❤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.❤

Saturday, 5 November 2011

Unit 5 Materials - Lesson 7

Lesson 7 Natural And Man-Made Materials

Observe the materials around you. These materials are either natural materials or man-made materials. Natural materials are found in nature. Man-made materials are made by man.

  •  An eraser is made of rubber. Rubber and silk are natural materials. Do you know why?

  • Plastic and synthetic cloth are man-made materials. Do you know why?

  • Petroleum is a natural material. We can use petroleum to make plastic. This shows that we can use natural materials to make man-made materials. 

No comments:

Post a Comment