高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists优质课件ppt

这是一份高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists优质课件ppt，共24页。PPT课件主要包含了Mask up，Cholera，who is he等内容，欢迎下载使用。

Get vaccinated
Self-islatin
We stick tgether t fight against Cvid-19.
Other kinds f epidemics（流行病）Bird-flu malaria plague（鼠疫） Ebla Smallpx（天花）
An epidemic just like crnavirus hit Eurpe in the early 19th century, d yu knw what it is?
Chlera infectin begins in the stmach. Apprximately 1 in 10 peple wh get sick with chlera will develp severe symptms such as watery diarrhea(腹泻), vmiting(呕吐), and leg cramps(腿痛性痉挛).
Jhn Snw Defeats “King Chlera”
1.Discuss the fllwing stages f scientific research in grups. What rder wuld yu put them in?
Understand the questining mind 理解质疑精神
______ analyse the results______ ask a questin______ draw a cnclusin______ cllect data______ find a prblem______ find supprting evidence______ think f a methd
hw did he d it ?
what is it?
Read the title and predict.
It used t be ne f the mst feared diseases in the wrld.It causes severe diarrhea, dehydratin, and even death.Millins f peple died frm it.
He is a famus dctr wh defeats the chlera and he attended t Queen Victria when she gave birth.
What?/Hw serius?
While-reading
JOHN SNOW DEFEATS “KING CHOLERA”
Hw did he d it?
1.Find a prblem
In the early 19th century, when an utbreak f chlera hit Eurpe, millins f peple died frm the disease.
2.Ask a questin
Hw did the chlera spread?
Tw cntradictry theries:Bad air caused the disease.Chlera was caused by an infectin frm germs in fd r water.
Which ne des Jhn Snw believe mre?
Match Jhn Snw’s research with the 7 stages.
Read Paragraph 3-4 and find ut hw he cllected data and analyze the results.
He discvered that in tw particular streets the chlera utbreak was s severe that mre than 500 peple died in ten days.
Observe and mark n the exact places where all thse wh died had lived.
3.Think f a methd
Jhn Snw’s chlera map
1. What des “—” mean? 2. What des “PH” mean?3. What des 30, 31, ... refer t? 4. Where is the pump?
1. ne death
2. public huse
3. numbers f huses
Sme husehlds (such as 20 and 21 Brad Street, and 8 and 9 Cambridge Street) had n deaths.
Brad Street
Cambridge Street
4.Cllect data5.Analyse the results6.Find supprting evidence
There were multiple deaths near the water pump.
Can Jhn Snw make sure that the water pump was t blame?
What is mre, in anther part f Lndn, a wman and her daughter had died f chlera after mving away frm Brad Street. It seemed that the wman liked the water frm the pump s much that she had it delivered t her huse every day.
1. Hw t make sure that water pump was t blame?
2. What ther evidence did Jhn Snw find t supprt the results?
After remving the handle f the pump, the disease was stpped in its tracks.
Sme cmpanies sld water that was plluted by raw waste. Peple wh drank this water were much mre likely t get chlera than thse wh didn’t.
Mre evidence
Cmplete the chart belw
marked n a map
Match the fllwing headers with the letters frm the chart abve. Write A–E in the blanks.
1. cnclusin ___ 2. evidence ___ 3. prcess ___4. slutin ___ 5. theries ___
chlera germs
Read Paragraph 5 and answer the questin.
In his use f maps and statistics, Snw transfrmed the way scientists study diseases.
Why is Jhn Snw cnsidered as the father f mdern epidemilgy?
1. What was the mst imprtant tl Snw used t defeat chlera? What cmmn medical tls, e.g. a micrscpe, didn't he use? Why?
He used maps and statistics t analyse where the deaths ccurred.
Pst-reading
2. What qualities and scientific spirits d they have in cmmn?strng sense f scial respnsibilitycritical thinkingcurage t face difficultiesquestining mindknwledgeablepassinatecreativitycmmitment/devtin
T raise new questins, new pssibilities, t regard ld prblems frm a new angle, requires creative imaginatin and marks real advance in science. ----- Albert Einstein & Lepld Infeld