domingo, 17 de mayo de 2015

TECHNOLOGY: SIMPLE MACHINES

A machine is an object that helps us work.

There are two types of machines:
- Simple machines: they have one part to do the work.
- Compound machines: they have a number of simple machines.

SIMPLE MACHINES:
- Levers.
- Information.
- Mikids.
- Edheads.

VIDEO:
- The principles of levers.
- How things work: the see saw (levers).
- The way things work: pulleys.