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Unit5 Macquarie Island:
from Chaos to Conservation教案
Learning objectives（目標）:
1.learn about basic information of Macquarie Island;
2.organize the structure of the passage;
3.find out the detailed information in the passage;
4.raise awareness of environmental protection.
Learning procedures（過程）:
Part I Quiz
decrease _______________ 植被___________________ departure ________________ 棲息地_________________ tackle _________________ 免疫力________________ Intervention_______________ 土壤侵蝕______________ pest-free__________________ 入侵物種_______________ multiply _________________ 結果是________________ chaos __________________ 與 ---和諧共處___________ Conservation_______________
Part II Lead in
Task 1.Look at the picture and answer the questions
1. What animals can you see in the picture
2. What kind of changes would take place if cats, rats and rabbits were introduced to an environment like this
Part III Reading
Task2:
Q1:What’s the meaning of the title
Q2:How many parts does the passage can be divided into
Read for details
Task 3 the Introduction to the island（para 1)
1)Listen to the tape and fill the blanks.
Task4 the chaos of the island（para2-para3）
Read para 2 and complete the mindmap.
Read para 3 and completethe chart.
Task5 the conservation of the island(para4-6)
Read Part 3(para4-6)&postscript, and fill in the blanks.
Read paragraph 6 and answer these questions
What’s the writer’s mission on the island
What do you think is to blame for the chaos in Macquarie Island
3)Retell the measures of conservation according to the mind map
Part IV Group work
Group work: What should we do to protect the ecology
Part V Exercise
Macquarie Island used to be a 1.________(natural) beautiful place but everything changed when humans arrived on the island. They brought rats and mice onto the island, and these small animals quickly took over the island, 2__________(eat) the birds` eggs and attacking baby birds. Cats were brought to the island to control the rats and mice. 3_______________(fortunate), the cats subsequently developed 4_____________ appetite for the birds too. Meanwhile, rabbits 5_________________(introduce) to the island as a source of food for humans, but they multiplied rapidly and began eating the native vegetation and digging holes, 6____________ caused soil erosion.
The exploding rabbit population provided plentiful food for the cats. 7_________ consequence, the number of cats also increased. This in turn led to more cats 8_______________(hunt) the birds. Later, a virus was released onto the island, and the rabbit population decreased. But meanwhile the cats killed more birds for lack of food. In the 1980s, traps and dogs were used 9_____________(catch) the cats, and it worked. With the departure of cats from the island, the mouse and rat population increased again. The rabbits also developed an immunity to the virus, and their number s exploded again. This incident made 10________ clear that the problem needed solving once and for all .
Part VI Homework
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