内容正文:
Unit 5 Water
Period 4 Writing
牛津深圳·广州版 七年级下
Write a short passage about an experiment.
Describe the process of water circulation using a flowchart.
Use flow charts to describe the development process of things correctly.
Learning objects
After learning this lesson, you can:
What is used in these experiment?
Lead in
I also want to do an experiment with salt. So, this is my experiment. Can you help me mark down the process of it?
Pre-writing
Jack
Pre-writing
You can mark down the notes about these facts.
An
experiment
Things to use
Steps to follow
Result to find
Look at the pictures carefully, and answer the questions.
What is used in the experiment?
How many steps are there in the experiment?
What does the boy do in each step?
What result can the boy get?
Pre-writing
Pre-writing
How many steps are there in my experiment?
Step 1
Step 2
Step 3
Step 4
Pre-writing
Pre-writing
In groups, you can discuss what is used in my experiment.
stir v. 搅拌
a cup holder
a spirit lamp
8
Jack is adding some salt to the glass.
Jack is stirring the water. Then the salt disappears.
add salt to
Pre-writing
What do I do in each step? Can you help me use a sentence to describe each picture?
stir /stɜː(r)/
v. 搅拌
Jack is heating the water.
Jack is so happy because the water starts to dry up.
干涸
Pre-writing
heat
dry up
Pre-writing
salt
crystal
turn into
What result can I get?
Finally, …(start to dry up)
Heat the water. (a white cloud, be made up of,
small drops of, continue)
Stir the water. (disappear, become part of)
Add some salt to a glass of water.
A flow chart
Writing
continue /kənˈtɪnjuː/ v.
to keep doing sth without stopping
How to write an experiment?
1. 多用无主语的祈使句。
2. 常用表示时间先后顺序的序数词或时间副词。
Add some salt to… Heat the water.
First, … Second, …
Then, … Finally, …
Summary
Writing
B Write a short paragraph about this experiment. Use the flow chart to help you.
First, add some salt to a glass of water. ___________________