Choosing the correct material for any particular task is essential for a manufacturing activity.
Materials are divided into:
Raw materials ( natural and artificial ) and
Processed materials ( artificial materials )


Natural materials such as wood or stone exist in nature and we use them as they are. Example of these materials are wood, stone, sand, wool etc
Natural resources are split into 3 categories:

•Animal

•Vegetable

•Mineral

MATERIALES EN INGLES

Realiza los siguientes ejercicios que vienen en el enlace:

http://www.petervaldivia.com/technology/index.php
http://www.petervaldivia.com/eso/materials-and-wood/index.php