- The most important and useful invention of Thomas Alva Edison was the electric bulb.
- He worked for nearly two years to invent the first electric bulb.
- He spent about 40,000 dollars to find out the best material for making the filament.
- He tried many kinds of material for the filament.
- He was able to produce the first electric bulb in 1879.
- Three years after 1879, many homes in New York had electric lights.
- Edison worked hard till the very end of his life to make the world a happier place to live in.
- He improved telegraphy, Bell's telephone, and the Remington typewriter.
- He invented the electric fan.
- In 1913, he produced the first "talkie" or talking picture.
- Before his death in 1931, he had produced or improved about a thousand things.
- When he died, the electric lights were turned off for a while in many American homes as a mark of respect for him.
Parent Tip: Review the logic above to help your child master the concept of 6th grade reading comprehension worksheet online.
