2019屆高三英語the wonders of dolphins教案
what's killing the dolphins?
reclamation construction of the new airport at chep lap kok and the north lantau expressway have destroyed pristine natural coast and shallow marine habitat. more dolphin habitat will disappear when container terminals are built on reclaimed land at yam o and lung kwu tan, both areas frequented by the dolphins. contaminated mud from reclamation is dumped in the seabed just north of the new airport platform.
sewage some 150,000 cubic meters of raw sewage (screened, not treated), is dumped into the western harbor area every day. this is scheduled to 700,000 cubic meters a day by the year . sewage includes household toxic wastes such as cleaning fluids, bacteria, and viruses that can affect the dolphins directly, and industrial effluent.
organochlorines ddt (a pesticide still used in china) and pcbs (used in the electronics industry) from unidentified sources have been found in tissue samples from the dolphins in very high concentrations.
over-fishing hong kong's increasingly sophisticated and virtually unregulated fishing fleet is depleting the dolphins' food supply. hong kong's fish catch peaked in 1989. several dead dolphins have show signs of having been caught and/or tangled in fishing nets.
boat traffic while dolphins are usually adept at sensing and staying out of the way of boats, some show signs of collisions. the urmston road shipping channel, with up to 70 vessels an hour, passes right through areas where dolphins are frequently spotted.
活動二：
說明：
高中英語的課堂教學(xué)強調(diào)的是學(xué)生對語言的整合運用和充分體現(xiàn)語言的交際功能，所以教師設(shè)計的教學(xué)活動應(yīng)該一層深于一層。活動策劃給了學(xué)生最大程度運用語言的空間，從語言注釋輸入過度到語言交際輸出，以幫助學(xué)生習(xí)得運用所學(xué)語言知識的能力，完成由學(xué)習(xí)知識向習(xí)得能力的轉(zhuǎn)化。同時在合作中增強學(xué)生的凝聚力。
1. 結(jié)合之前的閱讀材料和小組討論內(nèi)容，起草一份“保護海豚“的倡議書。
2. 教師將整個班級分為幾個小組，每一組中確定“記錄者”和“匯報者”，并明確職責(zé)。
3. 先給每一小組看一篇例文作為閱讀材料，要求學(xué)生快速瀏覽以尋找倡議書的相關(guān)句型和詞匯。然后組員間可以就成立這個組織的目的，為解決問題所進行的措施等等進行討論，時間控制在10分鐘以內(nèi)。
4. 每個小組合作完成自己的宣傳方案，并由匯報者向全班做一次模擬演講。
參考例文：
idw founded 1978
mission statement
a non profit organisation for the observation, conservation and study of dolphins - especially their relationship with humans.
aims and values
to make sure the seas and rivers are clean, healthy and productive for the benefit of both humans and dolphins. to respect the rights of dolphins to a free life in their natural environment. to recognise that since earliest times, dolphins have had an affinity with humans and allow this to evolve.