6 simple machines
These are some machines that the Egyptians used
Wheel and Axel
A larger wheel rotates around a smaller wheel, called the axle.
The larger the outer wheel is in comparison to the inner axle, the more efficient the wheel and axle is.
A screw is an inclined plane (a sloping or slanting surface) that is wrapped around a cylinder to form spiraling ridges. Screws look like spiral staircases. A common example of a screw is a wood screw. As this screw rotates, it moves into the wood a certain distance. This distance depends on the screw's pitch (the distance between the ridges winding around the screw). Each colored band on the paper around the pencil represents a spiral ridge on a screw, which is called a thread. Screws with less distance between the threads are easier to turn.
A plane set at an angle to the horizontal, especially a simple machine used to raise or lower a load by rolling or sliding.