(
课件网) Unit 1 人教版2019选择性必修第二册 Science and Scientists Reading and Thinking John Snow Defeats “King Cholera” What is the problem we are seeing coughing sneezing fever Observe: find a problem Lead in Activity1:Think like a scientist They’re sick . Ask a question What brings this sickness /How does this sickness spread Lead in Activity1:Think like a scientist What’s our first question Think of a method Theory1: the air An interview A spot map Theory2: food or water. Lead in Activity1:Think like a scientist How can we find the answer Collect data What evidence will we collect From interview For the map Lead in Activity1:Think like a scientist Find common point（共同点） Pattern（规律） Analyze the results&Conclude What other evidences can we find Conclusion: The water foutain(饮水机）is the source. Lead in Activity1:Think like a scientist Pre-reading Discuss the following stages of scientific research in groups and put them into correct order. _____ analyze the results _____ ask a question _____ Draw a conclusion _____ collect data _____ Find a problem _____ Think of a method _____ find supporting evidence Activity2:Ordering the stages John Snow Defeats King Cholera What will be talked about from the title Who How What What does “ King ” imply in the title Pre-reading Activity3:Title Prediction Let’s get more details While-reading Who is John Snow What is the“King Cholera” find a problem What caused Cholera While-reading Para1 Careful-reading Two theories ask a question was the cholera outbreak so severe in two particular streets So he needed to think of a method to prove his opinion. Careful-reading Why Para2 A map of Broad Street-“Cholera Map” What method did Snow use 1.Which houses had more than 4 deaths and which had no death in Broad Street Multiple deaths happened here. No death happened here. analyze the results think of a method collect data Careful-reading Activity4:Cholera Map Analysis 2.What did Snow doubt He suspected the was the problem. water pump Finding Evidence Place: Who: Event: In another part of London A woman and her daughter died of cholera because of drinking the water delivered from the pump The pump water carried cholera germs. The disease was stopped. Draw a conclusion Careful-reading He the handle of the pump. removed Para3 Order Stage Questions 1 Find a problem what caused Cholera 2 Ask a question Why was the cholera outbreak so severe in two particular streets 3 Think of a method what method did Snow use to study the problem 4 Collect data Which house numbers are related to the case 5 Analyse the results Why were there multiple deaths near the water pump 6 Find the supporting evidence What supporting evidence can prove the connection 7 Draw a conclusion What conclusion did John Snow draw based on the evidence about the pump water While-reading According to the Para4 and Para5 to finish the questions below. Snow’s contribution: Fortunately, we ... ...
