必修三第四單元閱讀課導(dǎo)學(xué)案

1、unit4：How life began on the earthPeriod 1: Warming up and Reading導(dǎo)學(xué)案 編制人：莫玲玲 審核人：_ 編制時間:2015/ 3 /25【學(xué)習(xí)目標(biāo)】通過本節(jié)課的學(xué)習(xí)，你需要達(dá)到以下目標(biāo) 1. 知識目標(biāo) (1) 掌握以下單詞以及短語 Astronomy, system, religion, theory, atom, billion, globe, violent, carbon, dioxide, atmosphere, unlike, fundamental, harmful, acid, chain, multiply, oxy

2、gen, exist, thus, puzzlein time, carbon dioxide, lay eggs, give birth to, in ones turn, prevent.from (2) 通過本文學(xué)習(xí)，掌握地球生命的起源。2. 能力目標(biāo) (1) 能夠運(yùn)用一定的閱讀技巧,如尋讀, 略讀, 關(guān)鍵詞, 根據(jù)語境猜測詞意等,找到文章的主旨以及文章的細(xì)節(jié)信息. 提高閱讀能力. (2) 能夠用英語談?wù)撚嘘P(guān)天文學(xué)的話題.3. 情感態(tài)度價值觀 通過本文的學(xué)習(xí), 提高環(huán)保意識, 愛護(hù)地球. 【學(xué)習(xí)重點(diǎn)】 掌握地球生命的進(jìn)化過程.【學(xué)習(xí)流程】 自主學(xué)習(xí)： 合作探究： 展示提升：【學(xué)法指導(dǎo)】在

3、學(xué)習(xí)過程中，要在獨(dú)立思考的基礎(chǔ)上，通過小組討論，相互啟發(fā)，共同完成學(xué)習(xí)任務(wù)?！菊n前預(yù)習(xí)】把下列單詞的中文意思寫出來(盡量回憶不看書) astronomy_ atom_ globe_ multiply_ dissolve _ acid_ atmosphere_ carbon_ dioxide_ nitrogen _ oxygen_ shellfish_insect_ amphibian_ reptile_ mammal_在書本中找出下列短語 太陽系_ 圍繞著轉(zhuǎn)_ 與匹配_生命的起源_ 的觀點(diǎn)_ 根據(jù)_以開始_ 向各個方向_ 在和之間_最終，及時_ 冷卻，變涼_ 在表面_生命的發(fā)展_ 水的長期存在

4、_ 允許做某事_把溶解在里_ 連鎖反應(yīng)_ 使成為可能_用把填滿_ 也,又_ 第一次_下蛋_ 恐龍時代_ 仍然是個謎_與不同_ 分娩，產(chǎn)生_ 接著，輪到某人_照顧,照看_ 阻止/制止做某事_ 逃出，逃避_因此_ 太以至于_ 依賴, 依靠_【自主學(xué)習(xí)】Task 1:Read the text quickly and match the main idea with each paragraph. Para. 1 The formation (形成) of the earth Para. 2 The importance of water for lifePara. 3 A widely accep

5、ted theory about the formation of the universe.Para. 4 The arrival of humans and their impact on the earth. Para. 5 The development of plants and animals on the earth. Task 2:Listen to the tape carefully and fill in the blanks. TimeWhat happenedBig bang_ began to form and combine to create starsand

6、other bodies.Between 4.5 and 3.8 billion years agoDust settled into a _ and violent globe.The earth exploded to produce its _.The continued _ of water allowed the earth to dissolve harmful gases and _ into the oceans and seas.【合作探究】Task 3:Read para. 4 and 5, put the right order of the development of

7、 life. （ ） Insects and amphibians appeared.（ ） Dinosaurs appeared.（ ） Small plants grew on the water. （ ） Reptiles appeared.（ ） Plants began to grow on dry land.（ ） Shellfish and other fish appeared.（ ） Clever animals with hands and feet appeared.（ ） Mammals appeared.Task 4: Choose the best answer a

8、ccording to the passage 1. Why was the earth different from other planets? A: It produced a lot of heat B:The water remained C:Water disappeared D: It was the oldest planet 2. Why was it necessary for plants to grow before animals?A:Animals needed plants to protect them from the sunB:Plants provided

9、 oxygen for animals to breathe. C:Animals could hide from hunters in forests.D:It was easier for plants to grow. 3. What problem is caused by human beings? A:They exist everywhere on the earth B:They cause global warming C:They find new methods of growing crops D:They enjoy hunting and fishing【展示提升】Task 5: discussion 1. Whats the problem caused by human beings?2. What can we