外研版（2019）必修第三册Unit3The world of science Presenting Ideas Writing课件(17张ppt)

(共17张PPT)
Unit 3
The world of science
Read the instructions for the experiment and answer the questions.
Magic bottle
Writing an experiment report
Materials
A boiled egg
A glass bottle (bottleneck a bit smaller than the egg)
Hot water
Procedure
Remove the shell of the egg.
2. Carefully pour some hot water into the bottle.
the correct or usual way of doing sth. 步骤，程序
3. Shake（摇晃） the bottle gently.
4. Pour out（倾倒） the hot water.
5. Quickly put the egg on top of the bottle.
Results
What will happen
1. What do you think the result of this experiment will be
2. What does the experiment prove
The egg will squeeze（挤压） into the bottle.
Phenomenon and result
The experiment
1. What do you think the result of this experiment will be
2. What does the experiment prove
The egg will squeeze into the bottle.
The experiment shows us the effects of air pressure. Air pressure indeed exists, and it is very powerful.
Complete the boxes with the information in Activity 5. Do further research if necessary.
Introduce the aim of the experiment.
1. This experiment is designed to prove whether...
__________________________________________________________________________________________________________________________________________________________________
________________________________________________
Introduction
2. In order to find out if ..., we carry out an experiment.
3. With the purpose of discovering whether ..., we...
4. We carry out an experiment to find out if ...
Describe the materials used in the experiment and explain the procedure.
I prepared_____________________________________ to do this experiment.
Procedure : ________________________________________________________________________________________________________________________________________________________________________________________
Main body
a boiled egg, a bottle, some hot water
1. Firstly ... Secondly ... Thirdly ... Finally ...
2. First ... Then ... Next ... After that ...
phenominon:
The egg...
Report the results and what you have learnt.
1. After the experiment, I can draw the conclusion that… ____________________________________________
____________________________________________.
Conclusion
Now write a report of the experiment.
2. We can conclude from this experiment that ...
The reason is that ...
reason:
In order to find out if ..., we carry out an experiment.
I prepared_____________________________________ to do this experiment.
___________________________________________________________________________________________________________________________________________________
We can draw the conclusion that_______________
The reason is that___________________________________
Firstly ...
Then ...
Finally ..., the egg...
The essay
主体内容
实验报告需要客观地介绍实验的整个过程。。
常用表达
★描写实验目的：
in order to find out if ... do research on ...
in the hope of ... with the purpose of discovering ...
carry out an experiment to find out if ...
The aim of the experiment is to find out if ...
★实验器具：
Bunsen burner, crucible, iron nail, test tube, tongs, balance, empty bottle, match, iron wire, oxygen bottle ...
★描写实验的方法或过程：
add ... to ... pour ... into ...
do the experiment as follows ...
Firstly ... Secondly ... Thirdly ... Finally ...
First ... Then ... Next ... After that ...
two hours' later after several days
find a better way of doing ... be under observation
make a good study of ...
★描写实验结论：
in conclusion
draw / come to the conclusion that ...
We can conclude from this experiment that ...
We can learn from the experiment that ...
We can find out that ...
You can see / discover ...
★描写原因和结果：
The reason is that ...
This is because ...