高二英語(yǔ)必修五Unit 1 Great scientists教案
step ⅴ text analyzing
ask the students to analyze the text in groups.
t: now class. can you tell me what style of the passage belongs to?
s1: i think it is a report.
t: please look at the chart on the screen. the chart shows that each paragraph of the text explains john snow’s stages in his research. please read the text and find out the general idea of each paragraph and match the stage with each paragraph. discuss it in groups, and then report your answers.
paragraphs stages general ideas
1
2
3
4
5
6
7
sample answers:
s1: my group’s opinion is this: stage one “find a problem” is expressed in paragraph one. the general idea is like this: john snow wanted to find the causes of cholera.
s2: our answer is like this: paragraph two expresses the second stage “make up a question”. the general idea is like this: john snow wanted to prove which theory was correct.
s3: “think of a method” is the third stage. and it is contained in paragraph three. the general idea is like this: john snow collected data on those who were ill or died and where they got their water.
s4: the fourth stage “collect results” lies in paragraph four. its general idea is like this: john snow plotted information on a map to find out where people died or did not die.
s5: our group believe paragraph five contains the fifth stage of john snow’s research. the general idea is like this: john snow analysed the water to see if that was the cause of the illness. so this stage is to “analyse the results”.
s6: the sixth stage is “repeat if necessary”. it is contained in the sixth paragraph. the general idea is like this: john snow tried to find other evidences to confirm his conclusion.
s7: the last paragraph is about the seventh stage “make a conclusion”. its general idea is like this: the polluted dirty source of drinking water was to blame for the cause of the london cholera.
ask some students to put their answers in the chart.
paragraph stages general ideas
1 find a problem the causes of cholera
2 make up a question the correct or possible theory
3 think of a method collect data on where people were ill and died and where they got their water
4 collect results plot information on a map to find out where people died or did not die
5 analyse the results analyse the water to see if that is the cause of the illness