Unit 19 Modern agriculture 第二課時(shí)教案
unit 19 modern agriculture 第二課時(shí)教案
i. teaching aims:
talk about modern agriculture and its effects on people’s life
learn how to give somebody advice and make decisions.
similar dialogue presentation with new words and expressions used within
ii. teaching aids: tape recorder, pictures, slides
step 1 pre-reading
1.let ss look at the following picture and find out the difference between the modern farming and traditional farming---- let ss find out the advantages and disadvantages of each ways and fill in the table.
(slide show)
raising chickens
small scale large scale
…
horsepower
animals (buffalo; also ox) machines (tractor )
… …
climate control
open air greenhouse
… …
2. group work: get ss work in pair and discuss the question---what other changes have happened on farms in the last 100 years?
3. t sum up in a few words: “ with the development of the new technique, the agricultural production has increased. the farmers can use chemical fertilization to make crop stronger and better and they can use advanced machines to irrigate or cultivate the farmland. ”
step ii. reading
1.skimming
① t: “ what’s the title of the reading passage? ”
ss: “modern agriculture”
t: “ what does it mean in chinese? ”
ss: “現(xiàn)代農(nóng)業(yè)”
t: “ how to say ‘傳統(tǒng)農(nóng)業(yè)’in english ? ”
ss: “ traditional agriculture. ”
t: “ can you imagine what traditional agriculture is like? ”
ss: …
② let ss read the text firstly and answer the following questions:
how much land can be used for faming in china?
(seven percent of the land.)
what is the advantage and disadvantage of chemical fertilization?
(it helps to produce better crops. but is harmful to the environment.)
what is the biggest problem of chinese farmers?
(the shortage of arable land.)
2. skipping
let ss read the passage for the second time and answer two questions:
what does “gm” stand for?
(“g” stands for “genetically” from the word “genes”. “m” stands for “modified”, which means “changed”.)
what is the advantage of tomatoes which were using technique known as “gm”?
(the tomatoes are bigger and healthier. they can grow without danger from diseases. they also need much less time to get ripe.)
3. intensive reading
let ss read the passage and fill in the table: (slide show)