Unit 19 Modern Agriculture教案

homework:
1 listen to the tape, finish the listening part on wb (p107).
2 preview the reading passage.
period 2   reading
task:
the ss are to read a passage to learn the development of modern agriculture.
goals:
1) to cultivate the students’ ability to scan & skim the passages.
2) to cultivate the students’ ability of further understanding about the text.
teaching procedure
1 pre reading
classify the pictures in the following way:
traditional farming (1 3 5)

agriculture     modern farming (2 4 6)
 
hi-tech farming (7 8)

2 pre reading
compare traditional & modern farming, focusing on the advantage & disadvantage of modern farming. then fill the form. (show the pictures again)
agriculture     advantages     disadvantages
  traditional farming   
  modern farming  
  hi-tech farming  
3 while reading
1) scanning:
q1: what’s the biggest problem to chinese farmers?
the shortage of arable land.
q2: what does gm mean?
“g” stands for “genetically”
“m” stands for “modified” (changed)
2) skimming:
a. read the whole text & find out the topic sentence in each paragraph.
b. answer the following questions:
1. how much does arable land take up in china?
only 7 percent.
2. how many ways are mentioned to make the land produce more? what are they?
4. fertilisation, irritation, 2 or more crops are planted each year where possible, more advanced technical information.
3. what does new techniques mean?
those that are used to increase agricultural production without harming the environment.
4. when did scientist start to develop new techniques?
from the early 1990s.
5. how many unusual ways are mentioned to deal with the shortage of arable land?
2. grow vegetables in greenhouses, gm.
4 post reading
1) choose the best answers.
1 in china only seven percent of the land is used for farming. this is __d__.
   a because farmers don’t need more land to produce food for the whole population
   b because china needs more & more land to build cities
   b because china needs more & more land to build cities
c because there are not enough farmers to work on the land
   d because the other land can’t be used for agriculture
2 fertilisation is a technique that is used to __a___.
   a make poor soil better     b make wet land drier
   c make dry land wetter    d grow vegetables with their roots in water instead of earth