Unit 3 The world of science Writing & Presenting ideas 课件（共24张，内嵌视频）2024-2025学年高一英语外研版（2019）必修3

(共24张PPT)
Unit 3 The world of science
Writing & Presenting ideas
Learning objectives
1. To read the instructions for the experiment and do it by yourself, write an experiment report.
2. To choose a day-to-day used object and predict its changes in 50 years.
Writing an experiment report
1 What do you think the results of this experiment will be
2 What can you learn from this experiment
Read the instructions for the experiment and answer the questions.
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Magic bottle
Materials
A boiled egg
A glass bottle (bottleneck a bit smaller than the egg)
Hot water
Read the instructions for the experiment and answer the questions.
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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
Read the instructions for the experiment and answer the questions.
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3. Shake the bottle gently.
4. Pour out the hot water.
5. Quickly put the egg on top of the bottle.
Read the instructions for the experiment and answer the questions.
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Results
Note: Do the experiment under the instructions of a teacher.
Read the instructions for the experiment and answer the questions.
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Read the instructions for the experiment and answer the questions.
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1. What do you think the results of this experiment will be
2. What can you learn from this experiment
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.
Introduce the aim of the experiment.
This experiment is designed to _____________________________________________________________________________________________________________________
show that air pressure indeed exists and it is very powerful.
Complete the boxes with the information in Activity 5. Do further research if necessary.
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Complete the boxes with the information in Activity 5. Do further research if necessary.
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Describe the materials used in the experiment and explain the procedure.
I prepared_____________________________________ to do this experiment.
Procedure : ______________________________________________________________________________________________________________________________________________________________________________
a boiled egg, a bottle, some hot water
First, remove the shell of the egg. Then, carefully pour some hot water into the bottle and shake the bottle gently. At last, pour out the water and put the egg on the top of the bottle.
Complete the boxes with the information in Activity 5. Do further research if necessary.
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Report the results and what you have learnt.
After the experiment, I can draw the conclusion that ____________________________________________
____________________________________________.
Now write a report of the experiment.
the air pressure exists, and it is the force of the air that pushed the egg into the bottle
1. 审题定调：
实验报告属于说明文体裁，其最大特点就是知识性、严谨性和科学性。它是对客观事实的阐述，措辞应真实严谨，准确恰当。
2. 确定主体内容：
实验报告需要客观地介绍实验的整个过程。可以按照实验目的——实验器具——实验方法——实验结果——得出结论的顺序依次进行说明。介绍实验步骤时，可适当使用表示顺序的词汇，使叙述条理、清楚。
How to write an experiment report
3. 确定人称、时态：
描述实验时，时态用一般现在时，人称用第三人称单数。
4. 核定表达：
★实验目的：in order to find ...; The aim of the experiment is to find ...; with the purpose of discovering ...; do research on ...
★实验器具：beaker; Bunsen burner; crucible; glass rod (玻璃棒); iron nail; test tube; tong; balance; ...
★实验方法或过程：do the experiment as follows; first(ly); second(ly); third(ly); finally; then; next; after that; two hours’ later; after several days; ...
★实验结论：From this experiment we can conclude ...; in conclusion; draw a conclusion that ...; We can learn from the experiment ...; We can find out that ...; You can see / discover ...
★原因和结果：The reason is that ...; This is because ...; result from / in; lead to; cause; ...
At the beginning of the experiment, I prepared the materials, including a boiled egg, a glass bottle whose neck is a bit smaller than the egg, and some hot water. With all the things prepared, the experiment began.
The experiment is designed to prove whether air pressure really exists.
Share your report with the class.
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Sample
First, I removed the shell of the egg. Then I carefully poured some hot water into the bottle, and shook the bottle gently. After a few minutes, I poured out the hot water. Just at the same time, l quickly placed the egg on top of the bottle. To my amazement, the egg squeezed into the bottle at once.
After the experiment, I can draw the conclusion that air pressure indeed exists, and it is very powerful. It is the force of the air that pushed the egg into the bottle.
Sample
Presenting ideas
Work in groups. Look at the pictures and discuss how these objects have changed over the years.
1
Watch the video and see how the telephone has changed over the years.
Choose one of the objects in Activity 1 or an object that you use every day. Predict how it will further change over the next 50 years.Make notes about your ideas.
2
Present your ideas to the class. Use the notes in Activity 2 and the expressions in the box to help you.
3
Radios will gradually be withdrawn from our life over the next 50 years because they will be replaced by mobile phones or other devices.
Corded telephones will disappear due to the popularity of mobile phones.
Computers will become smaller and lighter and can be used on the palm of the hand because of the development of technology.
Sample
1. After completing this unit, I can rate my performance 1 (excellent), 2(good) or 3 (in need of improvement).
talk about careers in science
tell this story behind an invention
write an experiment report
think critically about what I’ve read and heard
cultivate a spirit of innovation
2. I’ve learnt to make use of the following words and expressions:
_______________________________________________________________________________________
_______________________________________________________________________________________
3. I still need to improve:
______________________________________________________________________________________________________________________________________________________________________________