高三英語上冊全套教案
2. what do you know about cholera?
cholera is the illness caused by a bacterium called vibrio cholerae. it infects people’s intestines(腸), causing diarrhea and leg cramps (抽筋).the most common cause of cholera is by someone eating food or drinking water that has been contaminated(污染) with the bacteria. cholera can be mild(不嚴重的) or even without immediate symptoms(癥狀), but a severe case can lead to death without immediately treatment.
3. do you know how to prove a new idea in scientific research?
anybody might come out with a new idea. but how do we prove it in scientific research? there are seven stages in examining a new idea in scientific research. and they can be put in the following order. what order would you put the seven in? just guess.
find a problem→ make up a question→ think of a method→ collect results→
analyse the results→ draw a conclusion→ repeat if necessary
iii. reading
step i pre-reading
1. do you know john snow?
john snow is a well-known doctor in the 19th century in london and he defeated “king cholera”.
2. do you know what kind of disease is cholera?
it is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat.
let’s get to know how dr. john snow defeated “king cholera” in 1854 in london in this reading passage:
step ii skimming
read the passage and answer the questions.
1. who defeats “king cholera“? (john snow)
2. what happened in 1854? (cholera outbreak hit london.)
3. how many people died in 10 days? (500)
4. why is there no death at no. 20 and 21 broad street as well as at no. 8 and 9 cambridge street?
(these families had not drunk the water from the broad street pump.)
(optional)
skim the passage and find the information to complete the form below.
who when what how result
john snow 1854 helping ordinary people exposed to cholera examining the source of all water supplies and finding new methods of dealing with polluted waster “king cholera” defeated
step iii scanning
read the passage and number these events in the order that they happened.
2 john snow began to test two theories.
1 an outbreak of cholera hit london in 1854.
4 john snow marked the deaths on a map.
7 he announced that the water carried the disease.
3 john snow investigated two streets where the outbreak was very severe.