Fifth grade students at Munsey Park School in Manhasset are beginning their simple machines unit. Students learned about the different parts of a lever—lever arm, fulcrum, load and effort force. After ...

Find out more about the wheel and axel, the lever, and the wedge. Find out more about three of the six simple machines: the wheel and axel, the wedge, the lever. Simple machines like these help us do ...

Explains how pulleys work to lift heavy weights more easily. A fixed pulley changes the direction of force, allowing for easier lifting, while a movable pulley reduces the amount of force needed to ...