2. We can classify machines in two
different ways:
Simple machines
A simple machine has
few or no moving
parts.
They require energy
• Complex machines
• A complex machine
is compound by
simple machines.
• They require
electrical energy.
3. There are six types of simple
machines:
PULLEY: it uses a wheel and a rope to lift
or lower an object.
INCLINED PLANE : it is an slanting
surface to connect a low level with a high
level.
4. SCREW: it is a type of inclined plane.We
use it to hold things or lift objects.
• WHEEL: It is a circular object that turns
around an axle.
5. WEDGE: it is an object with at least one
slanting edge. We use it to cut objects.
LEVER : it is a rigid bar with a support
called fulcrum.
6. Match its name with its picture
PULLEY
INCLINED PLANE
SCREW
WHEEL
WEDGE
LEVEL
7. LET´S HAVE MORE PRACTICE…
http://easyscienceforkids.com/all-about-
simple-machines/