“水循環(huán)”雙語(yǔ)教學(xué)案例

【中圖分類號(hào)】G424 【文獻(xiàn)標(biāo)識(shí)碼】B【文章編號(hào)】2095-3089（2012）21-0262-01

教學(xué)目標(biāo)

讓學(xué)生掌握水循環(huán)環(huán)節(jié)：evaporation， evapotranspiration，sublimation， precipitation， water vapor transport，condensation，freshwater storage，infitration。

了解人類對(duì)水循環(huán)的影響，幫助學(xué)生樹(shù)立正確的人地觀和科學(xué)發(fā)展觀。

教學(xué)方法

從一個(gè)小水滴的旅行說(shuō)起，引出水循環(huán)的各個(gè)環(huán)節(jié)，通過(guò)學(xué)生活動(dòng)學(xué)習(xí)水循環(huán)環(huán)節(jié)。然后讓學(xué)生通過(guò)身邊生活入手，觀看國(guó)際、國(guó)內(nèi)相關(guān)的對(duì)水循環(huán)環(huán)節(jié)特別是地表徑流的影響的視頻，引起學(xué)生反思，回憶那一個(gè)小水滴旅行過(guò)程，認(rèn)識(shí)水資源的重要性，并從身邊生活中去注意。

教學(xué)過(guò)程

觀看：A drop of water

First of all， let's watch a video， please watch it carefully 。It descripes the process of the water cycle simply， then write a passage about it to describe the process of the water cycle.

板書(shū)：I am a small drop of water，living in the sea，and liking to travel everywhere。

旁白：OK， some students have already finished， let's enjoy theirs together.......who would like to write that on the board？

請(qǐng)學(xué)生在觀看完視頻后，接著開(kāi)頭往下寫。用盡可能通俗易懂的話來(lái)表述。

學(xué)生甲：In the heat of the sun ，Unknowingly my body becomes lighter； As water vapour rises， clouds form in the air. When the clouds rise high， they get cool。 A new travel start， I walk through sea， and over the mountains，There are always new friends to join our ranks。Look：They come from rivers 、 lakes， and forest 。the team is more and more large， and my body grow more and more heavy . one day ， I could not fly up ，So We fall from the sky， Some fell on the fields，some float into the rivers and lakes， while others went into the forest bushes and some got into the mud underground...

橫線部分由學(xué)生乙補(bǔ)充。

（展示圖片the water cycle）can you see the picture？

[1]

請(qǐng)學(xué)生根據(jù)圖示，用圖片上出現(xiàn)的單詞或詞組，用不同顏色的粉筆在學(xué)生寫出的那段話中標(biāo)出，那一句話表示哪一個(gè)水循環(huán)環(huán)節(jié)。Watch me first。 Do it like this。教師用紅色的粉筆在As water vapour rises， clouds form in the air. When the clouds rise high， they get cool下劃線，并打了個(gè)箭頭，寫上evaporation（蒸發(fā)）。

學(xué)生不斷的補(bǔ)充并最后完成，及時(shí)給予學(xué)生鼓勵(lì)，說(shuō)著Keep on trying，good， right ，fine ，that’s the way， that’s it， that’s just what I was looking for等肯定的話。

讓學(xué)生猜出單詞、詞組的意思，帶領(lǐng)學(xué)生一起朗讀一遍。給予肯定：You read quite well.

Water is very good for us humans， So， how do we humans treat the little droplets of water， Please look at the video on CCTV9：water pollution（看視頻cctv9 ：water pollution），What do you want to say when you see these？ Who wants to try？

學(xué)生乙：From the video， We found that human pollute and waste the water very seriously. And also led to our lives， the production of some of the problems.

學(xué)生丙：The water is become worse and worse， and we can see water pollution everywhere. Many factories pull the dirty water into rivers， and throw rubbish into the rivers， So we can't find any clean rivers anymore。

從視頻中，我們發(fā)現(xiàn)，人類對(duì)水的污染、浪費(fèi)等非常嚴(yán)重，并且也導(dǎo)致了我們生活、生產(chǎn)中的一些問(wèn)題。如果某一天，水不再愛(ài)我們，看視頻：for love of water

I see this small. If one day， the water no longer loves us. LOOK at the video ： for love of water，Who wants to try？ in English， please.

學(xué)生丁：……（教師及時(shí)的鼓勵(lì)Take it easy， there’s no hurry.） If we lose the love of the water， our homes may be flooded， faced with drought， the face of war， even drinking water may become a problem .

學(xué)生戊：Of course， we are fortunate that humans have already awared this problem. On the video ，（教師及時(shí)的鼓勵(lì)Now you have it. Way to go.keep it up . You’ve improved no end）we leant the international constant through meetings， consultations， an internationally renowned people constantly call to save water So， can we do anything for the water？

可見(jiàn)，如果沒(méi)有水的愛(ài)，我們的家園可能被淹沒(méi)，面臨干旱，面對(duì)戰(zhàn)爭(zhēng)，喝水都可能成為問(wèn)題。

當(dāng)然，我們慶幸的是，人類已經(jīng)知道這個(gè)問(wèn)題，在視頻中，可以看到，國(guó)際上，正不斷的通過(guò)開(kāi)會(huì)、協(xié)商，國(guó)際知名人物不斷的呼吁節(jié)約水資源。那么，我們是不是也可以為水做點(diǎn)什么呢？

Water is very precious to our human beings. We need water everywhere in our life. 同學(xué)們通過(guò)本節(jié)課的學(xué)習(xí)，有什么感悟或體會(huì)？

學(xué)生己：We can do many things in our daily life to save water.Firstly，make sure we can turn off the tap in time

學(xué)生庚：We can reuse the water after we finish washing. we can also use the rain water to do the washing.

……

小結(jié)：As you said that，water is important for us， we must drink water everyday， we should try our best to stop these behaviors. We should do from small things， to protect our water。

The United Nations General Assembly adopted resolution A/RES/47/193 of 22 December 1992 by which 22 March of each year was declared World Day for Water， to be observed starting in 1993， in conformity with the recommendations of the United Nations Conference on Environment and Development （UNCED） contained in Chapter 18 （Fresh Water Resources） of Agenda 21.[2]

we were able to empower thousands of people around the world to obtain clean water and sanitation over the past twelve months. Here’s to a new year filled with health， happiness and clean water for all！

體會(huì)和反思：

本節(jié)內(nèi)容離學(xué)生生活較近，充分的挖掘?qū)W生身邊的資源，并利用活撥生動(dòng)的視頻，讓學(xué)生在視覺(jué)沖擊下，讓學(xué)生調(diào)動(dòng)已有的知識(shí)和生活經(jīng)驗(yàn)，對(duì)水循環(huán)環(huán)節(jié)有較好的認(rèn)識(shí)，然后在圖片的指導(dǎo)下，能夠進(jìn)一步了解水循環(huán)環(huán)節(jié)和學(xué)習(xí)新單詞。

學(xué)生的表現(xiàn)非常優(yōu)秀，我感受到了他們的青春活力和想象力，我深深感到要讓學(xué)生喜歡上本學(xué)科，需要教師充分開(kāi)發(fā)一些與學(xué)生生活密切相關(guān)，適合學(xué)生心理的內(nèi)容，根據(jù)學(xué)生心理最近發(fā)展區(qū)來(lái)展開(kāi)。

不足之處：我校雙語(yǔ)教學(xué)借助市雙語(yǔ)協(xié)會(huì)這個(gè)平臺(tái)，但平時(shí)開(kāi)展的較少，仍然處于起步階段，學(xué)生接觸的較少，非英語(yǔ)學(xué)科的教師平時(shí)接觸的英語(yǔ)較少，我就在課堂過(guò)程中，在面對(duì)學(xué)生的回答過(guò)程中，有時(shí)會(huì)忘詞。學(xué)生平時(shí)講的也較少，開(kāi)始時(shí)有點(diǎn)羞澀。

參考文獻(xiàn)

[1] http：//svr225.stepx.com：3388/water

[2] http：//www.unesco.org/new/en/natural-sciences/environment/water/ihp/water-centres/