人教版选修九Unit-4《Exploring-plants--Writing》课件

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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,*,Experiment reports,Writing,Experiment reportsWriting,1,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,2,Number the pictures in the order you hear about them.,2,3,1,5,4,Number the pictures in the ord,3,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,4,2.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,5,4.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,6,Third listening,Listen to the first part again and complete the table of conditions that each dish of seeds was given.,Third listening,7,Conditions,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,8,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,9,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,10,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,11,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,12,Writing task,When writing an experiment report,you can ask questions about:,the position of the headings,what the headings are,their order:,how the items in the“materials”section are presented (as a list);,Writing taskWhen writing an ex,13,what the“procedure”tells you(the steps you carry out to set up the experiment);,the grammatical structures used for each section of the report.,what the“procedure”tells y,14,Outline,Materials:,A,B,C,D,Aim:,To find out three important conditions that seeds need in order to start growing.,1.four dishes,2.four pieces of cloth,Outline Materials:ABCDAim:To,15,4.some tap water,3.some boiled water,5.a dish of seeds,6.some cooking oil,4.some tap water3.some boile,16,Procedure:,Put the pieces of cloth on the dishes.,Spread the seeds on the cloth.Label the,dishes A to D.,2.Take Dish A and wet the cloth with tap water and place it in a well-aired warm spotso by the window over there would be fine.,3.Take Dish B,wet it with tap water and put it in the fridge.,Procedure:Put the pieces of cl,17,4.Take Dish C and put it next to Dish A.,Do not water it.,5.Take Dish D and water it with the boiled water.Then drop a small amount of oil onto the seeds and put it next to Dish C.,6.Leave them all for a few days.,4.Take Dish C and put it next,18,Results,Dish A:,Dish B:,Dish C:,Dish D:,Conclusion,Seeds need warmth,water and oxygen to grow.,The seeds grew.,The seeds didnt grow.,The seeds didnt grow.,The seeds didnt grow.,ResultsDish A:Dish B:Dish C:Di,19,Sample report:,I did the experiment to find out three important conditions that seeds need in order to start growing.,First,I put the four pieces of cloth on each dish,spread the seeds on the cloth and label the dishes A to D.,Sample report:I did the ex,20,Then I placed Dish A in a well-aired warm spot by the window,took Dish B and wet it with tap water,and put it in the fridge,took Dish C and put it next to Dish A without watering it.,Then I placed Dish A in a well,21,Finally I watered Dish D with the boiled water,dropped a small amount of cooking oil onto the seeds and put it next to Dish C.A few days later,I found that only Dish A grew.,So I drew a conclusion that seeds,need warmth,water and oxygen to grow.,Finally I watered Dish D with,22,Discussion:,Look at the pictures of a plant experiment.The pictures are in the correct order.Discuss with partners about the processes the plants go through.Report each picture one by one:,Discussion:Look at the pi,23,Plant three beans in a pot,water them and leave them in a warm,light spot.,Plant three beans in a pot,wa,24,Two small shoots appear.,Two small shoots appear.,25,Cut the ends off a plastic bottle.,Cut the ends off a plastic bot,26,Wrap the bottle in dark paper.,Wrap the bottle in dark paper.,27,Lay the bottle on
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