Unit 5 Look into Science-Lesson 26 Keep the Candle Burning-ppt课件-(含教案+素材)-市级公开课-冀教版九年级全一册英语(编号：10bac).zip

课堂测试题一、改错题。1. There are lots of matchs in the small box.2. Can you let my uncle laughing?3. Youre very ill, so you must stop to smoke.4. Fill the dish half fill of water.5. There is about onefive oxygen in the air.6. There are about twothird students in the classroom.7. I used out my money. Can you lend me some?二、用所给单词的正确形式填空。1. You are very tired. Youd better stop _ (have) a rest.2. What do you use to make a candle _ (burn)?3. You should put the jar over the candle _ (careful).4. What _ (observe) can you make?5. Please cut the apple into _ (half).6. He _ (light) a candle and the room was bright.7. _ (two), ask the students to guess what will happen.8. He kept the candle _ (burn) for two hours.9. Its time _ (play) basketball.10. What about _ (go) for a walk?Welcometomyclass!What is happening ?The force of the air keeps the water in the jar. We have discovered that the air pressure helps the cardboard hold the water in the jar.Warming-upToday we are going to look into science again and learn to do another experiment. What experiment will we do?Keep the Candle Burning!MadebySuYapingLesson 26Keep the Candle BurningLearningaimsandimportantpointsLearningAims1.KnowledgeAims:Masterthewordsandphrasesinthislesson2.AbilityAims:Learnhowtodescribethescienceexperiments3.EmotionAims:LeadSstobeinterestedinscienceresearchLearningImportantPoints:Describe(描述)andexplain（解释）theexperimentinEnglisha candle a candle holder a big glass jar a shallow dish with water matches oxygen What do we need?1. Put the candle in the candle holder.2. Put the candle holder in the dish.4. Light the candle. How do we do the experiment?观察领悟3. Fill the dish half full with water.5. Let the candle burn for two or three minutes.6. Carefully put the jar over the candle until the top of the jar rests on the dish.7. Look at the water in the jar. 观察领悟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 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. 1.Whatmakesthecandleburn?Oxygen.make/letsth./sb.do使某物/某做.Eg:Letthecandle_(burn)fortwoorthreeminutes.Imakethestudent_(go)out.课内探究burn go 2.Whydidthecandlestopburning?Isthereanyoxygeninthejar?Becauseithasusedalltheoxygenintheair.No,thereisnt.useupeatupdrinkupEg:Ihave_thewaterinthebottle.Hehas_thebread.Shehas_thewater.课 内 探 究used up eaten updrunk up What is happening?阅读共品Listen to the tape .Then read “what is happening “in the text and think about the following questions.1.How far did the water rise? 2. Why does the water fill about one fifth of the jar? One fifth.12151314341.Howfardidthewaterrise?口诀：分子基数，分母序，分子 1 ,分母加 Sthree fourths three quartersone (a) quarter one fourthone thirda (one) half one second (one-second)总结提高2.Whydoesthewaterfillaboutonefifthofthejar?Becauseaboutonefifthofthejarismadeupofoxygen.拓展延伸What does this experiment show about air?It proved (证明)that there is _ oxygen in the air.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 lend me some?Correct the mistakes.matcheslaughone-fifthtwo-thirdsup Summary (1) New words: match, light, burn, shallow, candleholder, oxygen(2) Phrases: use up, one-fifth(3) Sentences: Fill the dish half full of water. As the candle burns, it uses up oxygen in the air.(1) Hom ework1. Do and describe this experiment to your family.2. Write the experiment that you have learned in this unit. Summary and Homework:第 1 页 共 8 页Lesson 26:Keep the Candle Burning! 教学设计教学设计一一 教学内容分析：教学内容分析：Lesson26:Keep the candle burning是冀教版九年级第五单元的阅读课，本单元的重点话题为 Look into science!功能意念为 Certainty and Uncertainty, Sequence.本节课以一个有趣的实验为主线，既渗透了有趣的科学知识，更对用英语来有次序的表达实验过程是一个很好的练习。所以本节课在本单元来说尤其重要。二二 学生情况分析：学生情况分析：本班学生性格有点内敛，但他们对我有强烈的感情，更对英语有着强烈的求知欲和好奇心，以及他们在活动中乐于表现自己，并有很强的集体观念等特点，本节课我设计了一系列的教学活动，激发和培养学生的学习兴趣，鼓励学生大胆实践，勇于探索，热爱科学。三三 教学目标分析教学目标分析本节课以“How much oxygen is there in the air?”为主题进行展开，从实验的材料，到实验步骤，再到实验结论，环环相扣，层次显明。针对本节课的实际内容，结合本单元的重点话题，因此确定本课的三维目标为：1 知识与技能：掌握单词 match, light, burn,短语 use up，并学会用英语描述和解释这个实验。2 过程与方法：通过实物，动作，语境中体会，实验操作来完成。3 情感态度与价值观：培养学生，热爱科学的精神。第 2 页 共 8 页四四 教学重点、难点分析教学重点、难点分析 教学重点：本课的重点为四会单词（match, light, burn, use up,)及用英语描述实验过程，通过听，读，反复呈现，实验操作来突出重点。 教学难点：Describe and explain the experiment in English.通过示范，实验操作来突破难点。五五 教学过程设计教学过程设计步骤一：Class Opening.1. Lead-in. Show the picture - the air pressure helps the cardboard hold the water in the jar and ask: What is happening? (The force of the air keeps the water in the jar.) Science is so interesting . Today we are going to look into science again and learn to do another experiment. What experiment will we do? Well learn Lesson26: Keep the candle burning!2. Learning aims. Show the learning goals and Let the students know what they will learn.(1) New words: match, light, burn, shallow, candleholder, oxygen(2) Phrases: use up, one-fifth(3) Sentences: Fill the dish half full of water.第 3 页 共 8 页 As the candle burns, it uses up oxygen in the air. There is about one-fifth oxygen in the air, so the water rises and fills about one-fifth of the jar.(4) Describe and explain the experiment in English. 设计意图：用图片直接导入课题，形象直观，言简意赅。目标出示，让学生对本节课要学的内容整体感知并做到心中有数。步骤二：New words.1. Teach the new words（match , candleholder） with the real objects. Light the Lighter to teach “light”,and let the candle burn to teach “burn”.2. Read and remember the new words.3. Exercises: (1) 英汉互译。_ 用光 _ one-fifth_ 一个装水的浅盘子 _ stop burning (2) 用所给词的适当形式填空。 Keep the candles _(burn). Mother_(light) a candle and the room was bright. Please cut the apple into_(half).第 4 页 共 8 页 Please pass me a box of_(match). 设计意图：用实物火柴，烛台教授 match, candleholder，用动作点燃，蜡烛燃烧教授 light, burn,并利用一个空火柴盒来教授 use up 等能在学生头脑形成一个深刻的印象，并及时读，记忆，习题巩固。步骤三：Learn the text and do the experiment.1. Watch , Say and Fill.How much oxygen is there in the air? Do you know? Lets do the experiment.(1)What do we need?We need a candle, a candleholder, a big glass jar, a shallow dish with water and matches(or lighters)(2)What do we do?First, _the candle _the candleholder.Then, _the candleholder _the dish.Third, _the dish _water .Fourth, _the candle .Fifth, _the candle _for two minutes .2.Imagine and predict.If I put the jar over the candle until the top of the jar 第 5 页 共 8 页rests on the dish, what will happen? Im not sure /Im sure it will+v I think. Maybe.3. Do, Observe and answer.Sixth , carefully put the jar over the candle until the top of the jar rests on the dish.What observation can you make?(The candle stops burning. The water rises up.)设计意图：教师示范实验，教师描述实验过程，让学生熟悉实验流程，并让学生在听的过程中填出关键词，为下一步的做实验作好基础。并猜测会发生什么？体现单元功能 certainty and uncertainty。步骤四： Listen, read and think. Why did the candle stop burning?( Because it has_ the oxygen in the air and there is_ oxygen in the jar.) use up 用完，用光 Why did the water rise? (Because the force outside the jar is _ than the force inside the jar.)第 6 页 共 8 页How far did the water rise? Why?(Because there is about _oxygen in the air, so the water rises and fills about _of the jar.) One-fifth 五分之一 （分子基，分母序，分子大于一，分母加“s”.）What does this experiment show about air?It proved that there is _oxygen in the air.步骤五：Correct the mistakes.1. There are lots of matches 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 lend me some?设计意图：及时对本节课的重点四会单词和短语进行检测，以达到巩固的效果。步骤六：Summary.1. Can you read the new words? 火柴 点燃 燃烧 烛台 浅的 氧气 2. Can you use the phrases correctly? use up, one-fifth, 第 7 页 共 8 页3. Do you know the sentences? Fill the dish half full of water. As the candle burns, it uses up oxygen in the air. There is about one-fifth oxygen in the air, so the water rises and fills about one-fifth of the jar.4. Can you describe and explain the experiment in English?5. Teachers words: Science is so interesting and weird! We love science. Study hard, you will be a scientist someday! If you think you can ,you can! you can!设计意图：总结让知识条理化，并对学生进行情感教育。步骤七：Homework.1. Do and describe this experiment to your family.2. Write the experiment that you have learned in this unit.设计意图：把实验做并用英语描述给家人，再把本单元的你学过的实验写下来，即有口语练习又是对本单元的一次小练笔，高效实用。步骤八：板书设计 第 8 页 共 8 页Lesson 26:Keep the Candle Burning!match- matches First, _the candle _the candleholder.light-lighted Then, _the candleholder _the dish.burn burnt burnt Third, _the dish _water .use up Fourth, _the candle .one-fifth 五分之一 Fifth, _the candle _for two minutes