This week in technology I learned about simple machines. A simple machine is a mechanical device that changes the direction of magnitude of a force. Usually  The term refers to the six classic simple machines. These simple machines include the  inclined plane, wedge, wheel and axe, pulley, and screw. Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines are used in daily life all the time even if you don’t know it. Blinds, flag poles, garage doors, hammers, sea saws, scissors, knifes, axes, bikes, office chairs, wheel chair ramps, slides light bulbs, and bottle caps are all simple machines.