Machines make work easier.
This is a simple machine.A lever
Machines make work easier.
This is a simple machine.A pulley.
Machines make work easier.
This is a simple machine.Inclined plane.
Machines make work easier.
This is a simple machine.Screw.
Machines make work easier.
This is a simple machine.Wheels and axle.
Machines make work easier.
This is a simple machine.Wedge.
Simple machines have 1,2,3 or 4 pieces.