1. Joseph vela Jose sierra
Alexander graham bell
Joseph vela
Jose sierra

2. Why is he important
In 1876, at the age of 29, alexander graham bell invented his telephone
When he was eleven, Bell invented a machine that could clean wheat. He later said that if he had understood electricity at all, he would have been too discouraged to invent the telephone. Everyone else "knew" it was impossible to send voice signals over a wire. 

3. History of Alexander
In 1877, he formed the Bell Telephone Company, and in the same year married Mabel Hubbard and embarked on a yearlong honeymoon in Europe.
in 1881, he used the $10,000 award for winning France's Volta Prize to set up the Volta Laboratory in Washington, D.C.

4. Why is he important to us
He is important cause he invented the telephone for our communication.

5. Why is their contributions significan to science?
Cause he made a way to communicate from one place to another without going there.

6. Born and death
Alexander Graham Bell was born on March 3,1849. Alexander Graham bell was a Scottish inventor who was know for his invention the telephone .He is married to Mabel Hubbard in 1877.He died August 2,1992. If he died in 1847 he would be 77 years old when he died so he died at the age of 75 so the year would be 1849.