新冀教版九年級英語上冊第26課課件谷風講課

1、welcome tomy class!1沐風教資沐風教資made by su yapinglesson 26keep the candle burningunit 5 look into science2沐風教資沐風教資 本節(jié)課的主題是本節(jié)課的主題是:科學實驗科學實驗-蠟燭在蠟燭在空氣中燃燒，這是個學生特別感興趣的實空氣中燃燒，這是個學生特別感興趣的實驗，有利于激發(fā)學生學習英語的熱情。在驗，有利于激發(fā)學生學習英語的熱情。在實際的教學活動中，我將和同學們一起動實際的教學活動中，我將和同學們一起動手做實驗，并用英語描述操作過程，真正手做實驗，并用英語描述操作過程，真正做到學以致用。做到學以致用。3

2、沐風教資沐風教資 根據(jù)根據(jù)新英語課程標準新英語課程標準及教材要求，結合學及教材要求，結合學生的實際情況，我將教學目標分為以下幾個方面：生的實際情況，我將教學目標分為以下幾個方面：知識目標知識目標：學生要掌握本節(jié)課中出現(xiàn)的新單學生要掌握本節(jié)課中出現(xiàn)的新單 詞、短語及分數(shù)的英語表達。詞、短語及分數(shù)的英語表達。能力目標能力目標：培養(yǎng)學生聽、說、讀和動手操作能培養(yǎng)學生聽、說、讀和動手操作能 力。力。情感目標情感目標：培養(yǎng)學生學習科學的興趣，激發(fā)學培養(yǎng)學生學習科學的興趣，激發(fā)學 生學習英語的積極性，提高他們的生學習英語的積極性，提高他們的 合作交流能力。合作交流能力。4沐風教資沐風教資 重點：重點： 依

3、據(jù)教學目標及學生的學習依據(jù)教學目標及學生的學習能力，要學生掌握本節(jié)課新學的單詞、能力，要學生掌握本節(jié)課新學的單詞、短語及重要句型。短語及重要句型。 難點：難點：根據(jù)英語描述，學生小組合根據(jù)英語描述，學生小組合作，動手操作實驗，并討論得出科學的作，動手操作實驗，并討論得出科學的實驗結果。實驗結果。5沐風教資沐風教資 為了順利完成教學目標、突出重點、突破難為了順利完成教學目標、突出重點、突破難點，結合學生的認知規(guī)律，我主要采用了圖片展示、點，結合學生的認知規(guī)律，我主要采用了圖片展示、實物演示、合作探究等教學方法。實物演示、合作探究等教學方法。 合理安排教學過程是教學成功的關鍵，針對合理安排教學過程

4、是教學成功的關鍵，針對學生的認知狀況及本課的特點，我設計了以下幾學生的認知狀況及本課的特點，我設計了以下幾個環(huán)節(jié)：個環(huán)節(jié)：6沐風教資沐風教資what is happening ?what is happening ?the force of the air keeps the force of the air keeps the water in the jar. the water in the jar. we have discovered that the air we have discovered that the air pressure helps the cardboard h

5、old the pressure helps the cardboard hold the water in the jar.water in the jar.warming-upwarming-up7沐風教資沐風教資learning aims and important pointslearning aims1.knowledgeaims:masterthewordsandphrasesinthislesson2.abilityaims:learnhowtodescribethescienceexperiments3.emotionaims:leadsstobeinterestedinsci

6、enceresearchlearning important points:describe(描述)andexplain（解釋）theexperimentinenglish8沐風教資沐風教資today we are going to look into science again and learn to do another experiment. what experiment will we do?keep the candle burning!9沐風教資沐風教資a candle a candle holder a big glass jar a shallow dish with wa

7、ter matches oxygen what do we need?10沐風教資沐風教資1.1. put the candle in the candle holder.put the candle in the candle holder.2. put the candle holder in the dish.2. put the candle holder in the dish.4. light the candle.4. light the candle. how do we do the experiment?觀觀察察領領悟悟3. fill the dish half full

8、with water.3. fill the dish half full with water.11沐風教資沐風教資5. let the candle burn for 5. let the candle burn for two or three minutes. two or three minutes.6. 6. carefully put the jar over the candle carefully put the jar over the candle until the top of the jar rests on the until the top of the jar

9、 rests on the dish. dish.7. look at the water 7. look at the water in the jar. in the jar. 觀觀察察領領悟悟12沐風教資沐風教資first， put the candle in the candleholder.second , put the candle holder in the dish.third , fill the dish half full with water.fourth , light the candle.fifth ,let the candle burn for two or

10、 three minutes.sixth , carefully put the jar over the candle until the top of the jar rests on the dish.seventh, look at the water in the jar. 13沐風教資沐風教資 1. what makes the candle burn? oxygen . make/let sth./sb. do 使使某物某物/某做某做.eg: let the candle _(burn) for two or three minutes. i make the student _

11、(go) out.課內探究課內探究burnburn go go 14沐風教資沐風教資2.why did the candle stop burning? is there any oxygen in the jar?because it has used all the oxygen in the air.no ,there isnt. use up eat up drink upeg: i have _ the water in the bottle. he has _ the bread. she has _ the water. 課課 內內 探探 究究used up used up ea

12、ten upeaten updrunk up drunk up 15沐風教資沐風教資what is happening?閱讀共品閱讀共品listen to the tape .then read “what is listen to the tape .then read “what is happening “in the text and think about the happening “in the text and think about the following questions.following questions.1.how far did the water rise

13、? 1.how far did the water rise? 2. why does the water fill about 2. why does the water fill about one fifth of the jar?one fifth of the jar?16沐風教資沐風教資 one fifth. one fifth.1 12 21 15 51 13 31 14 43 34 4口口訣訣： ：分子基數(shù)，分母序，分子分子基數(shù)，分母序，分子 1 ,1 ,分母加分母加 s sthree fourths three quartersthree fourths three quar

14、tersone (a) quarter one fourthone (a) quarter one fourthone thirdone thirda (one) half a (one) half one second (one-second)one second (one-second)總結提高17沐風教資沐風教資2. why does the water fill about one fifth of the jar?because about one fifth of the jaris made up of oxygen. 拓展延伸拓展延伸18沐風教資沐風教資what does th

15、is experiment show about air?it proved (證明證明)that there is _ oxygen in the air.19沐風教資沐風教資1. there are lots of matchs in the small box.2. can you let my uncle laughing?3. there is about onefive oxygen in the air.4. there are about twothird students in the classroom.5. i used out my money. can you len

16、d me some?correct the mistakes.matcheslaughone-fifthtwo-thirdsup20沐風教資沐風教資 summary (1)(1)new words: match, light, burn, shallow, new words: match, light, burn, shallow, candleholder, oxygen candleholder, oxygen(2) phrases: use up, one-fifth(2) phrases: use up, one-fifth(3) sentences:(3) sentences: fill the dish half full of water. fill the dish half full of water. as the candle burns, it uses up oxygen as the candle burns, it uses up oxygen in the air. in the air. hom ework