Simple Machine

By: Michelle P 


Simple Machines 

Compound Machines


Billy Cart

My report about Piano

Piano was a type of simple machine. It was lever. The lever was the piano keys. Levers help you move the items that are heavy. Piano was a very popular instrument. Most people used piano for their performances.

Bartolomeo Cristofori invented the piano. It was invented by Bartolomeo Cristofori around 1720 in Padua, Italy.

The word piano came from pianoforte. Most of the width of the piano was 150 centimeter. Piano is mostly used in western music. I think piano was an interesting intrument because of the way it works. It was very unique.