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(共13张PPT)
Unit 7
How do things change
Unit 7
How do things change
第3课时 Communicate & Extend
A
Listen and number. Then say.
1
4
3
2
This/These thing(s)
can change. ...
Let’s say
What things around you can change
B
Make and say.
C
Think and write.
Think and say
Extend
Everything in our world is a solid, liquid or gas.
Ice and metal are solids.
Water and milk are liquids.
Air and steam are gases.
But things change.
Listen and read
The ice is a solid.
Now it’s melting.
It’s changing into a liquid.
The water is a liquid.
Now it’s freezing. It’s changing into a solid.
The water is a liquid.
Now it’s boiling. It’s changing into a gas.
Watch and repeat
When does water change into a gas
When does it change into a solid
Summary
Shall we make a strawberry ice drink Let’s put some strawberries, ice and water together.
Sentences:
Homework
用英语向父母讲讲水的三种状态的变化过程。
听录音，熟读Extend部分的内容。
复习本单元所学词汇、句型及课文。

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