6 simple machines
Lever: A lever is a stiff bar that rest on a fulcrum which lifts or moves loads.
Wedge: A wedge is a object with at least one diagonal side ending in a pointy edge, which cuts material.
Wheel&Axle: A wheel with a bar, called an axle through the center lifts or moves loads.
Inclined Plane: An inclined plane is a diagonal surface connecting a lower level to a higher level.
Screw: A screw is another form of an inclined plane that's wrapped around a bar which holds things together or lifts materials.