B1M5.Period 2.ppt

Period 2,Module 5 A Lesson in a Lab,Reading and Vocabulary Cultural Corner,What words can you think of when looking at the picture?,science scientific experiment apparatus 器械、设备、 仪器 test tube tube holder Bunsen burner,This is a _ _ done in a lab. First, get all the _ ready on the desk, a container(容器) with some cold water in it, some potassium(钾) and a spoon. Secondly, _ some potassium into the water. Then a strong light will be seen, and it lasts for a while. We can reach a _ that potassium _ with cold water.,scientific experiment,apparatuses,pour,conclusion,reacts,What do they have in common?,Answer:,They are made of metal.,potassium,sodium,calcium,magnesium,aluminium,zinc,iron,copper,Read Passage A and choose the best title for it.,The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen,Detailed Reading,Qs: What should we know when we use metals? Which metal reacts most with water, potassium or iron?,It is important to know how they react with different substances.,Potassium reacts most with water.,Work in groups of four.,Which metals react the most with oxygen and water? What happens when you heat calcium in oxygen? Which metals react with steam? Does iron have a slow or fast reaction with steam? Does copper react with water?,Potassium.,It burns to form an oxide.,Magnesium, aluminium, zinc.,Slow.,No, it doesnt.,Passage B Q: Can we put nails in wet air?,Put the words in the right place of the experiment report.,An Experiment Report 1. _: 2. _: 3. _: (1) (2) (3) 4. _: 5. _:,conclusion method result aim apparatus,Aim,Apparatus,Method,Result,Conclusion,True or false,Iron rusts easily in dry air. To make sure theres no air in the water, you have to boil the water for 3 minutes. We dont know whether iron rusts in ordinary water.,F,T,F,Fill in the form below.,To find out if.,iron nails test tubes oil tube holders cotton wool Bunsen burner,After a week, rust,( not ) rust in,In the first part of the experiment, the _ is dry. It shows that iron _ in dry air. In the second part, you must _ the water to _ _ that there is no air in it. _ some oil to the water can _ the air out of it. It shows that _ dont rust in _ water. In the third part, _ the tube with water. It shows that they rust in _ water.,air,doesnt rust,boil,make sure,Adding,keep,nails,air-free,half-fill,ordinary,Homework (Cultural Corner),Read the passage in Cultural Corner. Answer the two questions.,附（language points),Leave the tube for one week. Leave表示“放置，使处于某种状态”。如： Leave the child as he is. Who left the lights on? Leave a basin of water outside in the freezing water, and it will soon freeze.,Period 3,Module 5 A Lesson in a Lab,Listening and Vocabulary Pronunciation Everyday English Function,Listening and writing (P46): You will hear a conversation. Can you predict the result according to the aim?,AIM: To find out if there is a change in weight when the metal magnesium burns in air. RESULT:_ _,Listen to the conversation.,After the 1st listening, check whether your prediction for activity 1 is correct. Listen again and complete the description of the scientific experiment in Part 3. Now check the answers with your partner.,Part 3 (P47),Pronunciation (P48): Does the voice go up or down at the end?,How much do we need? What about this piece? Is this piece OK? Where do we go from here? Do you want me to write that down?,Wh- questions often fall at the end. Yes/No questions often rise.,(2) Now listen again and repeat, using the correct intonation.,Conclusion:,Complete the conversations,1. -_? - Lets put this piece of metal in the test tube. 2. -So you mean the earth is 49 times as big as the moon, dont you? -Yes, _. 3. -_. The babys sleeping. -OK, I will. 4. Well, Ive finished my work. -So _ now.,Where do we go from here,youve got it,Keep the noise down,its my turn,Function(10m),(1) Look at the words in italics. When do we use them?,We use them to indicate the stages of a process.,Homework,Write a report of an experiment that you are familiar with, using what weve learnt in todays lesson.,Period 4,Module 5 A Lesson in a Lab,Grammar 1 Grammar 2,Write sentences according to what you see.,The earth is 49 times _ _ the moon. OR: The earth is 49 times _ _ _ the moon.,larger than,as large as,Grammar 1 Degrees of comparison (1),1. What is wrong with the sentence? I went there two times. 2. If object A is 10 metres long, and object B is twice as long as object A, how long is object B? 3. If object A weighs 100 kilogrammes and object B is four times heavier, how heavy is object B?,I went there twice.,20 metres long.,400 kilogrammes.,study the sentences and make a conclusion of the comparative structure of adjectives.,The brown houses windows are twice as wide as those of the white house. My handwriting is not half as good as yours. This room is three times as large as that one.,小结: (1) 倍数as形容词as,The white box is four times deeper than the black box. This road is twice longer than that one. The plane flew nine times higher than the kite.,小结: (2) 倍数形容词的比较级than,The red building is twice the height of the grey building. Our school is three times the size of yours. The street is four times the length of that one.,小结: (3) 倍数the size (length, width, height, depth) of,Make sentences about the comparative size of the pairs in Part 2 on Page 43.,Answers:,2. Winter is four times colder in Harbin than in Beijing. Winter is four times as cold in Harbin as in Beijing. 3. Mount Qumolangma is about six times higher than Mount Tai. Mount Qumolangma is about six times as high as Mount Tai.,4. My aunts house is twice as large as my house. My aunts house is twice larger than my house 5. Tom weighs over twice as heavy as Lily. Tom is over twice heavier than Lily.,Complete the sentences according to the chart.,Mars is _ the earth. (big) Jupiter is _from the sun than the earth. (far),half as big as,five times further,Can you write more sentences comparing the planets?,Grammar 2 Degrees of comparison(2),Homework,Find out more names of different equipment used in a science experiment.,Its getting _ and _. (bright) The closer you are, the _ youll see. The more books I read, _ information I learn.,brighter brighter,more,the more,Q: Which indicates something is changing? Which indicates something are changing together? Which structure repeats the same adjectives?,1,2,3,2,3,1,Grammar2,Winter is coming. Its getting colder and colder. The g