READ AND EXPLORE bird flu, the 1918 Spanish Flu, the Black Death, SARS, the Ebo ... ...
