新冀教版九年级全一册英语 Lesson 26 教案

1、Un i t 5 Look i nto Sc i enceLesson 26 Keep the CandIe Burning知识目标单词regret, examination, pain, wake up, get dressed, get词组keep.burning, use up, one-fifth句型Let the candle burn for two or three minutes.When the candle stops burning, it has used up all the oxygen in the air.Because about one fifth of t

2、he air is made up of oxygen, the water rises and fills about one fifth of the jar. How far does it rise?技能目标能听懂本课时的听力材料，能说出本课时的重 要句型，能运用句式用英语谈论学习方法掌握文中重点短语和句型。能够熟练记忆、使用match, use up等单词和短语。Step 1 ： Warming upWhafs this? (Its a candle.)Yes, its a burning candle. We will have an interesting class. Can

3、you guess what we will do in this class? There are some things that may be used in an experiment. Do you want to know what will happen? Today we?ll learnLesson 26： Keep the Candle Burning.设计意图：利用带来的教具，凭着学生对科学强烈的求知欲和好奇心，学习本 课的新词，并鼓励他们表述实验。Step 2： Presentation1 .Watch, Say and Fill(l)What do we need?W

4、e need a candle, a candle holder, a big glass jar, a shallow dish, some water and a lighter.(2)What do we do?First, the candle the candle holder.Then the candle holder the dish.Third the dish water.Fourth, the candle.Fifth, the candle for two minutes.magine and PredictIf I put the jar over the candl

5、e until the top of the jar rests on the dish, what will happen?Im not sure./Um sure it will.I think. Maybe.Do, Observe and AnswerPut the jar over the candle carefully until the top of the jar rests on the dish.(The candle stops burning. The water rises up.).Then do Exercises 1 and 2 on Page 69设计意图：教

6、师示范实验，同时描述实验过程，让学生熟悉实验流程，并让学 生在听的过程中填出关键词，为下一步做实验做好基础，并讨论会发生什么。表达本单元主题Talking About ScienceoStep 3 ： Listen, read and think.Why did the candle stop burning?Because it has the oxygen in the air.(used up).Why did the water rise?Because the force outside the jar is than the force inside the jar.(strong

7、er).How far did the water rise?Because there is about oxygen in the jar, so the water rises and fills aboutof the jar.(one fifth, one fifth)Step 4： Project.Do the experiment in groupsRead about the experiment in this lesson. With a group of classmates, practice the experiment. Do your experiment in

8、front of the class. Dont forget the following things：First, describe your experiment.Second, ask the class what they think will happen.Third, do the experiment.Finally, ask the class if the result is what they expected.组长分配任务，一人写实验报告，一人做实验，其他人用英语描述实验过程， 必须用英语描述，否那么实验为失败，小组间比赛，实验成功且完成快的组，获 得一颗星奖励。.Wr

9、ite the experiment reportStep 5 ： Explain the language notes of the text to the class.Keep the candle burning!让蜡烛燃烧！keep. burning使燃烧。keep sth.(sb.)doing使某物(某人)保持做某一动作状TqX o.useup用光，耗尽。表示完全，彻底。3.one-fifth五分之分数的表达：分数由分子及分母两局部构成。用英语表达时，分子用基数形式，分母用序数 词形式。假设分子为1时，那么分母的序数词为单数形式；假设分子大于1时，那么分 母的序数词用复数形式。如：1/3, one third,三分之一；1/5, one fifth,五分之一；3/4, three fourths, 四分之三；2/5, two fifths,五分之二Jim all his money to buy the puter.A fixed upB . used upC. ate upD. GotHave you finished the work?一Not yet, but no matter how hard it is,well keep untilwe finishit.A.