Add Papers Marked0
Paper checked off!

Marked works


Viewed works

Shopping Cart0
Paper added to shopping cart!

Shopping Cart

Register Now

internet library library
1,99 € Add to cart
Add to Wish List
Want cheaper?
ID number:879343
Published: 04.01.2004.
Language: English
Level: Secondary school
Literature: n/a
References: Not used

Once man had learned to use stone he seemed content to stick with this single method of tool making for thousands of years. Stone was plentiful, relatively easy to work with, and seemed to satisfy his needs.
Finally, around 3500 B.C. man ventured into the Age of Metal. The first metal which he learned to work was copper. This metal is extremely soft, melts easily in a simple campfire and can be worked into tools with relative ease. Copper make tools of a poor quality. Because copper is soft (have you ever tried to bend copper electrical wire?) it will not hold an edge (stay sharp) for any length of time. Copper knives could be made, but the simple act of cutting animal flesh instantly dulled the blade and it had to be reformed. …

Work pack:
GREAT DEAL buying in a pack your savings −4,48 €
Work pack Nr. 1276792
Load more similar papers


Choose Authorization Method

Email & Password

Email & Password

Wrong e-mail adress or password!
Log In

Forgot your password?


Not registered yet?

Register and redeem free papers!

To receive free papers from it is necessary to register. It's quick and will only take a few seconds.

If you have already registered, simply to access the free content.

Cancel Register