学科网,(ZXXK.COM,）,-,网校通名校系列资料,上学科网，下精品资料！,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,学科网,(,ZXXK.COM,）,-,网校通名校系列资料,上学科网，下精品资料,！,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 4 Exploring plants-Writing,课件,Unit 4 Exploring plants-Writin,Look at the pictures in Exercise 1 and guess the answers to the questions:,What materials are being used in this,experiment?,What do you think the purpose of the experiment is?,What order do you think the pictures should go in?,Listening on P79,Look at the pictures in Ex,Number the pictures in the order you hear about them.,2,3,1,5,4,Number the pictures in the ord,Listen to the first part again and answer the questions.,What is the purpose of the experiment?,To find out three important conditions that seeds need in order to start growing.,Listen to the first part a,2.Are students going to do the experiment in groups or individually?,In groups.,3.Where are the materials that the students need to set up the experiment?,On the bench.,2.Are students going to do th,4.What materials do the students need to set up the experiment?,Four dishes and four pieces of cloth,a dish of seeds,some tap water,some boiled water and some cooking oil.,4.What materials do the stude,Third listening,Listen to the first part again and complete the table of conditions that each dish of seeds was given.,Third listening,C,onditions,Dish A,Dish B,Dish C,Dish D,tap water,warm temperature,oxygen,tap water,cold temperature,oxygen,no water,warm temperature,oxygen,boiled water,oil,warm temperature,no oxygen,ConditionsDish ADish BDish CD,Fourth listening,Now listen to the second part of the tape in which the class discusses the results of the experiment.Complete the table of results.,Fourth listening,Did the seeds grow?,Reasons why or why not,Dish A,Dish B,Yes,Because they had water,warmth and,oxygen.,No,Because it was too,cold.,Did the seeds grow?Reasons why,Did the seeds grow?,Reasons why or why not,Dish C,Dish D,No,No,Because they were watered with boiled water which has no oxygen.Also,they were covered with oil which prevented oxygen getting to the seeds.,Because they didnt get any water.,Did the seeds grow?Reasons why,Listen to the second part of the tape again and discuss the question:,What was the conclusion of the experiment?,Seeds need warmth,water and oxygen to grow.,Listen to the second part of t,An experiment on plants,Part1:,Listen to a teacher(TH)helping her class set up an experiment.,TH:,OK,everybody,this morning were going to do an experiment to find out three important conditions that seeds need in order to start growing.,LISTENING TEXT,An experiment on plantsLISTENI,The materials are all on the bench.,Choose someone from your group to go and get four dishes and four pieces of cloth,a dish of seeds,some tap water,some boiled water and some cooking oil.Look at the instructions on the board.Lets read through them.,The materials are all on the b,One:,Put the pieces of cloth on the dishes and spread the seeds on the cloth.Label the dishes A to D.,Two:,Take Dish A and wet the cloth with tap water and place it in a well-aired warm spot so by the window over there would be fine.,Three:,Take Dish B,wet it with tap water and put it in the fridge.,One:Put the pieces of cloth o,Four:,Take Dish C and put it next to Dish A.Do not water it.,Five:,Take Dish D and water it with the boiled water.Then drop a small amount of oil onto the cloth and put it next to Dish C.,Six:,Leave them all for a few days.OK,now you can go ahead and set up,the experiment.,Four:Take Dish C and put it n,Part 2:,Listen to the class discussing the results of the experiment.Students include Andrew(A),Rosemary(R)and Sandy(S).,TH:,Right,lets talk about whats happened in our experiment.What are the results?Andrew?,A:,The seeds in Dish A have started growing but none of the others have.,Part 2:Listen to the class di,TH:,Good.Why do you think the seeds in Dish B didnt grow?Rosemary?,R:,Because it was too cold?,TH:,Thats right.And what about Dish C?,TH:Good.Why do you think the,R:,The seeds didnt get any water so they couldnt grow.,TH:,Yes.Now,Dish D is interesting.The seeds got both water and warmth so why didnt they grow?Any ideas?Andrew?,R:The seeds didnt get any wa,A:,Well,the seeds got boiled water.,TH:,So,whys that important?Anyone?Well,boiled water has no oxygen in it and seeds need oxygen to grow.And What about the oil?Sandy?,S:,Wouldnt the oil make sure that no Oxygen could get to the seeds?,A:Well,the seeds got boiled,TH:,Excellent.Well done.So,whats our co