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,preitsa labapparatus (仪器仪器) a scientific experiment carrying out （操作）（操作） an experiment successfullybalancetest tube holder试管夹试管夹test tube试管试管crucible坩埚坩埚glass rod rd玻璃棒玻璃棒beakerbi:k 烧杯Bunsen burner本生灯本生灯/煤气加热灯煤气加热灯 tongstz钳子钳子tju:b kru:sbl alcohol burnerCarry out an experiment successfully. Its interesting to do an experiment. But weve got a lot of things to do before an experiment. First, we should be clear the aim of the experiment, the apparatus we need and how we can carry it out ( we call it “method”). We watch whats happening and get the result. Lastly it is important to have a discussion on the result of the experiment. Dont forget to write down the conclusion.What is the correct order to carry out a scientific experiment?aimmethodresultconclusionapparatus conclusion apparatus aim result method Can we put iron nails (铁钉)in ordinary water? A Simple Scientific ExperimentBelow is a description of a simple scientific experiment. It shows us how iron reacts with air and with water. : To find out if iron rusts (a) in dry air; (b) in water that has no air in it (air-free water); (c) in ordinary water. : 3 clean iron nails: test tubes; test tube holder; cotton wool; oil; Bunsen burner.Iron in dry air Method 1)Put some iron nails at the bottom of a test tube. 2)Push some cotton wool down the tube. 3)Leave the tube for one week. Result After one week, the mails have not rusted. Conclusion Iron does not rust in dry air. 3. _ Method 1)Half-fill a test tube with water. 2)Boil the water for three minutes.(This makes sure there is no air in the water.) 3)Put two or three clean nails in the water. 4)Add some oil to the water. This will keep air out of the water. 5)Leave the tube for one week. Result The nails do not rust in the tube with air-free water. Conclusion Iron does not rust in air-free water. 4. _ Method 1) Half-fill a test tube with water and add two or three clean nails. 2)Leave the tube for one week. Result The nails rust in the tube with ordinary water. 5. _ Iron rusts in ordinary water. A. Conclusion; B. Iron in air-free water; C. Method; D. Result; E, Iron in ordinary water; F. Apparatus; G. Aim Read the passage and complete the table.cottonwoolnailsIron does not rust.waterIron doesnot rust.waterwaterIron rusts.1.what is the aim of the experiment?A. to find out if iron rusts in dry airB. to find out if iron rusts in water that has no airC. to find out if iron rusts in ordinary waterD. all of the above.2.what does the word “half-fill” mean in paragraph 5?A. include something B. mix with a liquidC. cook something in boiling water D. make something half full v3.Which of the following statement is true?The oil can keep air out of water.The _ of this experiment is to discover if iron _ (rust) in dry air and in ordinary water. _ (carry) out the experiment, you need the following _ : clean iron nails, two test tubes and some cotton wool. A simple Scientific Experiment The aim / purpose of this experiment is to find out whether- To carry out the experiment properly, you need the following things: -. The steps are as follows. First put -. Next, -. And then, -. Finally you can see- Therefore, we can draw / reach / arrive at the conclusion that - A simple Scientific Experiment The aim / purpose of this experiment is to find out whether iron rusts in air-free water. To carry out the experiment properly, you need the following things: iron nails, test tubes, oil, tube holders. The steps are as follows. First, half-fill a test tube with water and boil the water for three minutes. Next, put two clean nails in the water. And then, add some oil to the water and leave the tube for one week. Finally, you can see the nails do not rust in the tube with air-free water. Therefore, we can draw / reach / arrive at the conclusion that iron does not rust in air-free water.Assignment1. Retell one of the experiments. 1. Add some oil to the water 往往水里水里加入一些油加入一些油 Please add some sugar to the bread. 请在面包上加些糖。请在面包上加些糖。Add some salt to the soup please. 请往汤里加些盐。请往汤里加些盐。Shall I add your name to the list.？我可以把你的名字加进名单吗？我可以把你的名字加进名单吗？A new wing was added to the building. 这栋大楼新添了一座配楼。这栋大楼新添了一座配楼。【句型仿写句型仿写】Add these figures up and see what the total is. 把这些数字加起来，看看总数是多少。把这些数字加起来，看看总数是多少。The costs added up to 10 million American dollars. 费用总计达费用总计达1，000万美元。万美元。Fireworks added to the attraction of the festival night. 烟花使节日之夜更具有吸引力。烟花使节日之夜更具有吸引力。【拓展拓展】【归纳归纳】 _ 增加；增添增加；增添_ 把把加起来加起来_ 总计，共达总计，共达【助记助记】 巧记巧记add短语短语add toadd upadd up to2.This will keep air out of the water不让不让进入；使进入；使避开避开, 使不卷入某事使不卷入某事She wore a hat to keep the sun out of her eyes. 她戴着帽子遮阳她戴着帽子遮阳, 保护眼睛。保护眼睛。keep the baby out of the sun .别让孩子晒着。别让孩子晒着。 Keep that dog out of my bedroom please.请不要让那狗进我的卧室。请不要让那狗进我的卧室。 I advise all of you to keep out of the matter. 我劝你们大家都不要介入此事。我劝你们大家都不要介入此事。【句型仿写句型仿写】【拓展拓展】补全下列补全下列“keep”短语短语keep(sb. /sth.)_ _ sb. /sth. keep(sb. /sth.) _ sb. /sth. (使某人使某人/物物)远离某人远离某人/物物keep sth. _ 阻止；隐瞒阻止；隐瞒keep on doingkeep _ 持续持续keep _ _ 跟上；与跟上；与保持联系保持联系away fromoffbackupupwith【高考链接高考链接】(2012湖北高考湖北高考)Walking alone in the dark, the boy whistled to _ his courage. A. hold up B. keep upC. set up D. take up【解析解析】选选B。考查动词短语辨析。句意：独自一人在黑暗中。考查动词短语辨析。句意：独自一人在黑暗中走走, 那个男孩吹口哨给自己打气。那个男孩吹口哨给自己打气。hold up举起，耽搁，延迟；举起，耽搁，延迟；keep up保持，维持；保持，维持；set up建造，创立；建造，创立；take up占据，开始占据，开始从事。从事。keep up ones courage 保持勇气，鼓起勇气。保持勇气，鼓起勇气。
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