高中英语 Unit4Exploring plants-Writing课件 新人教选修9.ppt
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1、Experiment reports,Writing,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,Number the pictures in the o
2、rder you hear about them.,2,3,1,5,4,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.,2. Are students going to do the experiment in groups or individually? In groups. 3. Wh
3、ere are the materials that the students need to set up the experiment? On the bench.,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.,Third listening Listen to the first par
4、t again and complete the table of conditions that each dish of seeds was given.,tap water, warm temperature, oxygen,tap water, cold temperature, oxygen,no water, warm temperature, oxygen,boiled water, oil, warm temperature, no oxygen,Fourth listening Now listen to the second part of the tape in whic
5、h the class discusses the results of the experiment. Complete the table of results.,Yes,Because they had water, warmth and oxygen.,No,Because it was too cold.,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
6、 seeds.,Because they didnt get any water.,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.,An experiment on plants Part1: Listen to a teacher(TH) helping her class set up an experiment. TH: O
7、K, 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,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
8、water, some boiled water and some cooking oil. Look at the instructions on the board. Lets read through them.,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 spo
9、t so by the window over there would be fine. Three: Take Dish B, wet it with tap water and put it in the fridge.,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
10、C. Six: Leave them all for a few days. OK, now you can go ahead and set up the experiment.,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?
11、Andrew? A: The seeds in Dish A have started growing but none of the others have.,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?,R: The seeds didnt get any water so they couldnt grow. TH: Yes. Now, Dish D is int
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