There are six simple machines. They make it easier for us to do work. The lever is one kind of simple machine. A lever is a bar that balances on a point. The point is called the fulcrum. You can move the fulcrum to make work easier. A crowbar is a lever. It helps to pry things apart. A see-saw is also a kind of lever. It is a board that balances on a point. The fulcrum is on the middle of the board. This makes it easy to balance and move back and .....