❤I've been used to reserving myself. Only by doing this won't I get hurt when I'm leaving.❤
❤No matter what have happened and whether you are ready or not, every next moment is gonna be a brand new start.❤
❤Whatever you do, remember that you do it for yourself, then you will not complain.❤
❤If you get tired one day, you will see my smile as long as you turn around.❤

Sunday, 30 October 2011

Unit 5 Materials - Lesson 4

Lesson 4 Fantastic Materials




Different types of materials allow different amount of light to pass through.





  •  A transparent material allows light to pass through. 












  • A translucent material allows some light to pass through. 



  • An opaque material does not allow any light to pass through. 








Quick Check :
Do you think it is a good idea to live in a glass house?
Discuss it with your friends. 

发贴者 AnGeL 时间： 13:24
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